Medium severity5.5NVD Advisory· Published Apr 3, 2026· Updated Jun 1, 2026
CVE-2026-23442
CVE-2026-23442
Description
In the Linux kernel, the following vulnerability has been resolved:
ipv6: add NULL checks for idev in SRv6 paths
__in6_dev_get() can return NULL when the device has no IPv6 configuration (e.g. MTU < IPV6_MIN_MTU or after NETDEV_UNREGISTER).
Add NULL checks for idev returned by __in6_dev_get() in both seg6_hmac_validate_skb() and ipv6_srh_rcv() to prevent potential NULL pointer dereferences.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
16cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*+ 9 more
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*range: >=4.10.1,<6.12.83
- cpe:2.3:o:linux:linux_kernel:4.10:-:*:*:*:*:*:*
- 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-coords6 versionspkg:apk/chainguard/linux-aws-6.12pkg:apk/chainguard/linux-azure-6.12pkg:apk/chainguard/linux-gcp-6.12pkg:apk/chainguard/linux-qemu-6.12pkg:apk/chainguard/linux-qemu-melangepkg:apk/chainguard/linux-vmware-6.12
< 6.12.85-r0+ 5 more
- (no CPE)range: < 6.12.85-r0
- (no CPE)range: < 6.12.85-r0
- (no CPE)range: < 6.12.85-r0
- (no CPE)range: < 6.12.85-r0
- (no CPE)range: < 0
- (no CPE)range: < 6.12.85-r0
Patches
Vulnerability mechanics
References
8- git.kernel.org/stable/c/06413793526251870e20402c39930804f14d59c0nvdPatch
- git.kernel.org/stable/c/a25853c9feea7bbf31d157ff6e004d2d3b4f7f13nvdPatch
- git.kernel.org/stable/c/bc9843c39f9932a8b36efd1d362ea00bb88e4e78nvdPatch
- git.kernel.org/stable/c/0348fa0ada37cef7c6b5ab2a428bb2c6aee784e4nvd
- git.kernel.org/stable/c/50352fc103928e10e8729abc79a0d05abef26c4dnvd
- git.kernel.org/stable/c/83d705d35e583cb1b1eacf196dfe7b77d442018envd
- git.kernel.org/stable/c/c5cedee5d97382176573bbe21e1724e737a5eb64nvd
- git.kernel.org/stable/c/d1bd8b9edc6752d10f84d28ff64f842401ce336dnvd
News mentions
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