{"document":{"aggregate_severity":{"namespace":"https://www.suse.com/support/security/rating/","text":"important"},"category":"csaf_security_advisory","csaf_version":"2.0","distribution":{"text":"Copyright 2024 SUSE LLC. All rights reserved.","tlp":{"label":"WHITE","url":"https://www.first.org/tlp/"}},"lang":"en","notes":[{"category":"summary","text":"Security update for the Linux Kernel RT (Live Patch 5 for SUSE Linux Enterprise 15 SP7)","title":"Title of the patch"},{"category":"description","text":"\nThis update for the SUSE Linux Enterprise kernel 6.4.0-150700.7.19 fixes various security issues\n\nThe following security issues were fixed:\n\n- CVE-2023-53676: scsi: target: iscsi: Fix buffer overflow in lio_target_nacl_info_show() (bsc#1251787).\n- CVE-2025-40204: sctp: Fix MAC comparison to be constant-time (bsc#1253437).\n","title":"Description of the patch"},{"category":"details","text":"SUSE-2026-169,SUSE-SLE-Module-Live-Patching-15-SP7-2026-169","title":"Patchnames"},{"category":"legal_disclaimer","text":"CSAF 2.0 data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0).","title":"Terms of use"}],"publisher":{"category":"vendor","contact_details":"https://www.suse.com/support/security/contact/","name":"SUSE Product Security Team","namespace":"https://www.suse.com/"},"references":[{"category":"external","summary":"SUSE ratings","url":"https://www.suse.com/support/security/rating/"},{"category":"self","summary":"URL of this CSAF notice","url":"https://ftp.suse.com/pub/projects/security/csaf/suse-su-2026_0169-1.json"},{"category":"self","summary":"URL for SUSE-SU-2026:0169-1","url":"https://www.suse.com/support/update/announcement/2026/suse-su-20260169-1/"},{"category":"self","summary":"E-Mail link for SUSE-SU-2026:0169-1","url":"https://lists.suse.com/pipermail/sle-security-updates/2026-January/023802.html"},{"category":"self","summary":"SUSE Bug 1251787","url":"https://bugzilla.suse.com/1251787"},{"category":"self","summary":"SUSE Bug 1253437","url":"https://bugzilla.suse.com/1253437"},{"category":"self","summary":"SUSE CVE CVE-2023-53676 page","url":"https://www.suse.com/security/cve/CVE-2023-53676/"},{"category":"self","summary":"SUSE CVE CVE-2025-40204 page","url":"https://www.suse.com/security/cve/CVE-2025-40204/"}],"title":"Security update for the Linux Kernel RT (Live Patch 5 for SUSE Linux Enterprise 15 SP7)","tracking":{"current_release_date":"2026-01-19T16:04:33Z","generator":{"date":"2026-01-19T16:04:33Z","engine":{"name":"cve-database.git:bin/generate-csaf.pl","version":"1"}},"id":"SUSE-SU-2026:0169-1","initial_release_date":"2026-01-19T16:04:33Z","revision_history":[{"date":"2026-01-19T16:04:33Z","number":"1","summary":"Current version"}],"status":"final","version":"1"}},"product_tree":{"branches":[{"branches":[{"branches":[{"category":"product_version","name":"kernel-livepatch-6_4_0-150700_7_19-rt-2-150700.2.1.x86_64","product":{"name":"kernel-livepatch-6_4_0-150700_7_19-rt-2-150700.2.1.x86_64","product_id":"kernel-livepatch-6_4_0-150700_7_19-rt-2-150700.2.1.x86_64"}}],"category":"architecture","name":"x86_64"},{"branches":[{"category":"product_name","name":"SUSE Linux Enterprise Live Patching 15 SP7","product":{"name":"SUSE Linux Enterprise Live Patching 15 SP7","product_id":"SUSE Linux Enterprise Live Patching 15 SP7","product_identification_helper":{"cpe":"cpe:/o:suse:sle-module-live-patching:15:sp7"}}}],"category":"product_family","name":"SUSE Linux Enterprise"}],"category":"vendor","name":"SUSE"}],"relationships":[{"category":"default_component_of","full_product_name":{"name":"kernel-livepatch-6_4_0-150700_7_19-rt-2-150700.2.1.x86_64 as component of SUSE Linux Enterprise Live Patching 15 SP7","product_id":"SUSE Linux Enterprise Live Patching 15 SP7:kernel-livepatch-6_4_0-150700_7_19-rt-2-150700.2.1.x86_64"},"product_reference":"kernel-livepatch-6_4_0-150700_7_19-rt-2-150700.2.1.x86_64","relates_to_product_reference":"SUSE Linux Enterprise Live Patching 15 SP7"}]},"vulnerabilities":[{"cve":"CVE-2023-53676","ids":[{"system_name":"SUSE CVE Page","text":"https://www.suse.com/security/cve/CVE-2023-53676"}],"notes":[{"category":"general","text":"In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: target: iscsi: Fix buffer overflow in lio_target_nacl_info_show()\n\nThe function lio_target_nacl_info_show() uses sprintf() in a loop to print\ndetails for every iSCSI connection in a session without checking for the\nbuffer length. With enough iSCSI connections it's possible to overflow the\nbuffer provided by configfs and corrupt the memory.\n\nThis patch replaces sprintf() with sysfs_emit_at() that checks for buffer\nboundries.","title":"CVE description"}],"product_status":{"recommended":["SUSE Linux Enterprise Live Patching 15 SP7:kernel-livepatch-6_4_0-150700_7_19-rt-2-150700.2.1.x86_64"]},"references":[{"category":"external","summary":"CVE-2023-53676","url":"https://www.suse.com/security/cve/CVE-2023-53676"},{"category":"external","summary":"SUSE Bug 1251786 for CVE-2023-53676","url":"https://bugzilla.suse.com/1251786"},{"category":"external","summary":"SUSE Bug 1251787 for CVE-2023-53676","url":"https://bugzilla.suse.com/1251787"}],"remediations":[{"category":"vendor_fix","details":"To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or \"zypper patch\".\n","product_ids":["SUSE Linux Enterprise Live Patching 15 SP7:kernel-livepatch-6_4_0-150700_7_19-rt-2-150700.2.1.x86_64"]}],"scores":[{"cvss_v3":{"baseScore":7.8,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"products":["SUSE Linux Enterprise Live Patching 15 SP7:kernel-livepatch-6_4_0-150700_7_19-rt-2-150700.2.1.x86_64"]}],"threats":[{"category":"impact","date":"2026-01-19T16:04:33Z","details":"important"}],"title":"CVE-2023-53676"},{"cve":"CVE-2025-40204","ids":[{"system_name":"SUSE CVE Page","text":"https://www.suse.com/security/cve/CVE-2025-40204"}],"notes":[{"category":"general","text":"In the Linux kernel, the following vulnerability has been resolved:\n\nsctp: Fix MAC comparison to be constant-time\n\nTo prevent timing attacks, MACs need to be compared in constant time.\nUse the appropriate helper function for this.","title":"CVE description"}],"product_status":{"recommended":["SUSE Linux Enterprise Live Patching 15 SP7:kernel-livepatch-6_4_0-150700_7_19-rt-2-150700.2.1.x86_64"]},"references":[{"category":"external","summary":"CVE-2025-40204","url":"https://www.suse.com/security/cve/CVE-2025-40204"},{"category":"external","summary":"SUSE Bug 1253436 for CVE-2025-40204","url":"https://bugzilla.suse.com/1253436"},{"category":"external","summary":"SUSE Bug 1253437 for CVE-2025-40204","url":"https://bugzilla.suse.com/1253437"}],"remediations":[{"category":"vendor_fix","details":"To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or \"zypper patch\".\n","product_ids":["SUSE Linux Enterprise Live Patching 15 SP7:kernel-livepatch-6_4_0-150700_7_19-rt-2-150700.2.1.x86_64"]}],"scores":[{"cvss_v3":{"baseScore":7.5,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","version":"3.1"},"products":["SUSE Linux Enterprise Live Patching 15 SP7:kernel-livepatch-6_4_0-150700_7_19-rt-2-150700.2.1.x86_64"]}],"threats":[{"category":"impact","date":"2026-01-19T16:04:33Z","details":"important"}],"title":"CVE-2025-40204"}]}