Security update for the Linux Kernel (Live Patch 62 for SLE 12 SP5) SUSE Patch security@suse.de SUSE Security Team SUSE-SU-2025:0414-1 Final 1 1 2025-02-11T03:33:33Z current 2025-02-11T03:33:33Z 2025-02-11T03:33:33Z cve-database/bin/generate-cvrf.pl 2017-02-24T01:00:00Z Security update for the Linux Kernel (Live Patch 62 for SLE 12 SP5) This update for the Linux Kernel 4.12.14-122_234 fixes one issue. The following security issue was fixed: - CVE-2024-45016: netem: fix return value if duplicate enqueue fails (bsc#1230998). The CVRF data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0). SUSE-2025-414,SUSE-SLE-Live-Patching-12-SP5-2025-414 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-20250414-1/ Link for SUSE-SU-2025:0414-1 https://lists.suse.com/pipermail/sle-security-updates/2025-February/020308.html E-Mail link for SUSE-SU-2025:0414-1 https://www.suse.com/support/security/rating/ SUSE Security Ratings https://bugzilla.suse.com/1230998 SUSE Bug 1230998 https://www.suse.com/security/cve/CVE-2024-45016/ SUSE CVE CVE-2024-45016 page SUSE Linux Enterprise Live Patching 12 SP5 kgraft-patch-4_12_14-122_234-default-3-2.1 kgraft-patch-4_12_14-122_234-default-3-2.1 as a component of SUSE Linux Enterprise Live Patching 12 SP5 In the Linux kernel, the following vulnerability has been resolved: netem: fix return value if duplicate enqueue fails There is a bug in netem_enqueue() introduced by commit 5845f706388a ("net: netem: fix skb length BUG_ON in __skb_to_sgvec") that can lead to a use-after-free. This commit made netem_enqueue() always return NET_XMIT_SUCCESS when a packet is duplicated, which can cause the parent qdisc's q.qlen to be mistakenly incremented. When this happens qlen_notify() may be skipped on the parent during destruction, leaving a dangling pointer for some classful qdiscs like DRR. There are two ways for the bug happen: - If the duplicated packet is dropped by rootq->enqueue() and then the original packet is also dropped. - If rootq->enqueue() sends the duplicated packet to a different qdisc and the original packet is dropped. In both cases NET_XMIT_SUCCESS is returned even though no packets are enqueued at the netem qdisc. The fix is to defer the enqueue of the duplicate packet until after the original packet has been guaranteed to return NET_XMIT_SUCCESS. CVE-2024-45016 SUSE Linux Enterprise Live Patching 12 SP5:kgraft-patch-4_12_14-122_234-default-3-2.1 moderate 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-20250414-1/ https://www.suse.com/security/cve/CVE-2024-45016.html CVE-2024-45016 https://bugzilla.suse.com/1230429 SUSE Bug 1230429 https://bugzilla.suse.com/1230998 SUSE Bug 1230998