Stay Secure with the Latest Linux Advisories

security advisorySuSEDoS

SUSE: Kernel Security Update Important CVE-2025-21692 DoS 2025:03569-1

* bsc#1237048 * bsc#1240744 * bsc#1245509 * bsc#1247315 . # Security update for the Linux Kernel (Live Patch 8 for SLE 15 SP6) Announcement ID: SUSE-SU-2025:03569-1 Release Date: 2025-10-12T10:04:13Z Rating: important References: * bsc#1237048 * bsc#1240744 * bsc#1245509 * bsc#1247315 Cross-References: * CVE-2025-21692 * CVE-2025-21791 * CVE-2025-38089 * CVE-2025-38477 CVSS scores: * CVE-2025-21692 ( SUSE ): 6.9 CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:H/SC:N/SI:N/SA:N * CVE-2025-21692 ( SUSE ): 7.1 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H * CVE-2025-21692 ( NVD ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H * CVE-2025-21692 ( NVD ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H * CVE-2025-21791 ( SUSE ): 8.5 CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N * CVE-2025-21791 ( SUSE ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H * CVE-2025-21791 ( NVD ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H * CVE-2025-21791 ( NVD ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H * CVE-2025-38089 ( SUSE ): 8.7 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N * CVE-2025-38089 ( SUSE ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H * CVE-2025-38477 ( 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-2025-38477 ( SUSE ): 7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H Affected Products: * openSUSE Leap 15.6 * SUSE Linux Enterprise Live Patching 15-SP6 * SUSE Linux Enterprise Real Time 15 SP6 * SUSE Linux Enterprise Server 15 SP6 * SUSE Linux Enterprise Server for SAP Applications 15 SP6 An update that solves four vulnerabilities can now be installed. ## Description: This update for the Linux Kernel 6.4.0-150600_23_38 fixes several issues. The following security issues were fixed: * CVE-2025-38477: net/sched: sch_qfq: Fix race condition on qfq_aggregate (bsc#1247315). * CVE-2025-21791: vrf: use RCU protection inl3mdev_l3_out() (bsc#1240744). * CVE-2025-38089: sunrpc: handle SVC_GARBAGE during svc auth processing as auth error (bsc#1245509). * CVE-2025-21692: net: sched: fix ets qdisc OOB Indexing (bsc#1237048). ## 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: * openSUSE Leap 15.6 zypper in -t patch SUSE-2025-3569=1 SUSE-2025-3570=1 * SUSE Linux Enterprise Live Patching 15-SP6 zypper in -t patch SUSE-SLE-Module-Live-Patching-15-SP6-2025-3569=1 SUSE-SLE- Module-Live-Patching-15-SP6-2025-3570=1 ## Package List: * openSUSE Leap 15.6 (ppc64le s390x x86_64) * kernel-livepatch-SLE15-SP6_Update_7-debugsource-13-150600.2.1 * kernel-livepatch-6_4_0-150600_23_38-default-8-150600.2.1 * kernel-livepatch-6_4_0-150600_23_38-default-debuginfo-8-150600.2.1 * kernel-livepatch-6_4_0-150600_23_33-default-13-150600.2.1 * kernel-livepatch-6_4_0-150600_23_33-default-debuginfo-13-150600.2.1 * kernel-livepatch-SLE15-SP6_Update_8-debugsource-8-150600.2.1 * SUSE Linux Enterprise Live Patching 15-SP6 (ppc64le s390x x86_64) * kernel-livepatch-SLE15-SP6_Update_7-debugsource-13-150600.2.1 * kernel-livepatch-6_4_0-150600_23_38-default-8-150600.2.1 * kernel-livepatch-6_4_0-150600_23_38-default-debuginfo-8-150600.2.1 * kernel-livepatch-6_4_0-150600_23_33-default-13-150600.2.1 * kernel-livepatch-6_4_0-150600_23_33-default-debuginfo-13-150600.2.1 * kernel-livepatch-SLE15-SP6_Update_8-debugsource-8-150600.2.1 ## References: * https://www.suse.com/security/cve/CVE-2025-21692.html * https://www.suse.com/security/cve/CVE-2025-21791.html * https://www.suse.com/security/cve/CVE-2025-38089.html * https://www.suse.com/security/cve/CVE-2025-38477.html * https://bugzilla.suse.com/show_bug.cgi?id=1237048 * https://bugzilla.suse.com/show_bug.cgi?id=1240744 * https://bugzilla.suse.com/show_bug.cgi?id=1245509 *https://bugzilla.suse.com/show_bug.cgi?id=1247315 . Critical update for SUSE Linux Kernel addresses multiple issues including memory protection flaws that require attention.. Linux Kernel Update, SUSE Security Patch, Kernel Vulnerabilities. . Severity: Important. LinuxSecurity.com Team

Oct 13, 2025 •Important SuSE