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openSUSE Kernel Important Heap Overflow Fix 2026-2520-1

An update that solves five vulnerabilities and has one security fix can now be installed.. # Security update for the Linux Kernel (Live Patch 13 for SUSE Linux Enterprise 15 SP7) Announcement ID: SUSE-SU-2026:2520-1 Release Date: 2026-06-23T07:34:15Z Rating: important References: * bsc#1261640 * bsc#1263088 * bsc#1263902 * bsc#1266229 * bsc#1267625 * bsc#1268282 Cross-References: * CVE-2026-31402 * CVE-2026-31504 * CVE-2026-31694 * CVE-2026-43503 * CVE-2026-46323 CVSS scores: * CVE-2026-31402 ( SUSE ): 8.8 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N * CVE-2026-31402 ( SUSE ): 8.2 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H * CVE-2026-31402 ( NVD ): 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H * CVE-2026-31504 ( 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-2026-31504 ( SUSE ): 7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H * CVE-2026-31504 ( NVD ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H * CVE-2026-31694 ( 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-2026-31694 ( SUSE ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H * CVE-2026-31694 ( NVD ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H * CVE-2026-43503 ( 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-2026-43503 ( SUSE ): 8.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H * CVE-2026-43503 ( NVD ): 8.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H * CVE-2026-46323 ( SUSE ): 7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H * CVE-2026-46323 ( NVD ): 7.8 CVSS:3.1/AV:L/AC:L/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 Live Patching 15-SP7 * SUSE Linux Enterprise Real Time 15 SP6 * SUSE Linux Enterprise Real Time 15 SP7 * SUSE Linux Enterprise Server 15 SP6 * SUSE Linux Enterprise Server 15 SP7 * SUSE LinuxEnterprise Server for SAP Applications 15 SP6 * SUSE Linux Enterprise Server for SAP Applications 15 SP7 An update that solves five vulnerabilities and has one security fix can now be installed. ## Description: This update for the SUSE Linux Enterprise Kernel 6.4.0-150700.53.45 fixes various security issues The following security issues were fixed: * CVE-2026-31402: nfsd: fix heap overflow in NFSv4.0 LOCK replay cache (bsc#1261640). * CVE-2026-31504: net: fix fanout UAF in packet_release() via NETDEV_UP race (bsc#1263088). * CVE-2026-31694: fuse: reject oversized dirents in page cache (bsc#1263902). * CVE-2026-43503: final dirty.frag related fixes (bsc#1266229). * CVE-2026-46323: net: gro: don't merge zcopy skbs (bsc#1268282). * net/sched: fix pedit partial COW leading to page cache (bsc#1267625). ## 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 15-SP7 zypper in -t patch SUSE-SLE-Module-Live-Patching-15-SP7-2026-2521=1 SUSE-SLE- Module-Live-Patching-15-SP7-2026-2522=1 SUSE-SLE-Module-Live- Patching-15-SP7-2026-2509=1 SUSE-SLE-Module-Live-Patching-15-SP7-2026-2508=1 * SUSE Linux Enterprise Live Patching 15-SP6 zypper in -t patch SUSE-SLE-Module-Live-Patching-15-SP6-2026-2520=1 * openSUSE Leap 15.6 zypper in -t patch SUSE-2026-2520=1 ## Package List: * SUSE Linux Enterprise Live Patching 15-SP6 (ppc64le s390x x86_64) * kernel-livepatch-SLE15-SP6_Update_22-debugsource-5-150600.2.1 * kernel-livepatch-6_4_0-150600_23_95-default-debuginfo-5-150600.2.1 * kernel-livepatch-6_4_0-150600_23_95-default-5-150600.2.1 * openSUSE Leap 15.6 (ppc64le s390x x86_64) * kernel-livepatch-SLE15-SP6_Update_22-debugsource-5-150600.2.1 * kernel-livepatch-6_4_0-150600_23_95-default-debuginfo-5-150600.2.1 *kernel-livepatch-6_4_0-150600_23_95-default-5-150600.2.1 * SUSE Linux Enterprise Live Patching 15-SP7 (ppc64le s390x x86_64) * kernel-livepatch-SLE15-SP7_Update_11-debugsource-5-150700.2.1 * kernel-livepatch-6_4_0-150700_53_40-default-debuginfo-4-150700.2.1 * kernel-livepatch-SLE15-SP7_Update_13-debugsource-3-150700.2.1 * kernel-livepatch-SLE15-SP7_Update_12-debugsource-4-150700.2.1 * kernel-livepatch-6_4_0-150700_53_40-default-4-150700.2.1 * kernel-livepatch-6_4_0-150700_53_45-default-debuginfo-3-150700.2.1 * kernel-livepatch-6_4_0-150700_53_37-default-debuginfo-5-150700.2.1 * kernel-livepatch-6_4_0-150700_53_37-default-5-150700.2.1 * kernel-livepatch-6_4_0-150700_53_45-default-3-150700.2.1 * SUSE Linux Enterprise Live Patching 15-SP7 (x86_64) * kernel-livepatch-6_4_0-150700_7_44-rt-debuginfo-3-150700.2.1 * kernel-livepatch-SLE15-SP7-RT_Update_13-debugsource-3-150700.2.1 * kernel-livepatch-6_4_0-150700_7_44-rt-3-150700.2.1 ## References: * https://www.suse.com/security/cve/CVE-2026-31402.html * https://www.suse.com/security/cve/CVE-2026-31504.html * https://www.suse.com/security/cve/CVE-2026-31694.html * https://www.suse.com/security/cve/CVE-2026-43503.html * https://www.suse.com/security/cve/CVE-2026-46323.html * https://bugzilla.suse.com/show_bug.cgi?id=1261640 * https://bugzilla.suse.com/show_bug.cgi?id=1263088 * https://bugzilla.suse.com/show_bug.cgi?id=1263902 * https://bugzilla.suse.com/show_bug.cgi?id=1266229 * https://bugzilla.suse.com/show_bug.cgi?id=1267625 * https://bugzilla.suse.com/show_bug.cgi?id=1268282 . This update addresses critical kernel security issues in openSUSE fixing five vulnerabilities effectively. Stay protected!. openSUSE kernel update security important patch. . Severity: Important. LinuxSecurity.com Team

Jun 23, 2026 •Important OpenSUSE