Security update for the Linux Kernel RT (Live Patch 4 for SLE 15 SP7) SUSE Patch security@suse.de SUSE Security Team SUSE-SU-2025:03648-1 Final 1 1 2025-10-18T10:33:43Z current 2025-10-18T10:33:43Z 2025-10-18T10:33:43Z cve-database/bin/generate-cvrf.pl 2017-02-24T01:00:00Z Security update for the Linux Kernel RT (Live Patch 4 for SLE 15 SP7) This update for the Linux Kernel 6.4.0-150700_7_16 fixes one issue. The following security issue was fixed: - CVE-2025-38678: netfilter: nf_tables: reject duplicate device on updates (bsc#1249534). The CVRF data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0). SUSE-2025-3648,SUSE-SLE-Module-Live-Patching-15-SP7-2025-3648 Copyright SUSE LLC under the Creative Commons License 4.0 with Attribution (CC-BY-4.0) https://www.suse.com/support/update/announcement/2025/suse-su-202503648-1/ Link for SUSE-SU-2025:03648-1 https://lists.suse.com/pipermail/sle-updates/2025-October/042209.html E-Mail link for SUSE-SU-2025:03648-1 https://www.suse.com/support/security/rating/ SUSE Security Ratings https://bugzilla.suse.com/1249534 SUSE Bug 1249534 https://www.suse.com/security/cve/CVE-2025-38678/ SUSE CVE CVE-2025-38678 page SUSE Linux Enterprise Live Patching 15 SP7 kernel-livepatch-6_4_0-150700_7_16-rt-2-150700.2.1 kernel-livepatch-6_4_0-150700_7_16-rt-2-150700.2.1 as a component of SUSE Linux Enterprise Live Patching 15 SP7 In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_tables: reject duplicate device on updates A chain/flowtable update with duplicated devices in the same batch is possible. Unfortunately, netdev event path only removes the first device that is found, leaving unregistered the hook of the duplicated device. Check if a duplicated device exists in the transaction batch, bail out with EEXIST in such case. WARNING is hit when unregistering the hook: [49042.221275] WARNING: CPU: 4 PID: 8425 at net/netfilter/core.c:340 nf_hook_entry_head+0xaa/0x150 [49042.221375] CPU: 4 UID: 0 PID: 8425 Comm: nft Tainted: G S 6.16.0+ #170 PREEMPT(full) [...] [49042.221382] RIP: 0010:nf_hook_entry_head+0xaa/0x150 CVE-2025-38678 SUSE Linux Enterprise Live Patching 15 SP7:kernel-livepatch-6_4_0-150700_7_16-rt-2-150700.2.1 important To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch". https://www.suse.com/support/update/announcement/2025/suse-su-202503648-1/ https://www.suse.com/security/cve/CVE-2025-38678.html CVE-2025-38678 https://bugzilla.suse.com/1249126 SUSE Bug 1249126 https://bugzilla.suse.com/1249534 SUSE Bug 1249534