{"id":"CVE-2026-90995","aliases":["DEBIAN-CVE-2026-90995","EUVD-2026-77589","GHSA-q5vg-f923-829p","OESA-2026-4284","OESA-2026-4285","OESA-2026-4286","OESA-2026-4287","SUSE-SU-2026:5079-1","UBUNTU-CVE-2026-90995"],"status":"published","title":"Sssd: sssd: local denial of service due to null pointer dereference in pam responder","description":"A flaw was found in SSSD (System Security Services Daemon). A local attacker with privileges to connect to the PAM (Pluggable Authentication Modules) responder socket can send a specially crafted protocol request. If the `pam_app_services` configuration is enabled and the service item is omitted from the request, a NULL pointer dereference can occur. This vulnerability leads to a denial of service, causing the PAM responder to crash and disrupt authentication services.","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":"2026-11-09","score":0.00135,"percentile":0.03027,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-476"],"published":"2026-09-14T15:55:32Z","modified":"2026-11-07T11:00:10Z","affected":[{"source":"osv","ecosystem":"Debian:12","package":"sssd","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.10.1-1","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","2.8.2-4","2.8.2-4+deb12u1","2.9.1-1","2.9.1-2","2.9.2-1","2.9.4-1","2.9.4-1.1","2.9.4-1.1~exp1","2.9.4-2","2.9.5-1","2.9.5-2","2.9.5-3","2.9.5-4","2.9.5-5"]},{"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"}]}],"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":"openEuler:22.03-LTS-SP4","package":"sssd","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.6.1-33.oe2203sp4"}]}],"bundled":3},{"source":"osv","ecosystem":"openEuler:24.03-LTS-SP1","package":"sssd","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.9.4-27.oe2403sp1"}]}],"bundled":3},{"source":"osv","ecosystem":"openEuler:24.03-LTS-SP3","package":"sssd","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.9.4-27.oe2403sp3"}]}],"bundled":3},{"source":"osv","ecosystem":"openEuler:24.03-LTS-SP4","package":"sssd","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.9.4-27.oe2403sp4"}]}],"bundled":3},{"source":"osv","ecosystem":"SUSE:Linux Enterprise Server 15 SP6-LTSS","package":"sssd","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.10.2-150600.3.58.1"}]}],"bundled":19},{"source":"osv","ecosystem":"SUSE:Linux Enterprise Server for SAP Applications 15 SP6","package":"sssd","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.10.2-150600.3.58.1"}]}],"bundled":19},{"source":"osv","ecosystem":"Ubuntu:Pro:16.04:LTS","package":"sssd","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.12.5-2","1.13.1-2","1.13.2-1","1.13.3-1","1.13.4-1","1.13.4-1ubuntu1","1.13.4-1ubuntu1.1","1.13.4-1ubuntu1.2","1.13.4-1ubuntu1.5","1.13.4-1ubuntu1.6","1.13.4-1ubuntu1.7","1.13.4-1ubuntu1.8","1.13.4-1ubuntu1.9","1.13.4-1ubuntu1.10","1.13.4-1ubuntu1.11","1.13.4-1ubuntu1.12","1.13.4-1ubuntu1.13","1.13.4-1ubuntu1.14","1.13.4-1ubuntu1.15","1.13.4-1ubuntu1.15+esm1"]},{"source":"osv","ecosystem":"Ubuntu:Pro:18.04:LTS","package":"sssd","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.15.3-2ubuntu1","1.15.3-3ubuntu1","1.16.0-5ubuntu1","1.16.0-5ubuntu2","1.16.1-1ubuntu1","1.16.1-1ubuntu1.1","1.16.1-1ubuntu1.2","1.16.1-1ubuntu1.3","1.16.1-1ubuntu1.4","1.16.1-1ubuntu1.5","1.16.1-1ubuntu1.6","1.16.1-1ubuntu1.7","1.16.1-1ubuntu1.8","1.16.1-1ubuntu1.8+esm1"]},{"source":"osv","ecosystem":"Ubuntu:Pro:20.04:LTS","package":"sssd","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.2.0-4ubuntu1","2.2.2-1","2.2.2-1ubuntu1","2.2.3-1.1ubuntu1","2.2.3-2","2.2.3-3","2.2.3-3ubuntu0.1","2.2.3-3ubuntu0.2","2.2.3-3ubuntu0.3","2.2.3-3ubuntu0.4","2.2.3-3ubuntu0.6","2.2.3-3ubuntu0.7","2.2.3-3ubuntu0.8","2.2.3-3ubuntu0.9","2.2.3-3ubuntu0.10","2.2.3-3ubuntu0.11","2.2.3-3ubuntu0.12","2.2.3-3ubuntu0.13","2.2.3-3ubuntu0.13+esm1"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"sssd","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.4.1-2ubuntu4","2.5.2-4ubuntu1","2.5.2-4ubuntu3","2.5.2-4ubuntu4","2.6.1-1ubuntu3","2.6.3-1ubuntu3","2.6.3-1ubuntu3.1","2.6.3-1ubuntu3.2","2.6.3-1ubuntu3.3","2.6.3-1ubuntu3.4","2.6.3-1ubuntu3.5","2.6.3-1ubuntu3.6","2.6.3-1ubuntu3.8","2.6.3-1ubuntu3.9"]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"sssd","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"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","2.9.4-1.1ubuntu6.5","2.9.4-1.1ubuntu6.6","2.9.4-1.1ubuntu6.7","2.9.4-1.1ubuntu6.8"]},{"source":"osv","ecosystem":"Ubuntu:26.10","package":"sssd","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.12.0-1ubuntu5","2.12.0-4ubuntu1","2.12.0-4ubuntu2","2.12.0-4ubuntu3","2.12.0-4ubuntu4"]},{"source":"osv","ecosystem":"Ubuntu:26.04:LTS","package":"sssd","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.10.1-2ubuntu5","2.10.1-2ubuntu7","2.12.0-1ubuntu3","2.12.0-1ubuntu4","2.12.0-1ubuntu5","2.12.0-1ubuntu5.1","2.12.0-1ubuntu5.2","2.12.0-1ubuntu5.3","2.12.0-1ubuntu5.4","2.12.0-1ubuntu5.5"]}],"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":"red hat","product":"red hat openshift container platform 5"},{"vendor":"redhat","product":"enterprise_linux"},{"vendor":"redhat","product":"openshift_container_platform"}],"references":[{"url":"https://access.redhat.com/security/cve/CVE-2026-90995","tags":["vdb-entry","x_refsource_REDHAT","Mitigation","Vendor Advisory","advisory"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2479464","tags":["issue-tracking","x_refsource_REDHAT","Exploit","Issue Tracking","Mitigation","Vendor Advisory","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-90995","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-q5vg-f923-829p"},{"url":"https://access.redhat.com/downloads/content/package-browser/","tags":["web"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90995.json","tags":["advisory"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-90995","tags":["advisory"]},{"url":"https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-4284","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-90994","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-90996","tags":["advisory"]},{"url":"https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-4285","tags":["advisory"]},{"url":"https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-4286","tags":["advisory"]},{"url":"https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-4287","tags":["advisory"]},{"url":"https://www.suse.com/support/update/announcement/2026/suse-su-20265079-1/","tags":["advisory"]},{"url":"https://bugzilla.suse.com/1269807","tags":["report"]},{"url":"https://bugzilla.suse.com/1273009","tags":["report"]},{"url":"https://bugzilla.suse.com/1273922","tags":["report"]},{"url":"https://bugzilla.suse.com/1273924","tags":["report"]},{"url":"https://bugzilla.suse.com/1273925","tags":["report"]},{"url":"https://bugzilla.suse.com/1280360","tags":["report"]},{"url":"https://bugzilla.suse.com/1280361","tags":["report"]},{"url":"https://bugzilla.suse.com/1280362","tags":["report"]},{"url":"https://bugzilla.suse.com/1280363","tags":["report"]},{"url":"https://bugzilla.suse.com/1282584","tags":["report"]},{"url":"https://bugzilla.suse.com/1284266","tags":["report"]},{"url":"https://bugzilla.suse.com/1284314","tags":["report"]},{"url":"https://bugzilla.suse.com/1284316","tags":["report"]},{"url":"https://bugzilla.suse.com/1284318","tags":["report"]},{"url":"https://bugzilla.suse.com/1284321","tags":["report"]},{"url":"https://bugzilla.suse.com/1284322","tags":["report"]},{"url":"https://bugzilla.suse.com/1284323","tags":["report"]},{"url":"https://bugzilla.suse.com/1284324","tags":["report"]},{"url":"https://bugzilla.suse.com/1284326","tags":["report"]},{"url":"https://bugzilla.suse.com/1284470","tags":["report"]},{"url":"https://www.suse.com/security/cve/CVE-2026-104029","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-104031","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-104033","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-104036","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-104037","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-104038","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-104039","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-104043","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-104045","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-12610","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-68742","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-68743","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-68744","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-90462","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-90463","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-90994","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-90995","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-90996","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-92821","tags":["web"]},{"url":"https://ubuntu.com/security/CVE-2026-90995","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-90995","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2026-90995","title":"Sssd: sssd: local denial of service due to null pointer dereference in pam responder","description":"A flaw was found in SSSD (System Security Services Daemon). A local attacker with privileges to connect to the PAM (Pluggable Authentication Modules) responder socket can send a specially crafted protocol request. If the `pam_app_services` configuration is enabled and the service item is omitted from the request, a NULL pointer dereference can occur. This vulnerability leads to a denial of service, causing the PAM responder to crash and disrupt authentication services.","status":"published","published":"2026-09-14T15:55:32.674Z","modified":"2026-11-06T01:44:34.448Z","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-476"],"updated_at":"2026-11-06T02:55:55.947181Z"}],"euvd":[{"id":"EUVD-2026-77589","description":"A flaw was found in SSSD (System Security Services Daemon). A local attacker with privileges to connect to the PAM (Pluggable Authentication Modules) responder socket can send a specially crafted protocol request. If the `pam_app_services` configuration is enabled and the service item is omitted from the request, a NULL pointer dereference can occur. This vulnerability leads to a denial of service, causing the PAM responder to crash and disrupt authentication services.","status":"published","published":"2026-09-14T15:55:32Z","modified":"2026-11-06T01:44:34Z","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":"2026-11-06T03:02:58.554056Z"}],"ghsa":[{"id":"GHSA-q5vg-f923-829p","title":"A flaw was found in SSSD (System Security Services Daemon). A local attacker with privileges to...","description":"A flaw was found in SSSD (System Security Services Daemon). A local attacker with privileges to connect to the PAM (Pluggable Authentication Modules) responder socket can send a specially crafted protocol request. If the `pam_app_services` configuration is enabled and the service item is omitted from the request, a NULL pointer dereference can occur. This vulnerability leads to a denial of service, causing the PAM responder to crash and disrupt authentication services.","status":"published","published":"2026-09-14T18:31:21Z","modified":"2026-09-14T18:31:25Z","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-476"],"updated_at":"2026-11-02T15:11:51.662242Z"}],"nvd":[{"id":"CVE-2026-90995","description":"A flaw was found in SSSD (System Security Services Daemon). A local attacker with privileges to connect to the PAM (Pluggable Authentication Modules) responder socket can send a specially crafted protocol request. If the `pam_app_services` configuration is enabled and the service item is omitted from the request, a NULL pointer dereference can occur. This vulnerability leads to a denial of service, causing the PAM responder to crash and disrupt authentication services.","status":"published","published":"2026-09-14T16:17:42.367Z","modified":"2026-11-06T02:17:56.82Z","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-476"],"updated_at":"2026-11-06T06:59:05.303911Z"}],"osv":[{"id":"CVE-2026-90995","title":"Sssd: sssd: local denial of service due to null pointer dereference in pam responder","description":"A flaw was found in SSSD (System Security Services Daemon). A local attacker with privileges to connect to the PAM (Pluggable Authentication Modules) responder socket can send a specially crafted protocol request. If the `pam_app_services` configuration is enabled and the service item is omitted from the request, a NULL pointer dereference can occur. This vulnerability leads to a denial of service, causing the PAM responder to crash and disrupt authentication services.","status":"published","published":"2026-09-14T15:55:32.674Z","modified":"2026-11-07T02:30:20.338233876Z","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-476"],"updated_at":"2026-11-07T03:08:12.080805Z"},{"id":"DEBIAN-CVE-2026-90995","description":"A flaw was found in SSSD (System Security Services Daemon). A local attacker with privileges to connect to the PAM (Pluggable Authentication Modules) responder socket can send a specially crafted protocol request. If the `pam_app_services` configuration is enabled and the service item is omitted from the request, a NULL pointer dereference can occur. This vulnerability leads to a denial of service, causing the PAM responder to crash and disrupt authentication services.","status":"published","published":"2026-09-14T16:17:42.367Z","modified":"2026-11-07T11:00:10.7393531Z","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-2026-4284","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 sssd, specifically within the PAM (Pluggable Authentication Modules) responder\u0026apos;s protocol v1 parser, pam_parse_in_data(). A local client with access to the PAM responder\u0026apos;s UNIX socket can exploit this by negotiating protocol v1 and sending an empty or truncated PAM request body. This can trigger an out-of-bounds read, potentially causing the PAM responder to terminate or restart, leading to a local denial of service.(CVE-2026-90994)\n\nA flaw was found in SSSD (System Security Services Daemon). A local attacker with privileges to connect to the PAM (Pluggable Authentication Modules) responder socket can send a specially crafted protocol request. If the `pam_app_services` configuration is enabled and the service item is omitted from the request, a NULL pointer dereference can occur. This vulnerability leads to a denial of service, causing the PAM responder to crash and disrupt authentication services.(CVE-2026-90995)\n\nA flaw was found in sssd. A local unprivileged user could send a specially crafted request with a zero-length body to the Network Security Services (NSS) responder. This could lead to a denial-of-service condition, causing the NSS responder to become unstable or terminate. This vulnerability affects the availability of the system responder.(CVE-2026-90996)","status":"published","published":"2026-10-16T11:58:56Z","modified":"2026-10-16T12:15:07.184753934Z","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":"2026-11-02T15:52:47.643553Z"},{"id":"OESA-2026-4285","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 sssd, specifically within the PAM (Pluggable Authentication Modules) responder\u0026apos;s protocol v1 parser, pam_parse_in_data(). A local client with access to the PAM responder\u0026apos;s UNIX socket can exploit this by negotiating protocol v1 and sending an empty or truncated PAM request body. This can trigger an out-of-bounds read, potentially causing the PAM responder to terminate or restart, leading to a local denial of service.(CVE-2026-90994)\n\nA flaw was found in SSSD (System Security Services Daemon). A local attacker with privileges to connect to the PAM (Pluggable Authentication Modules) responder socket can send a specially crafted protocol request. If the `pam_app_services` configuration is enabled and the service item is omitted from the request, a NULL pointer dereference can occur. This vulnerability leads to a denial of service, causing the PAM responder to crash and disrupt authentication services.(CVE-2026-90995)\n\nA flaw was found in sssd. A local unprivileged user could send a specially crafted request with a zero-length body to the Network Security Services (NSS) responder. This could lead to a denial-of-service condition, causing the NSS responder to become unstable or terminate. This vulnerability affects the availability of the system responder.(CVE-2026-90996)","status":"published","published":"2026-10-16T11:58:57Z","modified":"2026-10-16T12:15:07.189463253Z","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":"2026-11-02T15:52:47.643553Z"},{"id":"OESA-2026-4286","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 sssd, specifically within the PAM (Pluggable Authentication Modules) responder\u0026apos;s protocol v1 parser, pam_parse_in_data(). A local client with access to the PAM responder\u0026apos;s UNIX socket can exploit this by negotiating protocol v1 and sending an empty or truncated PAM request body. This can trigger an out-of-bounds read, potentially causing the PAM responder to terminate or restart, leading to a local denial of service.(CVE-2026-90994)\n\nA flaw was found in SSSD (System Security Services Daemon). A local attacker with privileges to connect to the PAM (Pluggable Authentication Modules) responder socket can send a specially crafted protocol request. If the `pam_app_services` configuration is enabled and the service item is omitted from the request, a NULL pointer dereference can occur. This vulnerability leads to a denial of service, causing the PAM responder to crash and disrupt authentication services.(CVE-2026-90995)\n\nA flaw was found in sssd. A local unprivileged user could send a specially crafted request with a zero-length body to the Network Security Services (NSS) responder. This could lead to a denial-of-service condition, causing the NSS responder to become unstable or terminate. This vulnerability affects the availability of the system responder.(CVE-2026-90996)","status":"published","published":"2026-10-16T11:58:57Z","modified":"2026-10-16T12:15:08.16651965Z","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":"2026-11-02T15:52:47.643553Z"},{"id":"OESA-2026-4287","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 sssd, specifically within the PAM (Pluggable Authentication Modules) responder\u0026apos;s protocol v1 parser, pam_parse_in_data(). A local client with access to the PAM responder\u0026apos;s UNIX socket can exploit this by negotiating protocol v1 and sending an empty or truncated PAM request body. This can trigger an out-of-bounds read, potentially causing the PAM responder to terminate or restart, leading to a local denial of service.(CVE-2026-90994)\n\nA flaw was found in SSSD (System Security Services Daemon). A local attacker with privileges to connect to the PAM (Pluggable Authentication Modules) responder socket can send a specially crafted protocol request. If the `pam_app_services` configuration is enabled and the service item is omitted from the request, a NULL pointer dereference can occur. This vulnerability leads to a denial of service, causing the PAM responder to crash and disrupt authentication services.(CVE-2026-90995)\n\nA flaw was found in sssd. A local unprivileged user could send a specially crafted request with a zero-length body to the Network Security Services (NSS) responder. This could lead to a denial-of-service condition, causing the NSS responder to become unstable or terminate. This vulnerability affects the availability of the system responder.(CVE-2026-90996)","status":"published","published":"2026-10-16T11:58:57Z","modified":"2026-10-16T12:15:07.18052878Z","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":"2026-11-02T15:52:47.643553Z"},{"id":"UBUNTU-CVE-2026-90995","description":"A flaw was found in SSSD (System Security Services Daemon). A local attacker with privileges to connect to the PAM (Pluggable Authentication Modules) responder socket can send a specially crafted protocol request. If the `pam_app_services` configuration is enabled and the service item is omitted from the request, a NULL pointer dereference can occur. This vulnerability leads to a denial of service, causing the PAM responder to crash and disrupt authentication services.","status":"published","published":"2026-09-14T16:17:00Z","modified":"2026-10-17T13:01:17.191248699Z","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":"2026-11-02T16:57:40.980117Z"},{"id":"SUSE-SU-2026:5079-1","title":"Security update for sssd","description":"This update for sssd fixes the following issues:\n\n- CVE-2026-12610: cancelled or completed PAM request while the asynchronous child process is still running can lead to a\n  use-after-free (bsc#1269807).\n- CVE-2026-68742: unvalidated address lengths in NSS responder packet parsing can cause a heap out-of-bounds read\n  (bsc#1273922).\n- CVE-2026-68743: oversized length parameters in authentication requests can cause heap out-of-bounds reads\n  (bsc#1273925).\n- CVE-2026-68744: unshrunk packet allocations during group resolution can allow uninitialized heap memory disclosure\n  (bsc#1273924).\n- CVE-2026-90462: Fail-open in LDAP ppolicy access check allows continued authorization (bsc#1282584).\n- CVE-2026-90463: out-of-bounds read in the NSS service request parsers (bsc#1280360).\n- CVE-2026-90994: out-of-bounds read in PAM v1 parser (bsc#1280361).\n- CVE-2026-90995: NULL pointer dereference in PAM responder (bsc#1280362).\n- CVE-2026-90996: zero-length request body underflow in the NSS responder (bsc#1280363).\n- CVE-2026-92821: access control bypass due to premature LDAP access rule evaluation (bsc#1284326).\n- CVE-2026-104029: denial of service due to out-of-bounds read in autofs responder (bsc#1284314).\n- CVE-2026-104031: denial of service via memory exhaustion in autofs responder (bsc#1284316).\n- CVE-2026-104033: access control bypass due to improper LDAP shadow expiration check (bsc#1284318).\n- CVE-2026-104036: denial of service due to out-of-bounds write in NFS idmap plugin (bsc#1284321).\n- CVE-2026-104037: denial of service due to packet length underflow in autofs responder (bsc#1284322).\n- CVE-2026-104038: denial of service via missing SID extension in certificate mapping (bsc#1284323).\n- CVE-2026-104039: denial of service due to stale connection state reuse in PAM GSSAPI responder (bsc#1284324).\n- CVE-2026-104043: Denial of Service via undersized packet parsing in NSS responder (bsc#1284266).\n- CVE-2026-104045: denial of service via race condition in autofs responder (bsc#1284470).\n","status":"published","published":"2026-11-03T08:22:57Z","modified":"2026-11-03T22:45:05.157791012Z","updated_at":"2026-11-03T22:59:30.419462Z"}]}}