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Description

In the Linux kernel, the following vulnerability has been resolved: vxlan: validate ND option lengths in vxlan_na_create vxlan_na_create() 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.

PUBLISHED Reserved 2026-03-09 | Published 2026-05-01 | Updated 2026-05-01 | Assigner Linux

Product status

Default status
unaffected

4b29dba9c085a4fb79058fb1c45a2f6257ca3dfa (git) before 901c1dd3bab2955d7e664f914c374c8c3ac2b958
affected

4b29dba9c085a4fb79058fb1c45a2f6257ca3dfa (git) before e476745917a1e288eb15e7ff49d286a86a4861d3
affected

4b29dba9c085a4fb79058fb1c45a2f6257ca3dfa (git) before 2029712fb2c87e9a8c75094906f2ee29bf08c500
affected

4b29dba9c085a4fb79058fb1c45a2f6257ca3dfa (git) before 602596c69a70e50d9ab8c6ae0290a01f88229dd7
affected

4b29dba9c085a4fb79058fb1c45a2f6257ca3dfa (git) before de20d2e3b9179d132f5f5b44e490d7c916c6321b
affected

4b29dba9c085a4fb79058fb1c45a2f6257ca3dfa (git) before eddfce70a6f3107d1679b0c2fcbeb96b593bd679
affected

4b29dba9c085a4fb79058fb1c45a2f6257ca3dfa (git) before b69c4236255bd8de16cd876e58c6f0867d1d78b1
affected

4b29dba9c085a4fb79058fb1c45a2f6257ca3dfa (git) before afa9a05e6c4971bd5586f1b304e14d61fb3d9385
affected

d8be18c52dbc94989f6d74637b731af39cd3d902 (git)
affected

3927dace523706cc00f808520eaf2125dd7c07b5 (git)
affected

Default status
affected

3.14
affected

Any version before 3.14
unaffected

5.10.253 (semver)
unaffected

5.15.203 (semver)
unaffected

6.1.168 (semver)
unaffected

6.6.134 (semver)
unaffected

6.12.81 (semver)
unaffected

6.18.22 (semver)
unaffected

6.19.12 (semver)
unaffected

7.0 (original_commit_for_fix)
unaffected

References

git.kernel.org/...c/901c1dd3bab2955d7e664f914c374c8c3ac2b958

git.kernel.org/...c/e476745917a1e288eb15e7ff49d286a86a4861d3

git.kernel.org/...c/2029712fb2c87e9a8c75094906f2ee29bf08c500

git.kernel.org/...c/602596c69a70e50d9ab8c6ae0290a01f88229dd7

git.kernel.org/...c/de20d2e3b9179d132f5f5b44e490d7c916c6321b

git.kernel.org/...c/eddfce70a6f3107d1679b0c2fcbeb96b593bd679

git.kernel.org/...c/b69c4236255bd8de16cd876e58c6f0867d1d78b1

git.kernel.org/...c/afa9a05e6c4971bd5586f1b304e14d61fb3d9385

cve.org (CVE-2026-31738)

nvd.nist.gov (CVE-2026-31738)

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