{"id":"CVE-2026-6245","aliases":["DEBIAN-CVE-2026-6245","EUVD-2026-23032","GHSA-g672-w7xh-qp9j","OESA-2026-2169","OESA-2026-2170","OESA-2026-2171","UBUNTU-CVE-2026-6245","USN-8355-1","openSUSE-SU-2026:10659-1"],"status":"published","title":"Sssd: out-of-bounds read in the sssd","description":"A flaw was found in the System Security Services Daemon (SSSD). The pam_passkey_child_read_data() function within the PAM passkey responder fails to properly handle raw bytes received from a pipe. Because the data is treated as a NUL-terminated C string without explicit termination, it results in an out-of-bounds read when processed by functions like snprintf(). A local attacker could potentially trigger this vulnerability by initiating a crafted passkey authentication request, causing the SSSD PAM responder to crash, resulting in a local Denial of Service (DoS).","severity":{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00135,"percentile":0.03019,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-805"],"published":"2026-04-15T18:35:19Z","modified":"2026-11-10T18:14:50Z","fixes":[{"ecosystem":"Debian:14","package":"sssd","fixed_in":["2.13.1-1"],"sources":["osv"]},{"ecosystem":"openEuler:24.03-LTS","package":"sssd","fixed_in":["2.9.4-18.oe2403"],"sources":["osv"]},{"ecosystem":"openEuler:24.03-LTS-SP1","package":"sssd","fixed_in":["2.9.4-18.oe2403sp1"],"sources":["osv"]},{"ecosystem":"openEuler:24.03-LTS-SP3","package":"sssd","fixed_in":["2.9.4-18.oe2403sp3"],"sources":["osv"]},{"ecosystem":"Ubuntu:24.04:LTS","package":"sssd","fixed_in":["2.9.4-1.1ubuntu6.5"],"sources":["osv"]},{"ecosystem":"Ubuntu:25.10","package":"sssd","fixed_in":["2.10.1-2ubuntu5.2"],"sources":["osv"]},{"ecosystem":"Ubuntu:26.04:LTS","package":"sssd","fixed_in":["2.12.0-1ubuntu5.1"],"sources":["osv"]},{"ecosystem":"openSUSE:Tumbleweed","package":"sssd","fixed_in":["2.13.0-1.1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:13","package":"sssd","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.10.1-2","2.11.1-1","2.11.1-2","2.11.1-2.1","2.12.0-1","2.12.0-2","2.12.0-3~exp0","2.12.0-4","2.13.1-1","2.13.1-2","2.13.1-3","2.13.1-4"]},{"source":"osv","ecosystem":"Debian:14","package":"sssd","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.13.1-1"}]}],"versions":["2.10.1-2","2.11.1-1","2.11.1-2","2.11.1-2.1","2.12.0-1","2.12.0-2","2.12.0-3~exp0","2.12.0-4"]},{"source":"osv","ecosystem":"openEuler:24.03-LTS","package":"sssd","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.9.4-18.oe2403"}]}]},{"source":"osv","ecosystem":"openEuler:24.03-LTS-SP1","package":"sssd","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.9.4-18.oe2403sp1"}]}]},{"source":"osv","ecosystem":"openEuler:24.03-LTS-SP3","package":"sssd","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.9.4-18.oe2403sp3"}]}]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"sssd","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.9.4-1.1ubuntu6.5"}]}],"versions":["2.9.1-2ubuntu2","2.9.1-2ubuntu3","2.9.2-1ubuntu2","2.9.4-1ubuntu1","2.9.4-1.1ubuntu3","2.9.4-1.1ubuntu5","2.9.4-1.1ubuntu6","2.9.4-1.1ubuntu6.1","2.9.4-1.1ubuntu6.2","2.9.4-1.1ubuntu6.3","2.9.4-1.1ubuntu6.4"]},{"source":"osv","ecosystem":"Ubuntu:25.10","package":"sssd","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.10.1-2ubuntu5.2"}]}],"versions":["2.10.1-2ubuntu4","2.10.1-2ubuntu5","2.10.1-2ubuntu5.1"]},{"source":"osv","ecosystem":"Ubuntu:26.04:LTS","package":"sssd","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.12.0-1ubuntu5.1"}]}],"versions":["2.10.1-2ubuntu5","2.10.1-2ubuntu7","2.12.0-1ubuntu3","2.12.0-1ubuntu4","2.12.0-1ubuntu5"]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"sssd","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.9.4-1.1ubuntu6.5"}]}],"versions":["2.9.1-2ubuntu2","2.9.1-2ubuntu3","2.9.2-1ubuntu2","2.9.4-1ubuntu1","2.9.4-1.1ubuntu3","2.9.4-1.1ubuntu5","2.9.4-1.1ubuntu6","2.9.4-1.1ubuntu6.1","2.9.4-1.1ubuntu6.2","2.9.4-1.1ubuntu6.3","2.9.4-1.1ubuntu6.4"]},{"source":"osv","ecosystem":"Ubuntu:25.10","package":"sssd","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.10.1-2ubuntu5.2"}]}],"versions":["2.10.1-2ubuntu4","2.10.1-2ubuntu5","2.10.1-2ubuntu5.1"]},{"source":"osv","ecosystem":"Ubuntu:26.04:LTS","package":"sssd","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.12.0-1ubuntu5.1"}]}],"versions":["2.10.1-2ubuntu5","2.10.1-2ubuntu7","2.12.0-1ubuntu3","2.12.0-1ubuntu4","2.12.0-1ubuntu5"]},{"source":"osv","ecosystem":"openSUSE:Tumbleweed","package":"sssd","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.13.0-1.1"}]}]}],"products":[{"vendor":"fedoraproject","product":"sssd"},{"vendor":"red hat","product":"red hat enterprise linux 10"},{"vendor":"red hat","product":"red hat enterprise linux 6"},{"vendor":"red hat","product":"red hat enterprise linux 7"},{"vendor":"red hat","product":"red hat enterprise linux 8"},{"vendor":"red hat","product":"red hat enterprise linux 9"},{"vendor":"red hat","product":"red hat openshift container platform 4"},{"vendor":"redhat","product":"enterprise_linux"},{"vendor":"redhat","product":"openshift_container_platform"}],"references":[{"url":"https://access.redhat.com/errata/RHSA-2026:97077","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"https://access.redhat.com/errata/RHSA-2026:97438","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"https://access.redhat.com/security/cve/CVE-2026-6245","tags":["vdb-entry","x_refsource_REDHAT","Vendor Advisory"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2457954","tags":["issue-tracking","x_refsource_REDHAT","Issue Tracking","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-6245","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-g672-w7xh-qp9j"},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-6245","tags":["advisory"]},{"url":"https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-2169","tags":["advisory"]},{"url":"https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-2170","tags":["advisory"]},{"url":"https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-2171","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2026-6245","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-6245","tags":["report"]},{"url":"https://ubuntu.com/security/notices/USN-8355-1","tags":["advisory"]},{"url":"","tags":["advisory"]},{"url":"https://www.suse.com/security/cve/CVE-2026-6245","tags":["web"]}],"sources":{"cve":[{"id":"CVE-2026-6245","title":"Sssd: out-of-bounds read in the sssd","description":"A flaw was found in the System Security Services Daemon (SSSD). The pam_passkey_child_read_data() function within the PAM passkey responder fails to properly handle raw bytes received from a pipe. Because the data is treated as a NUL-terminated C string without explicit termination, it results in an out-of-bounds read when processed by functions like snprintf(). A local attacker could potentially trigger this vulnerability by initiating a crafted passkey authentication request, causing the SSSD PAM responder to crash, resulting in a local Denial of Service (DoS).","status":"published","published":"2026-04-15T18:35:19.401Z","modified":"2026-11-10T18:14:50.699Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"cna"}],"cwes":["CWE-805"],"updated_at":"2026-11-10T19:39:59.74912Z"}],"euvd":[{"id":"EUVD-2026-23032","description":"A flaw was found in the System Security Services Daemon (SSSD). The pam_passkey_child_read_data() function within the PAM passkey responder fails to properly handle raw bytes received from a pipe. Because the data is treated as a NUL-terminated C string without explicit termination, it results in an out-of-bounds read when processed by functions like snprintf(). A local attacker could potentially trigger this vulnerability by initiating a crafted passkey authentication request, causing the SSSD PAM responder to crash, resulting in a local Denial of Service (DoS).","status":"published","published":"2026-04-15T18:35:19Z","modified":"2026-11-10T18:14:50Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-10T19:22:12.252795Z"}],"ghsa":[{"id":"GHSA-g672-w7xh-qp9j","title":"A flaw was found in the System Security Services Daemon (SSSD). The pam_passkey_child_read_data()...","description":"A flaw was found in the System Security Services Daemon (SSSD). The pam_passkey_child_read_data() function within the PAM passkey responder fails to properly handle raw bytes received from a pipe. Because the data is treated as a NUL-terminated C string without explicit termination, it results in an out-of-bounds read when processed by functions like snprintf(). A local attacker could potentially trigger this vulnerability by initiating a crafted passkey authentication request, causing the SSSD PAM responder to crash, resulting in a local Denial of Service (DoS).","status":"published","published":"2026-04-15T21:30:18Z","modified":"2026-11-10T21:31:28Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"cwes":["CWE-805"],"updated_at":"2026-11-10T21:57:46.822341Z"}],"nvd":[{"id":"CVE-2026-6245","description":"A flaw was found in the System Security Services Daemon (SSSD). The pam_passkey_child_read_data() function within the PAM passkey responder fails to properly handle raw bytes received from a pipe. Because the data is treated as a NUL-terminated C string without explicit termination, it results in an out-of-bounds read when processed by functions like snprintf(). A local attacker could potentially trigger this vulnerability by initiating a crafted passkey authentication request, causing the SSSD PAM responder to crash, resulting in a local Denial of Service (DoS).","status":"published","published":"2026-04-15T19:16:38.25Z","modified":"2026-11-10T19:21:20.093Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"secondary"}],"cwes":["CWE-805"],"updated_at":"2026-11-10T22:21:27.838416Z"}],"osv":[{"id":"DEBIAN-CVE-2026-6245","description":"A flaw was found in the System Security Services Daemon (SSSD). The pam_passkey_child_read_data() function within the PAM passkey responder fails to properly handle raw bytes received from a pipe. Because the data is treated as a NUL-terminated C string without explicit termination, it results in an out-of-bounds read when processed by functions like snprintf(). A local attacker could potentially trigger this vulnerability by initiating a crafted passkey authentication request, causing the SSSD PAM responder to crash, resulting in a local Denial of Service (DoS).","status":"published","published":"2026-04-15T19:16:38.25Z","modified":"2026-11-11T09:47:47.272229582Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-07T11:15:14.449016Z"},{"id":"OESA-2026-2169","title":"sssd security update","description":"Provides a set of daemons to manage access to remote directories and authentication mechanisms. It provides an NSS and PAM interface toward the system and a pluggable back end system to connect to multiple different account sources. It is also the basis to provide client auditing and policy services for projects like FreeIPA.\r\n\r\nSecurity Fix(es):\n\nA flaw was found in the System Security Services Daemon (SSSD). The pam_passkey_child_read_data() function within the PAM passkey responder fails to properly handle raw bytes received from a pipe. Because the data is treated as a NUL-terminated C string without explicit termination, it results in an out-of-bounds read when processed by functions like snprintf(). A local attacker could potentially trigger this vulnerability by initiating a crafted passkey authentication request, causing the SSSD PAM responder to crash, resulting in a local Denial of Service (DoS).(CVE-2026-6245)","status":"published","published":"2026-05-03T11:11:09Z","modified":"2026-08-18T01:19:56.718755094Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T15:52:46.087701Z"},{"id":"OESA-2026-2170","title":"sssd security update","description":"Provides a set of daemons to manage access to remote directories and authentication mechanisms. It provides an NSS and PAM interface toward the system and a pluggable back end system to connect to multiple different account sources. It is also the basis to provide client auditing and policy services for projects like FreeIPA.\r\n\r\nSecurity Fix(es):\n\nA flaw was found in the System Security Services Daemon (SSSD). The pam_passkey_child_read_data() function within the PAM passkey responder fails to properly handle raw bytes received from a pipe. Because the data is treated as a NUL-terminated C string without explicit termination, it results in an out-of-bounds read when processed by functions like snprintf(). A local attacker could potentially trigger this vulnerability by initiating a crafted passkey authentication request, causing the SSSD PAM responder to crash, resulting in a local Denial of Service (DoS).(CVE-2026-6245)","status":"published","published":"2026-05-03T11:11:09Z","modified":"2026-08-18T01:19:50.896728306Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T15:52:46.087701Z"},{"id":"OESA-2026-2171","title":"sssd security update","description":"Provides a set of daemons to manage access to remote directories and authentication mechanisms. It provides an NSS and PAM interface toward the system and a pluggable back end system to connect to multiple different account sources. It is also the basis to provide client auditing and policy services for projects like FreeIPA.\r\n\r\nSecurity Fix(es):\n\nA flaw was found in the System Security Services Daemon (SSSD). The pam_passkey_child_read_data() function within the PAM passkey responder fails to properly handle raw bytes received from a pipe. Because the data is treated as a NUL-terminated C string without explicit termination, it results in an out-of-bounds read when processed by functions like snprintf(). A local attacker could potentially trigger this vulnerability by initiating a crafted passkey authentication request, causing the SSSD PAM responder to crash, resulting in a local Denial of Service (DoS).(CVE-2026-6245)","status":"published","published":"2026-05-03T11:11:09Z","modified":"2026-08-18T01:19:50.814435388Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T15:52:46.087701Z"},{"id":"UBUNTU-CVE-2026-6245","description":"A flaw was found in the System Security Services Daemon (SSSD). The pam_passkey_child_read_data() function within the PAM passkey responder fails to properly handle raw bytes received from a pipe. Because the data is treated as a NUL-terminated C string without explicit termination, it results in an out-of-bounds read when processed by functions like snprintf(). A local attacker could potentially trigger this vulnerability by initiating a crafted passkey authentication request, causing the SSSD PAM responder to crash, resulting in a local Denial of Service (DoS).","status":"published","published":"2026-04-15T19:16:00Z","modified":"2026-06-01T19:00:12.380579017Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T16:56:43.630667Z"},{"id":"openSUSE-SU-2026:10659-1","title":"libipa_hbac-devel-2.13.0-1.1 on GA media","description":"These are all security issues fixed in the libipa_hbac-devel-2.13.0-1.1 package on the GA media of openSUSE Tumbleweed.","status":"published","published":"2026-04-29T00:00:00Z","modified":"2026-04-30T08:16:36.186964Z","updated_at":"2026-11-02T16:58:38.415593Z"},{"id":"USN-8355-1","title":"sssd vulnerability","description":"It was discovered that SSSD did not properly handle raw bytes in the PAM\npasskey responder. A local attacker could possibly use this issue to cause\nthe SSSD PAM responder to crash, resulting in a denial of service.","status":"published","published":"2026-06-01T14:05:32Z","modified":"2026-06-01T19:14:33.490653286Z","updated_at":"2026-11-02T16:58:25.103481Z"}]}}