High severity7.8NVD Advisory· Published Apr 2, 2026· Updated Apr 27, 2026
CVE-2026-23412
CVE-2026-23412
Description
In the Linux kernel, the following vulnerability has been resolved:
netfilter: bpf: defer hook memory release until rcu readers are done
Yiming Qian reports UaF when concurrent process is dumping hooks via nfnetlink_hooks:
BUG: KASAN: slab-use-after-free in nfnl_hook_dump_one.isra.0+0xe71/0x10f0 Read of size 8 at addr ffff888003edbf88 by task poc/79 Call Trace:
nfnl_hook_dump_one.isra.0+0xe71/0x10f0 netlink_dump+0x554/0x12b0 nfnl_hook_get+0x176/0x230 [..]
Defer release until after concurrent readers have completed.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
20cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*+ 9 more
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*range: >=6.4.1,<6.6.130
- cpe:2.3:o:linux:linux_kernel:6.4:-:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:7.0:rc1:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:7.0:rc2:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:7.0:rc3:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:7.0:rc4:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:7.0:rc5:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:7.0:rc6:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:7.0:rc7:*:*:*:*:*:*
- (no CPE)
- osv-coords10 versionspkg:rpm/suse/kernel-default-base&distro=SUSE%20Linux%20Micro%206.0pkg:rpm/suse/kernel-default-base&distro=SUSE%20Linux%20Micro%206.1pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Micro%206.0pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Micro%206.1pkg:rpm/suse/kernel-kvmsmall&distro=SUSE%20Linux%20Micro%206.0pkg:rpm/suse/kernel-kvmsmall&distro=SUSE%20Linux%20Micro%206.1pkg:rpm/suse/kernel-rt&distro=SUSE%20Linux%20Micro%206.1pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Micro%206.0pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Micro%206.1pkg:rpm/suse/kernel-source-rt&distro=SUSE%20Linux%20Micro%206.1
< 6.4.0-41.1.21.18+ 9 more
- (no CPE)range: < 6.4.0-41.1.21.18
- (no CPE)range: < 6.4.0-41.1.21.18
- (no CPE)range: < 6.4.0-41.1
- (no CPE)range: < 6.4.0-41.1
- (no CPE)range: < 6.4.0-41.1
- (no CPE)range: < 6.4.0-41.1
- (no CPE)range: < 6.4.0-41.1
- (no CPE)range: < 6.4.0-41.1
- (no CPE)range: < 6.4.0-41.1
- (no CPE)range: < 6.4.0-41.1
Patches
Vulnerability mechanics
References
5- git.kernel.org/stable/c/24f90fa3994b992d1a09003a3db2599330a5232anvdPatch
- git.kernel.org/stable/c/54244d54a971c26a0cd0a9073460ff71f3c51b32nvdPatch
- git.kernel.org/stable/c/c25e0dec366ae99b7264324ce3c7cbaea34691f9nvdPatch
- git.kernel.org/stable/c/cb2bf5efdb02a2a59faf603604a1066e8266f349nvdPatch
- git.kernel.org/stable/c/d016c216bc75c45128160593a77b864a04dbe7c0nvdPatch
News mentions
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