CVE-2026-43099
Description
In the Linux kernel, the following vulnerability has been resolved:
ipv4: icmp: fix null-ptr-deref in icmp_build_probe()
ipv6_stub->ipv6_dev_find() may return ERR_PTR(-EAFNOSUPPORT) when the IPv6 stack is not active (CONFIG_IPV6=m and not loaded), and passing this error pointer to dev_hold() will cause a kernel crash with null-ptr-deref.
Instead, silently discard the request. RFC 8335 does not appear to define a specific response for the case where an IPv6 interface identifier is syntactically valid but the implementation cannot perform the lookup at runtime, and silently dropping the request may safer than misreporting "No Such Interface".
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
15cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*+ 8 more
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*range: >=5.13,<6.6.136
- 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-6.18pkg:apk/chainguard/linux-azure-6.18pkg:apk/chainguard/linux-gcp-6.18pkg:apk/chainguard/linux-qemu-6.18pkg:apk/chainguard/linux-qemu-6.18-bootc-boot-installedpkg:apk/chainguard/linux-vmware-6.18
< 6.18.31-r0+ 5 more
- (no CPE)range: < 6.18.31-r0
- (no CPE)range: < 6.18.31-r0
- (no CPE)range: < 6.18.31-r0
- (no CPE)range: < 6.18.31-r0
- (no CPE)range: < 6.18.31-r0
- (no CPE)range: < 6.18.31-r0
Patches
Vulnerability mechanics
References
7- git.kernel.org/stable/c/47a8bf52156ac7e7a581eca31c1f964ba4258d4dnvdPatch
- git.kernel.org/stable/c/5b9911582d441f72fe6ccb15ffe3303bbc07f6f5nvdPatch
- git.kernel.org/stable/c/6be325206850a0891896d38bcf83a09d8b54ec48nvdPatch
- git.kernel.org/stable/c/f91b3ed9e7fa82a70511b5f6901c88379acf2964nvdPatch
- git.kernel.org/stable/c/fde29fd9349327acc50d19a0b5f3d5a6c964dfd8nvdPatch
- git.kernel.org/stable/c/0f21bc261e60f0c696c58841c4873ff77ed83673nvd
- git.kernel.org/stable/c/dc5db4db19766a61ad65d81d1f55b1c1e51ba78dnvd
News mentions
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