{"id":"CVE-2026-58216","aliases":["AZL-94169","DEBIAN-CVE-2026-58216","EUVD-2026-51177","GHSA-vc9h-gm8g-6j4x","OESA-2026-3295","OESA-2026-3296","OESA-2026-3297","OESA-2026-3366","OESA-2026-3367","SUSE-SU-2026:22977-1","SUSE-SU-2026:23003-1","SUSE-SU-2026:23129-1","SUSE-SU-2026:23152-1","SUSE-SU-2026:3362-1","SUSE-SU-2026:3363-1","SUSE-SU-2026:3364-1","SUSE-SU-2026:3365-1","SUSE-SU-2026:3366-1","SUSE-SU-2026:3367-1","UBUNTU-CVE-2026-58216","openSUSE-SU-2026:11431-1","openSUSE-SU-2026:21475-1","openSUSE-SU-2026:21540-1"],"status":"published","title":"Samba: kpasswd service: kpasswd packet that contains malformed asn.1 might cause the server to access 6 bytes of unallocated memory leading server to crash","description":"An out-of-bounds read flaw was found in Samba's Kerberos Key Distribution Center's (KDC) password change (kpasswd) service. When processing malformed ASN.1-encoded Kerberos password change request, Samba server miscalculates the structure size and attempts to read up to six bytes beyond the end of the allocated buffer. While this out-of-bounds read typically results in a harmless decryption failure, if the read hits unmapped memory, it causes the KDC process to crash. An authenticated attacker can send a specially crafted kpasswd request containing malformed ASN.1 data to trigger the out-of-bounds read, which may cause the KDC process to terminate, resulting in a denial of service.","severity":{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00464,"percentile":0.40508,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-125"],"published":"2026-07-28T10:00:00Z","modified":"2026-11-05T05:36:30Z","fixes":[{"ecosystem":"Debian:13","package":"samba","fixed_in":["2:4.22.10+dfsg-0+deb13u2"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"samba","fixed_in":["2:4.24.5+dfsg-1"],"sources":["osv"]},{"ecosystem":"Ubuntu:22.04:LTS","package":"samba","fixed_in":["2:4.15.13+dfsg-0ubuntu1.13"],"sources":["osv"]},{"ecosystem":"Ubuntu:24.04:LTS","package":"samba","fixed_in":["2:4.19.5+dfsg-4ubuntu9.7"],"sources":["osv"]},{"ecosystem":"Ubuntu:26.04:LTS","package":"samba","fixed_in":["2:4.23.6+dfsg-1ubuntu2.2"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Azure 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4"}],"references":[{"url":"https://access.redhat.com/security/cve/CVE-2026-58216","tags":["vdb-entry","x_refsource_REDHAT"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2502721","tags":["issue-tracking","x_refsource_REDHAT"]},{"url":"https://bugzilla.samba.org/show_bug.cgi?id=16087"},{"url":"https://www.samba.org/samba/security/CVE-2026-58216.html"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-58216","tags":["web","advisory"]},{"url":"https://github.com/advisories/GHSA-vc9h-gm8g-6j4x"},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-58216","tags":["advisory"]},{"url":"https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-3295","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-58218","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-58221","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-58222","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-58224","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-6949","tags":["advisory"]},{"url":"https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-3296","tags":["advisory"]},{"url":"https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-3297","tags":["advisory"]},{"url":"https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-3366","tags":["advisory"]},{"url":"https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-3367","tags":["advisory"]},{"url":"https://www.suse.com/support/update/announcement/2026/suse-su-202622977-1/","tags":["advisory"]},{"url":"https://bugzilla.suse.com/1271469","tags":["report"]},{"url":"https://bugzilla.suse.com/1271672","tags":["report"]},{"url":"https://bugzilla.suse.com/1271673","tags":["report"]},{"url":"https://bugzilla.suse.com/1271674","tags":["report"]},{"url":"https://bugzilla.suse.com/1271675","tags":["report"]},{"url":"https://bugzilla.suse.com/1271676","tags":["report"]},{"url":"https://bugzilla.suse.com/1271677","tags":["report"]},{"url":"https://www.suse.com/security/cve/CVE-2026-15779","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-58216","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-58218","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-58221","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-58222","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-58224","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-6949","tags":["web"]},{"url":"https://www.suse.com/support/update/announcement/2026/suse-su-202623003-1/","tags":["advisory"]},{"url":"https://bugzilla.suse.com/1261158","tags":["report"]},{"url":"https://bugzilla.suse.com/1261159","tags":["report"]},{"url":"https://bugzilla.suse.com/1261160","tags":["report"]},{"url":"https://bugzilla.suse.com/1261161","tags":["report"]},{"url":"https://bugzilla.suse.com/1261163","tags":["report"]},{"url":"https://bugzilla.suse.com/1261188","tags":["report"]},{"url":"https://bugzilla.suse.com/1273189","tags":["report"]},{"url":"https://www.suse.com/security/cve/CVE-2026-1933","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-2340","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-3012","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-3238","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-4408","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-4480","tags":["web"]},{"url":"https://www.suse.com/support/update/announcement/2026/suse-su-202623129-1/","tags":["advisory"]},{"url":"https://www.suse.com/support/update/announcement/2026/suse-su-202623152-1/","tags":["advisory"]},{"url":"https://www.suse.com/support/update/announcement/2026/suse-su-20263362-1/","tags":["advisory"]},{"url":"https://www.suse.com/support/update/announcement/2026/suse-su-20263363-1/","tags":["advisory"]},{"url":"https://www.suse.com/support/update/announcement/2026/suse-su-20263364-1/","tags":["advisory"]},{"url":"https://www.suse.com/support/update/announcement/2026/suse-su-20263365-1/","tags":["advisory"]},{"url":"https://www.suse.com/support/update/announcement/2026/suse-su-20263366-1/","tags":["advisory"]},{"url":"https://www.suse.com/support/update/announcement/2026/suse-su-20263367-1/","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2026-58216","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-58216","tags":["report"]},{"url":"https://ubuntu.com/security/notices/USN-8621-1","tags":["advisory"]},{"url":"","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2026-58216","title":"Samba: kpasswd service: kpasswd packet that contains malformed asn.1 might cause the server to access 6 bytes of unallocated memory leading server to crash","description":"An out-of-bounds read flaw was found in Samba's Kerberos Key Distribution Center's (KDC) password change (kpasswd) service. When processing malformed ASN.1-encoded Kerberos password change request, Samba server miscalculates the structure size and attempts to read up to six bytes beyond the end of the allocated buffer. While this out-of-bounds read typically results in a harmless decryption failure, if the read hits unmapped memory, it causes the KDC process to crash. An authenticated attacker can send a specially crafted kpasswd request containing malformed ASN.1 data to trigger the out-of-bounds read, which may cause the KDC process to terminate, resulting in a denial of service.","status":"published","published":"2026-07-30T15:40:11.673Z","modified":"2026-07-31T22:57:42.253Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"cna"}],"cwes":["CWE-125"],"updated_at":"2026-11-02T13:47:39.876248Z"}],"euvd":[{"id":"EUVD-2026-51177","description":"An out-of-bounds read flaw was found in Samba's Kerberos Key Distribution Center's (KDC) password change (kpasswd) service. When processing malformed ASN.1-encoded Kerberos password change request, Samba server miscalculates the structure size and attempts to read up to six bytes beyond the end of the allocated buffer. While this out-of-bounds read typically results in a harmless decryption failure, if the read hits unmapped memory, it causes the KDC process to crash. An authenticated attacker can send a specially crafted kpasswd request containing malformed ASN.1 data to trigger the out-of-bounds read, which may cause the KDC process to terminate, resulting in a denial of service.","status":"published","published":"2026-07-30T15:40:11Z","modified":"2026-07-31T22:57:42Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T18:02:25.159179Z"}],"ghsa":[{"id":"GHSA-vc9h-gm8g-6j4x","title":"An out-of-bounds read flaw was found in Samba's Kerberos Key Distribution Center's (KDC) password...","description":"An out-of-bounds read flaw was found in Samba's Kerberos Key Distribution Center's (KDC) password change (kpasswd) service. When processing malformed ASN.1-encoded Kerberos password change request, Samba server miscalculates the structure size and attempts to read up to six bytes beyond the end of the allocated buffer. While this out-of-bounds read typically results in a harmless decryption failure, if the read hits unmapped memory, it causes the KDC process to crash. An authenticated attacker can send a specially crafted kpasswd request containing malformed ASN.1 data to trigger the out-of-bounds read, which may cause the KDC process to terminate, resulting in a denial of service.","status":"published","published":"2026-07-30T18:31:39Z","modified":"2026-07-30T18:31:47Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"cwes":["CWE-125"],"updated_at":"2026-11-02T15:09:57.873597Z"}],"nvd":[{"id":"CVE-2026-58216","description":"An out-of-bounds read flaw was found in Samba's Kerberos Key Distribution Center's (KDC) password change (kpasswd) service. When processing malformed ASN.1-encoded Kerberos password change request, Samba server miscalculates the structure size and attempts to read up to six bytes beyond the end of the allocated buffer. While this out-of-bounds read typically results in a harmless decryption failure, if the read hits unmapped memory, it causes the KDC process to crash. An authenticated attacker can send a specially crafted kpasswd request containing malformed ASN.1 data to trigger the out-of-bounds read, which may cause the KDC process to terminate, resulting in a denial of service.","status":"published","published":"2026-07-30T16:17:14.767Z","modified":"2026-07-31T23:17:25.703Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"secondary"}],"cwes":["CWE-125"],"updated_at":"2026-11-02T14:12:33.955581Z"}],"osv":[{"id":"DEBIAN-CVE-2026-58216","description":"An out-of-bounds read flaw was found in Samba's Kerberos Key Distribution Center's (KDC) password change (kpasswd) service. When processing malformed ASN.1-encoded Kerberos password change request, Samba server miscalculates the structure size and attempts to read up to six bytes beyond the end of the allocated buffer. While this out-of-bounds read typically results in a harmless decryption failure, if the read hits unmapped memory, it causes the KDC process to crash. An authenticated attacker can send a specially crafted kpasswd request containing malformed ASN.1 data to trigger the out-of-bounds read, which may cause the KDC process to terminate, resulting in a denial of service.","status":"published","published":"2026-07-30T16:17:14.767Z","modified":"2026-10-01T03:03:27.864906573Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T15:45:57.590991Z"},{"id":"OESA-2026-3295","title":"samba security update","description":"Samba is a suite of programs for Linux and Unix to interoperate with Windows.\r\n\r\nSecurity Fix(es):\n\nAn out-of-bounds read flaw was found in Samba\u0026apos;s Kerberos Key Distribution Center\u0026apos;s (KDC) password change (kpasswd) service. When processing malformed ASN.1-encoded Kerberos password change request, Samba server miscalculates the structure size and attempts to read up to six bytes beyond the end of the allocated buffer. While this out-of-bounds read typically results in a harmless decryption failure, if the read hits unmapped memory, it causes the KDC process to crash. An authenticated attacker can send a specially crafted kpasswd request containing malformed ASN.1 data to trigger the out-of-bounds read, which may cause the KDC process to terminate, resulting in a denial of service.(CVE-2026-58216)\n\nA flaw was found in Samba\u0026apos;s internal DNS server where unauthenticated TKEY registration requests were added to the TKEY name cache before being rejected. A remote, unauthenticated attacker can exploit this behavior by sending a large number of TKEY requests with arbitrary names, exhausting the cache and evicting legitimate TKEY entries. This can prevent legitimate TSIG authentication for signed DNS queries, resulting in a denial of service.(CVE-2026-58218)\n\nSamba is an open-source implementation of file sharing and printing services for communication between Linux/Unix and Windows systems. CVE-2026-58221 is a security vulnerability in Samba affecting versions before 4.22.10.(CVE-2026-58221)\n\nA security flaw combining LDAP filter injection and improper authorization checks was found in Samba Active Directory Domain Controller (AD DC). When processing LDAP Compare requests, Samba fails to properly validate user-supplied attribute names and executes the resulting internal database search in a trusted context, bypassing normal Access Control List (ACL) enforcement. An authenticated low-privilege domain user can exploit these flaws to disclose confidential Active Directory attributes that would normally be inaccessible. The disclosed information may be leveraged to derive sensitive authentication material, potentially leading to privilege escalation and complete domain compromise. For example: In deployments configured with Group Managed Service Accounts (gMSAs), an attacker can extract the \u0026quot;msKds-RootKeyData\u0026quot; attribute and derive gMSA passwords offline, potentially leading to complete domain compromise if privileged gMSAs are present.(CVE-2026-58222)\n\nAn undisclosed vulnerability exists in Samba affecting versions before 4.22.10.(CVE-2026-58224)\n\nA security vulnerability exists in Samba affecting versions before 4.22.10. The specific vulnerability details have not been publicly disclosed.(CVE-2026-6949)","status":"published","published":"2026-08-07T02:44:41Z","modified":"2026-08-07T03:00:55.659600168Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:52:46.823443Z"},{"id":"OESA-2026-3296","title":"samba security update","description":"Samba is a suite of programs for Linux and Unix to interoperate with Windows.\r\n\r\nSecurity Fix(es):\n\nAn out-of-bounds read flaw was found in Samba\u0026apos;s Kerberos Key Distribution Center\u0026apos;s (KDC) password change (kpasswd) service. When processing malformed ASN.1-encoded Kerberos password change request, Samba server miscalculates the structure size and attempts to read up to six bytes beyond the end of the allocated buffer. While this out-of-bounds read typically results in a harmless decryption failure, if the read hits unmapped memory, it causes the KDC process to crash. An authenticated attacker can send a specially crafted kpasswd request containing malformed ASN.1 data to trigger the out-of-bounds read, which may cause the KDC process to terminate, resulting in a denial of service.(CVE-2026-58216)\n\nA flaw was found in Samba\u0026apos;s internal DNS server where unauthenticated TKEY registration requests were added to the TKEY name cache before being rejected. A remote, unauthenticated attacker can exploit this behavior by sending a large number of TKEY requests with arbitrary names, exhausting the cache and evicting legitimate TKEY entries. This can prevent legitimate TSIG authentication for signed DNS queries, resulting in a denial of service.(CVE-2026-58218)\n\nSamba is an open-source implementation of file sharing and printing services for communication between Linux/Unix and Windows systems. CVE-2026-58221 is a security vulnerability in Samba affecting versions before 4.22.10.(CVE-2026-58221)\n\nA security flaw combining LDAP filter injection and improper authorization checks was found in Samba Active Directory Domain Controller (AD DC). When processing LDAP Compare requests, Samba fails to properly validate user-supplied attribute names and executes the resulting internal database search in a trusted context, bypassing normal Access Control List (ACL) enforcement. An authenticated low-privilege domain user can exploit these flaws to disclose confidential Active Directory attributes that would normally be inaccessible. The disclosed information may be leveraged to derive sensitive authentication material, potentially leading to privilege escalation and complete domain compromise. For example: In deployments configured with Group Managed Service Accounts (gMSAs), an attacker can extract the \u0026quot;msKds-RootKeyData\u0026quot; attribute and derive gMSA passwords offline, potentially leading to complete domain compromise if privileged gMSAs are present.(CVE-2026-58222)\n\nAn undisclosed vulnerability exists in Samba affecting versions before 4.22.10.(CVE-2026-58224)\n\nA security vulnerability exists in Samba affecting versions before 4.22.10. The specific vulnerability details have not been publicly disclosed.(CVE-2026-6949)","status":"published","published":"2026-08-07T02:44:45Z","modified":"2026-08-07T03:00:56.989975783Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:52:46.823443Z"},{"id":"OESA-2026-3297","title":"samba security update","description":"Samba is a suite of programs for Linux and Unix to interoperate with Windows.\r\n\r\nSecurity Fix(es):\n\nAn out-of-bounds read flaw was found in Samba\u0026apos;s Kerberos Key Distribution Center\u0026apos;s (KDC) password change (kpasswd) service. When processing malformed ASN.1-encoded Kerberos password change request, Samba server miscalculates the structure size and attempts to read up to six bytes beyond the end of the allocated buffer. While this out-of-bounds read typically results in a harmless decryption failure, if the read hits unmapped memory, it causes the KDC process to crash. An authenticated attacker can send a specially crafted kpasswd request containing malformed ASN.1 data to trigger the out-of-bounds read, which may cause the KDC process to terminate, resulting in a denial of service.(CVE-2026-58216)\n\nA flaw was found in Samba\u0026apos;s internal DNS server where unauthenticated TKEY registration requests were added to the TKEY name cache before being rejected. A remote, unauthenticated attacker can exploit this behavior by sending a large number of TKEY requests with arbitrary names, exhausting the cache and evicting legitimate TKEY entries. This can prevent legitimate TSIG authentication for signed DNS queries, resulting in a denial of service.(CVE-2026-58218)\n\nSamba is an open-source implementation of file sharing and printing services for communication between Linux/Unix and Windows systems. CVE-2026-58221 is a security vulnerability in Samba affecting versions before 4.22.10.(CVE-2026-58221)\n\nA security flaw combining LDAP filter injection and improper authorization checks was found in Samba Active Directory Domain Controller (AD DC). When processing LDAP Compare requests, Samba fails to properly validate user-supplied attribute names and executes the resulting internal database search in a trusted context, bypassing normal Access Control List (ACL) enforcement. An authenticated low-privilege domain user can exploit these flaws to disclose confidential Active Directory attributes that would normally be inaccessible. The disclosed information may be leveraged to derive sensitive authentication material, potentially leading to privilege escalation and complete domain compromise. For example: In deployments configured with Group Managed Service Accounts (gMSAs), an attacker can extract the \u0026quot;msKds-RootKeyData\u0026quot; attribute and derive gMSA passwords offline, potentially leading to complete domain compromise if privileged gMSAs are present.(CVE-2026-58222)\n\nAn undisclosed vulnerability exists in Samba affecting versions before 4.22.10.(CVE-2026-58224)\n\nA security vulnerability exists in Samba affecting versions before 4.22.10. The specific vulnerability details have not been publicly disclosed.(CVE-2026-6949)","status":"published","published":"2026-08-07T02:44:48Z","modified":"2026-08-07T03:00:55.378988052Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:52:46.823443Z"},{"id":"OESA-2026-3366","title":"samba security update","description":"Samba is a suite of programs for Linux and Unix to interoperate with Windows.\r\n\r\nSecurity Fix(es):\n\nAn out-of-bounds read flaw was found in Samba\u0026apos;s Kerberos Key Distribution Center\u0026apos;s (KDC) password change (kpasswd) service. When processing malformed ASN.1-encoded Kerberos password change request, Samba server miscalculates the structure size and attempts to read up to six bytes beyond the end of the allocated buffer. While this out-of-bounds read typically results in a harmless decryption failure, if the read hits unmapped memory, it causes the KDC process to crash. An authenticated attacker can send a specially crafted kpasswd request containing malformed ASN.1 data to trigger the out-of-bounds read, which may cause the KDC process to terminate, resulting in a denial of service.(CVE-2026-58216)\n\nA flaw was found in Samba\u0026apos;s internal DNS server where unauthenticated TKEY registration requests were added to the TKEY name cache before being rejected. A remote, unauthenticated attacker can exploit this behavior by sending a large number of TKEY requests with arbitrary names, exhausting the cache and evicting legitimate TKEY entries. This can prevent legitimate TSIG authentication for signed DNS queries, resulting in a denial of service.(CVE-2026-58218)\n\nSamba is an open-source implementation of file sharing and printing services for communication between Linux/Unix and Windows systems. CVE-2026-58221 is a security vulnerability in Samba affecting versions before 4.22.10.(CVE-2026-58221)\n\nA security flaw combining LDAP filter injection and improper authorization checks was found in Samba Active Directory Domain Controller (AD DC). When processing LDAP Compare requests, Samba fails to properly validate user-supplied attribute names and executes the resulting internal database search in a trusted context, bypassing normal Access Control List (ACL) enforcement. An authenticated low-privilege domain user can exploit these flaws to disclose confidential Active Directory attributes that would normally be inaccessible. The disclosed information may be leveraged to derive sensitive authentication material, potentially leading to privilege escalation and complete domain compromise. For example: In deployments configured with Group Managed Service Accounts (gMSAs), an attacker can extract the \u0026quot;msKds-RootKeyData\u0026quot; attribute and derive gMSA passwords offline, potentially leading to complete domain compromise if privileged gMSAs are present.(CVE-2026-58222)\n\nAn undisclosed vulnerability exists in Samba affecting versions before 4.22.10.(CVE-2026-58224)\n\nA security vulnerability exists in Samba affecting versions before 4.22.10. The specific vulnerability details have not been publicly disclosed.(CVE-2026-6949)","status":"published","published":"2026-08-13T14:01:42Z","modified":"2026-08-16T01:45:19.132851698Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:52:47.217107Z"},{"id":"OESA-2026-3367","title":"samba security update","description":"Samba is a suite of programs for Linux and Unix to interoperate with Windows.\r\n\r\nSecurity Fix(es):\n\nAn out-of-bounds read flaw was found in Samba\u0026apos;s Kerberos Key Distribution Center\u0026apos;s (KDC) password change (kpasswd) service. When processing malformed ASN.1-encoded Kerberos password change request, Samba server miscalculates the structure size and attempts to read up to six bytes beyond the end of the allocated buffer. While this out-of-bounds read typically results in a harmless decryption failure, if the read hits unmapped memory, it causes the KDC process to crash. An authenticated attacker can send a specially crafted kpasswd request containing malformed ASN.1 data to trigger the out-of-bounds read, which may cause the KDC process to terminate, resulting in a denial of service.(CVE-2026-58216)\n\nA flaw was found in Samba\u0026apos;s internal DNS server where unauthenticated TKEY registration requests were added to the TKEY name cache before being rejected. A remote, unauthenticated attacker can exploit this behavior by sending a large number of TKEY requests with arbitrary names, exhausting the cache and evicting legitimate TKEY entries. This can prevent legitimate TSIG authentication for signed DNS queries, resulting in a denial of service.(CVE-2026-58218)\n\nSamba is an open-source implementation of file sharing and printing services for communication between Linux/Unix and Windows systems. CVE-2026-58221 is a security vulnerability in Samba affecting versions before 4.22.10.(CVE-2026-58221)\n\nA security flaw combining LDAP filter injection and improper authorization checks was found in Samba Active Directory Domain Controller (AD DC). When processing LDAP Compare requests, Samba fails to properly validate user-supplied attribute names and executes the resulting internal database search in a trusted context, bypassing normal Access Control List (ACL) enforcement. An authenticated low-privilege domain user can exploit these flaws to disclose confidential Active Directory attributes that would normally be inaccessible. The disclosed information may be leveraged to derive sensitive authentication material, potentially leading to privilege escalation and complete domain compromise. For example: In deployments configured with Group Managed Service Accounts (gMSAs), an attacker can extract the \u0026quot;msKds-RootKeyData\u0026quot; attribute and derive gMSA passwords offline, potentially leading to complete domain compromise if privileged gMSAs are present.(CVE-2026-58222)\n\nAn undisclosed vulnerability exists in Samba affecting versions before 4.22.10.(CVE-2026-58224)\n\nA security vulnerability exists in Samba affecting versions before 4.22.10. The specific vulnerability details have not been publicly disclosed.(CVE-2026-6949)","status":"published","published":"2026-08-13T14:01:48Z","modified":"2026-08-16T01:45:18.982561709Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:52:47.217107Z"},{"id":"UBUNTU-CVE-2026-58216","description":"An out-of-bounds read flaw was found in Samba's Kerberos Key Distribution Center's (KDC) password change (kpasswd) service. When processing malformed ASN.1-encoded Kerberos password change request, Samba server miscalculates the structure size and attempts to read up to six bytes beyond the end of the allocated buffer. While this out-of-bounds read typically results in a harmless decryption failure, if the read hits unmapped memory, it causes the KDC process to crash. An authenticated attacker can send a specially crafted kpasswd request containing malformed ASN.1 data to trigger the out-of-bounds read, which may cause the KDC process to terminate, resulting in a denial of service.","status":"published","published":"2026-07-28T10:00:00Z","modified":"2026-08-06T03:10:22.013764779Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T16:56:41.911783Z"},{"id":"AZL-94169","title":"CVE-2026-58216 affecting package samba 4.18.3-2","description":"An out-of-bounds read flaw was found in Samba's Kerberos Key Distribution Center's (KDC) password change (kpasswd) service. When processing malformed ASN.1-encoded Kerberos password change request, Samba server miscalculates the structure size and attempts to read up to six bytes beyond the end of the allocated buffer. While this out-of-bounds read typically results in a harmless decryption failure, if the read hits unmapped memory, it causes the KDC process to crash. An authenticated attacker can send a specially crafted kpasswd request containing malformed ASN.1 data to trigger the out-of-bounds read, which may cause the KDC process to terminate, resulting in a denial of service.","status":"published","published":"2026-07-30T16:17:14Z","modified":"2026-11-05T05:36:30Z","updated_at":"2026-11-05T16:41:25.880689Z"},{"id":"openSUSE-SU-2026:11431-1","title":"ctdb-4.24.5+git.481.dba78dbdea-1.1 on GA media","description":"These are all security issues fixed in the ctdb-4.24.5+git.481.dba78dbdea-1.1 package on the GA media of openSUSE Tumbleweed.","status":"published","published":"2026-08-01T00:00:00Z","modified":"2026-08-02T11:45:07.974530291Z","updated_at":"2026-11-02T16:58:39.516824Z"},{"id":"openSUSE-SU-2026:21475-1","title":"Security update for samba","description":"This update for samba fixes the following issues:\n\n- CVE-2026-6949: TSIG packet with crafted name compression can crash internal DNS server (bsc#1271672).\n- CVE-2026-15779: `pam_winbind` module with `mkhomedir` set allows `chown` of critical system paths without validation\n  (bsc#1271469).\n- CVE-2026-58216: 6-byte heap OOB read in packet parser of the `kpasswd` service (bsc#1271674).\n- CVE-2026-58218: DNS TKEY negotiation stores unauthenticated GSS contexts in a fixed FIFO before authentication\n  completes (bsc#1271675).\n- CVE-2026-58221: authenticated LDAP access to internal LDB special DNs permits domain takeover (bsc#1271676).\n- CVE-2026-58222: LDAP Compare filter injection and trusted-request confusion disclose protected attributes\n  (bsc#1271677).\n- CVE-2026-58224: heap OOB read due to unchecked packet length fields in CTDB (bsc#1271673).\n","status":"published","published":"2026-07-29T05:01:08Z","modified":"2026-07-31T18:24:08.583814466Z","updated_at":"2026-11-02T16:58:41.885092Z"},{"id":"openSUSE-SU-2026:21540-1","title":"Security update for samba","description":"This update for samba fixes the following issues:\n\nUpdate to 4.22.11.\n\nSecurity issues fixed:\n\n- CVE-2026-1933: missing access check on reparse point operations allows unauthorized users to modify the\n  `user.SmbReparse` xattr (bsc#1261188).\n- CVE-2026-2340: WORM vfs module does not block directory modification and allows file changes by any user with\n  write access (bsc#1261158).\n- CVE-2026-3012: auto-enrolment GPO installing CA certificate over http without verification (bsc#1261159).\n- CVE-2026-3238: NULL pointer dereference in the WINS server compoenent of the AD domain controller code can lead\n  to crash via crafted UDP packet (bsc#1261160).\n- CVE-2026-4408: improper escaping allows for remote command execution via the DCE/RPC SAMR server (bsc#1261163).\n- CVE-2026-4480: improper escaping allows for unauthenticated remote code execution via the printing subsystem\n  (bsc#1261161).\n- CVE-2026-6949: TSIG packet with crafted name compression can crash internal DNS server (bsc#1271672).\n- CVE-2026-15779: `pam_winbind` module with `mkhomedir` set allows `chown` of critical system paths without validation\n  (bsc#1271469).\n- CVE-2026-58216: 6-byte heap OOB read in packet parser of the `kpasswd` service (bsc#1271674).\n- CVE-2026-58218: DNS TKEY negotiation stores unauthenticated GSS contexts in a fixed FIFO before authentication\n  completes (bsc#1271675).\n- CVE-2026-58221: authenticated LDAP access to internal LDB special DNs permits domain takeover (bsc#1271676).\n- CVE-2026-58222: LDAP Compare filter injection and trusted-request confusion disclose protected attributes\n  (bsc#1271677).\n- CVE-2026-58224: heap OOB read due to unchecked packet length fields in CTDB (bsc#1271673).\n\nOther updates and bugfixes:\n\n- `samba-tool`: do not complain of no subcommand with `-V` (bsc#1273189, bso#15770).\n- Add `python3-cryptography` and `python3-requests` requirements for `samba-python3`.\n","status":"published","published":"2026-08-06T09:33:09Z","modified":"2026-08-08T18:23:58.443729944Z","updated_at":"2026-11-02T16:58:41.885092Z"},{"id":"SUSE-SU-2026:22977-1","title":"Security update for samba","description":"This update for samba fixes the following issues:\n\n- CVE-2026-6949: TSIG packet with crafted name compression can crash internal DNS server (bsc#1271672).\n- CVE-2026-15779: `pam_winbind` module with `mkhomedir` set allows `chown` of critical system paths without validation\n  (bsc#1271469).\n- CVE-2026-58216: 6-byte heap OOB read in packet parser of the `kpasswd` service (bsc#1271674).\n- CVE-2026-58218: DNS TKEY negotiation stores unauthenticated GSS contexts in a fixed FIFO before authentication\n  completes (bsc#1271675).\n- CVE-2026-58221: authenticated LDAP access to internal LDB special DNs permits domain takeover (bsc#1271676).\n- CVE-2026-58222: LDAP Compare filter injection and trusted-request confusion disclose protected attributes\n  (bsc#1271677).\n- CVE-2026-58224: heap OOB read due to unchecked packet length fields in CTDB (bsc#1271673).\n","status":"published","published":"2026-07-29T04:55:06Z","modified":"2026-08-04T18:23:41.980840616Z","updated_at":"2026-11-02T15:54:03.503431Z"},{"id":"SUSE-SU-2026:23003-1","title":"Security update for samba","description":"This update for samba fixes the following issues:\n\nUpdate to 4.22.11.\n\nSecurity issues fixed:\n\n- CVE-2026-1933: missing access check on reparse point operations allows unauthorized users to modify the\n  `user.SmbReparse` xattr (bsc#1261188).\n- CVE-2026-2340: WORM vfs module does not block directory modification and allows file changes by any user with\n  write access (bsc#1261158).\n- CVE-2026-3012: auto-enrolment GPO installing CA certificate over http without verification (bsc#1261159).\n- CVE-2026-3238: NULL pointer dereference in the WINS server compoenent of the AD domain controller code can lead\n  to crash via crafted UDP packet (bsc#1261160).\n- CVE-2026-4408: improper escaping allows for remote command execution via the DCE/RPC SAMR server (bsc#1261163).\n- CVE-2026-4480: improper escaping allows for unauthenticated remote code execution via the printing subsystem\n  (bsc#1261161).\n- CVE-2026-6949: TSIG packet with crafted name compression can crash internal DNS server (bsc#1271672).\n- CVE-2026-15779: `pam_winbind` module with `mkhomedir` set allows `chown` of critical system paths without validation\n  (bsc#1271469).\n- CVE-2026-58216: 6-byte heap OOB read in packet parser of the `kpasswd` service (bsc#1271674).\n- CVE-2026-58218: DNS TKEY negotiation stores unauthenticated GSS contexts in a fixed FIFO before authentication\n  completes (bsc#1271675).\n- CVE-2026-58221: authenticated LDAP access to internal LDB special DNs permits domain takeover (bsc#1271676).\n- CVE-2026-58222: LDAP Compare filter injection and trusted-request confusion disclose protected attributes\n  (bsc#1271677).\n- CVE-2026-58224: heap OOB read due to unchecked packet length fields in CTDB (bsc#1271673).\n\nOther updates and bugfixes:\n\n- `samba-tool`: do not complain of no subcommand with `-V` (bsc#1273189, bso#15770).\n- Add `python3-cryptography` and `python3-requests` requirements for `samba-python3`.\n","status":"published","published":"2026-08-06T09:27:44Z","modified":"2026-08-12T18:23:35.880900792Z","updated_at":"2026-11-02T15:54:03.503431Z"},{"id":"SUSE-SU-2026:23129-1","title":"Security update for samba","description":"This update for samba fixes the following issues:\n\nUpdate to 4.22.11.\n\nSecurity issues fixed:\n\n- CVE-2026-1933: missing access check on reparse point operations allows unauthorized users to modify the\n  `user.SmbReparse` xattr (bsc#1261188).\n- CVE-2026-2340: WORM vfs module does not block directory modification and allows file changes by any user with\n  write access (bsc#1261158).\n- CVE-2026-3012: auto-enrolment GPO installing CA certificate over http without verification (bsc#1261159).\n- CVE-2026-3238: NULL pointer dereference in the WINS server compoenent of the AD domain controller code can lead\n  to crash via crafted UDP packet (bsc#1261160).\n- CVE-2026-4408: improper escaping allows for remote command execution via the DCE/RPC SAMR server (bsc#1261163).\n- CVE-2026-4480: improper escaping allows for unauthenticated remote code execution via the printing subsystem\n  (bsc#1261161).\n- CVE-2026-6949: TSIG packet with crafted name compression can crash internal DNS server (bsc#1271672).\n- CVE-2026-15779: `pam_winbind` module with `mkhomedir` set allows `chown` of critical system paths without validation\n  (bsc#1271469).\n- CVE-2026-58216: 6-byte heap OOB read in packet parser of the `kpasswd` service (bsc#1271674).\n- CVE-2026-58218: DNS TKEY negotiation stores unauthenticated GSS contexts in a fixed FIFO before authentication\n  completes (bsc#1271675).\n- CVE-2026-58221: authenticated LDAP access to internal LDB special DNs permits domain takeover (bsc#1271676).\n- CVE-2026-58222: LDAP Compare filter injection and trusted-request confusion disclose protected attributes\n  (bsc#1271677).\n- CVE-2026-58224: heap OOB read due to unchecked packet length fields in CTDB (bsc#1271673).\n\nOther updates and bugfixes:\n\n- `samba-tool`: do not complain of no subcommand with `-V` (bsc#1273189, bso#15770).\n- Add `python3-cryptography` and `python3-requests` requirements for `samba-python3`.\n","status":"published","published":"2026-08-06T09:27:44Z","modified":"2026-08-14T18:23:40.117567547Z","updated_at":"2026-11-02T15:54:03.503431Z"},{"id":"SUSE-SU-2026:23152-1","title":"Security update for samba","description":"This update for samba fixes the following issues:\n\nUpdate to 4.22.11.\n\nSecurity issues fixed:\n\n- CVE-2026-1933: missing access check on reparse point operations allows unauthorized users to modify the\n  `user.SmbReparse` xattr (bsc#1261188).\n- CVE-2026-2340: WORM vfs module does not block directory modification and allows file changes by any user with\n  write access (bsc#1261158).\n- CVE-2026-3012: auto-enrolment GPO installing CA certificate over http without verification (bsc#1261159).\n- CVE-2026-3238: NULL pointer dereference in the WINS server compoenent of the AD domain controller code can lead\n  to crash via crafted UDP packet (bsc#1261160).\n- CVE-2026-4408: improper escaping allows for remote command execution via the DCE/RPC SAMR server (bsc#1261163).\n- CVE-2026-4480: improper escaping allows for unauthenticated remote code execution via the printing subsystem\n  (bsc#1261161).\n- CVE-2026-6949: TSIG packet with crafted name compression can crash internal DNS server (bsc#1271672).\n- CVE-2026-15779: `pam_winbind` module with `mkhomedir` set allows `chown` of critical system paths without validation\n  (bsc#1271469).\n- CVE-2026-58216: 6-byte heap OOB read in packet parser of the `kpasswd` service (bsc#1271674).\n- CVE-2026-58218: DNS TKEY negotiation stores unauthenticated GSS contexts in a fixed FIFO before authentication\n  completes (bsc#1271675).\n- CVE-2026-58221: authenticated LDAP access to internal LDB special DNs permits domain takeover (bsc#1271676).\n- CVE-2026-58222: LDAP Compare filter injection and trusted-request confusion disclose protected attributes\n  (bsc#1271677).\n- CVE-2026-58224: heap OOB read due to unchecked packet length fields in CTDB (bsc#1271673).\n\nOther updates and bugfixes:\n\n- `samba-tool`: do not complain of no subcommand with `-V` (bsc#1273189, bso#15770).\n- Add `python3-cryptography` and `python3-requests` requirements for `samba-python3`.\n","status":"published","published":"2026-08-06T09:27:44Z","modified":"2026-08-14T18:23:41.55619733Z","updated_at":"2026-11-02T15:54:03.503431Z"},{"id":"SUSE-SU-2026:3362-1","title":"Security update for samba","description":"This update for samba fixes the following issues\n\n- CVE-2026-6949: TSIG packet with crafted name compression can crash internal DNS server (bsc#1271672).\n- CVE-2026-15779: `pam_winbind` module with `mkhomedir` set allows `chown` of critical system paths without validation\n  (bsc#1271469).\n- CVE-2026-58216: 6-byte heap OOB read in packet parser of the `kpasswd` service (bsc#1271674).\n- CVE-2026-58218: DNS TKEY negotiation stores unauthenticated GSS contexts in a fixed FIFO before authentication\n  completes (bsc#1271675).\n- CVE-2026-58221: authenticated LDAP access to internal LDB special DNs permits domain takeover (bsc#1271676).\n- CVE-2026-58222: LDAP Compare filter injection and trusted-request confusion disclose protected attributes\n  (bsc#1271677).\n- CVE-2026-58224: heap OOB read due to unchecked packet length fields in CTDB (bsc#1271673).\n","status":"published","published":"2026-07-28T12:18:44Z","modified":"2026-07-29T09:00:06.310039327Z","updated_at":"2026-11-02T15:54:04.987808Z"},{"id":"SUSE-SU-2026:3363-1","title":"Security update for samba","description":"This update for samba fixes the following issues\n\n- CVE-2026-6949: TSIG packet with crafted name compression can crash internal DNS server (bsc#1271672).\n- CVE-2026-15779: `pam_winbind` module with `mkhomedir` set allows `chown` of critical system paths without validation\n  (bsc#1271469).\n- CVE-2026-58216: 6-byte heap OOB read in packet parser of the `kpasswd` service (bsc#1271674).\n- CVE-2026-58218: DNS TKEY negotiation stores unauthenticated GSS contexts in a fixed FIFO before authentication\n  completes (bsc#1271675).\n- CVE-2026-58221: authenticated LDAP access to internal LDB special DNs permits domain takeover (bsc#1271676).\n- CVE-2026-58222: LDAP Compare filter injection and trusted-request confusion disclose protected attributes\n  (bsc#1271677).\n- CVE-2026-58224: heap OOB read due to unchecked packet length fields in CTDB (bsc#1271673).\n","status":"published","published":"2026-07-28T12:19:16Z","modified":"2026-07-29T09:00:06.320218046Z","updated_at":"2026-11-02T15:54:04.987808Z"},{"id":"SUSE-SU-2026:3364-1","title":"Security update for samba","description":"This update for samba fixes the following issues\n\n- CVE-2026-6949: TSIG packet with crafted name compression can crash internal DNS server (bsc#1271672).\n- CVE-2026-15779: `pam_winbind` module with `mkhomedir` set allows `chown` of critical system paths without validation\n  (bsc#1271469).\n- CVE-2026-58216: 6-byte heap OOB read in packet parser of the `kpasswd` service (bsc#1271674).\n- CVE-2026-58218: DNS TKEY negotiation stores unauthenticated GSS contexts in a fixed FIFO before authentication\n  completes (bsc#1271675).\n- CVE-2026-58221: authenticated LDAP access to internal LDB special DNs permits domain takeover (bsc#1271676).\n- CVE-2026-58222: LDAP Compare filter injection and trusted-request confusion disclose protected attributes\n  (bsc#1271677).\n- CVE-2026-58224: heap OOB read due to unchecked packet length fields in CTDB (bsc#1271673).\n","status":"published","published":"2026-07-28T12:19:48Z","modified":"2026-07-29T09:00:06.326518457Z","updated_at":"2026-11-02T15:54:04.987808Z"},{"id":"SUSE-SU-2026:3365-1","title":"Security update for samba","description":"This update for samba fixes the following issues\n\n- CVE-2026-6949: TSIG packet with crafted name compression can crash internal DNS server (bsc#1271672).\n- CVE-2026-15779: `pam_winbind` module with `mkhomedir` set allows `chown` of critical system paths without validation\n  (bsc#1271469).\n- CVE-2026-58216: 6-byte heap OOB read in packet parser of the `kpasswd` service (bsc#1271674).\n- CVE-2026-58218: DNS TKEY negotiation stores unauthenticated GSS contexts in a fixed FIFO before authentication\n  completes (bsc#1271675).\n- CVE-2026-58221: authenticated LDAP access to internal LDB special DNs permits domain takeover (bsc#1271676).\n- CVE-2026-58222: LDAP Compare filter injection and trusted-request confusion disclose protected attributes\n  (bsc#1271677).\n- CVE-2026-58224: heap OOB read due to unchecked packet length fields in CTDB (bsc#1271673).\n","status":"published","published":"2026-07-28T12:20:54Z","modified":"2026-07-29T09:00:06.307576071Z","updated_at":"2026-11-02T15:54:04.987808Z"},{"id":"SUSE-SU-2026:3366-1","title":"Security update for samba","description":"This update for samba fixes the following issues\n\n- CVE-2026-6949: TSIG packet with crafted name compression can crash internal DNS server (bsc#1271672).\n- CVE-2026-15779: `pam_winbind` module with `mkhomedir` set allows `chown` of critical system paths without validation\n  (bsc#1271469).\n- CVE-2026-58216: 6-byte heap OOB read in packet parser of the `kpasswd` service (bsc#1271674).\n- CVE-2026-58218: DNS TKEY negotiation stores unauthenticated GSS contexts in a fixed FIFO before authentication\n  completes (bsc#1271675).\n- CVE-2026-58221: authenticated LDAP access to internal LDB special DNs permits domain takeover (bsc#1271676).\n- CVE-2026-58222: LDAP Compare filter injection and trusted-request confusion disclose protected attributes\n  (bsc#1271677).\n- CVE-2026-58224: heap OOB read due to unchecked packet length fields in CTDB (bsc#1271673).\n","status":"published","published":"2026-07-28T12:21:22Z","modified":"2026-07-29T09:00:06.274692544Z","updated_at":"2026-11-02T15:54:04.987808Z"},{"id":"SUSE-SU-2026:3367-1","title":"Security update for samba","description":"This update for samba fixes the following issues\n\n- CVE-2026-6949: TSIG packet with crafted name compression can crash internal DNS server (bsc#1271672).\n- CVE-2026-15779: `pam_winbind` module with `mkhomedir` set allows `chown` of critical system paths without validation\n  (bsc#1271469).\n- CVE-2026-58216: 6-byte heap OOB read in packet parser of the `kpasswd` service (bsc#1271674).\n- CVE-2026-58218: DNS TKEY negotiation stores unauthenticated GSS contexts in a fixed FIFO before authentication\n  completes (bsc#1271675).\n- CVE-2026-58221: authenticated LDAP access to internal LDB special DNs permits domain takeover (bsc#1271676).\n- CVE-2026-58222: LDAP Compare filter injection and trusted-request confusion disclose protected attributes\n  (bsc#1271677).\n- CVE-2026-58224: heap OOB read due to unchecked packet length fields in CTDB (bsc#1271673).\n","status":"published","published":"2026-07-28T12:22:46Z","modified":"2026-07-29T09:00:06.358253215Z","updated_at":"2026-11-02T15:54:04.987808Z"}]}}