Stay Secure with the Latest Linux Advisories

security advisorysecurity issueSuSE

SUSE Linux 15 SP4 Kernel Protection Update covering CVE-2023-23456

An update that solves three vulnerabilities and has one security fix can now be installed.. # Security update for the Linux Kernel (Live Patch 66 for SUSE Linux Enterprise 12 SP5) Announcement ID: SUSE-SU-2026:0515-1 Release Date: 2026-02-13T23:04:16Z Rating: important References: * bsc#1249205 * bsc#1250280 * bsc#1250314 * bsc#1253439 Cross-References: * CVE-2023-53321 * CVE-2025-38352 * CVE-2025-40186 CVSS scores: * CVE-2023-53321 ( SUSE ): 7.3 CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N * CVE-2023-53321 ( SUSE ): 7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H * CVE-2023-53321 ( NVD ): 7.1 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H * CVE-2023-53321 ( NVD ): 7.1 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H * CVE-2025-38352 ( SUSE ): 7.3 CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N * CVE-2025-38352 ( SUSE ): 7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H * CVE-2025-38352 ( NVD ): 7.4 CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H * CVE-2025-40186 ( SUSE ): 7.3 CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N * CVE-2025-40186 ( SUSE ): 7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H Affected Products: * SUSE Linux Enterprise High Performance Computing 12 SP5 * SUSE Linux Enterprise Live Patching 12-SP5 * SUSE Linux Enterprise Server 12 SP5 * SUSE Linux Enterprise Server for SAP Applications 12 SP5 An update that solves three vulnerabilities and has one security fix can now be installed. ## Description: This update for the SUSE Linux Enterprise kernel 4.12.14-122.250 fixes various security issues The following security issues were fixed: * CVE-2023-53321: wifi: mac80211_hwsim: drop short frames (bsc#1250314). * CVE-2025-38352: posix-cpu-timers: fix race between handle_posix_cpu_timers() and posix_cpu_timer_del() (bsc#1249205). * CVE-2025-40186: tcp: Don't call reqsk_fastopen_remove() in tcp_conn_request() (bsc#1253439). The following nonsecurity issue was fixed: * bsc#1250280: don't expose {file,inode}_operations with static lifetimes Fix issue with static lifetime empty_iops/no_open_fops by allocating them on the heap. Make sure previously assigned instances don't become dangling. (bsc#1250280). ## Patch Instructions: To install this SUSE update use the SUSE recommended installation methods like YaST online_update or "zypper patch". Alternatively you can run the command listed for your product: * SUSE Linux Enterprise Live Patching 12-SP5 zypper in -t patch SUSE-SLE-Live-Patching-12-SP5-2026-515=1 SUSE-SLE-Live- Patching-12-SP5-2026-516=1 ## Package List: * SUSE Linux Enterprise Live Patching 12-SP5 (ppc64le s390x x86_64) * kgraft-patch-4_12_14-122_250-default-13-2.1 * kgraft-patch-4_12_14-122_247-default-13-2.1 ## References: * https://www.suse.com/security/cve/CVE-2023-53321.html * https://www.suse.com/security/cve/CVE-2025-38352.html * https://www.suse.com/security/cve/CVE-2025-40186.html * https://bugzilla.suse.com/show_bug.cgi?id=1249205 * https://bugzilla.suse.com/show_bug.cgi?id=1250280 * https://bugzilla.suse.com/show_bug.cgi?id=1250314 * https://bugzilla.suse.com/show_bug.cgi?id=1253439 . Update for SUSE Linux kernel fixes three issues with important severity; ensure systems are patched promptly.. SUSE Linux Patch, Kernel Security Fix, Important Security Update, Critical Patch Management, Linux Kernel Security. . Severity: Important. LinuxSecurity.com Team

Feb 16, 2026 •Important SuSE