Medium severity5.5NVD Advisory· Published May 1, 2026· Updated May 7, 2026
CVE-2026-31752
CVE-2026-31752
Description
In the Linux kernel, the following vulnerability has been resolved:
bridge: br_nd_send: validate ND option lengths
br_nd_send() walks ND options according to option-provided lengths. A malformed option can make the parser advance beyond the computed option span or use a too-short source LLADDR option payload.
Validate option lengths against the remaining NS option area before advancing, and only read source LLADDR when the option is large enough for an Ethernet address.
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LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
7cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*+ 6 more
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*range: >=4.15,<5.10.253
- 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:*:*:*:*:*:*
Patches
Vulnerability mechanics
References
8- git.kernel.org/stable/c/259466f76f5a2148aff11134e68f4b4c6d52725bnvdPatch
- git.kernel.org/stable/c/82a42eceec7c6bdb0e0da94c0542a173b7ea57f2nvdPatch
- git.kernel.org/stable/c/837392a38445729c22e03d3abcf33f07763efd85nvdPatch
- git.kernel.org/stable/c/850837965af15707fd3142c1cf3c5bfaf022299bnvdPatch
- git.kernel.org/stable/c/c49b9256bbacb6a135654aebd12e4c0e87166b7cnvdPatch
- git.kernel.org/stable/c/e0bfd6d4dc77ab345b6c65eef0cfe9b2f69085aanvdPatch
- git.kernel.org/stable/c/e71303a9190496136e240c4f2872b7b0b16027a7nvdPatch
- git.kernel.org/stable/c/ee02d8991fd7bd86ed6ebd0deb4aab53feb0e43anvdPatch
News mentions
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