CVE-2026-31752: Linux vulnerability

CVE-2026-31752: bridge: br_nd_send: validate ND option lengths

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.

UnknownCVSS not scoredNot KEV-listedUpdatedOct 15, 2026, 01:18 UTC (UTC+00:00)

Potential ATT&CK relevance

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Vulnerability profileCVE Program record

Severity: Unknown
CVSS: Not scored
Known Exploited: No
Published: May 1, 2026, 14:14 UTC (UTC+00:00)

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors

3Timeline events

1ADP providers

12Source links

Vulnerability timeline

Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.

CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
Mar 9, 2026, 15:48 UTC (UTC+00:00)
CVE publishedCVE Program
The CVE record was published.
May 1, 2026, 14:14 UTC (UTC+00:00)
CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
Oct 15, 2026, 01:18 UTC (UTC+00:00)

ADP provider summaries

Source materials

CVE List V5 sourceCVE List V5
https://git.kernel.org/stable/c/82a42eceec7c6bdb0e0da94c0542a173b7ea57f2CVE reference, Linux
https://git.kernel.org/stable/c/259466f76f5a2148aff11134e68f4b4c6d52725bCVE reference, Linux
https://git.kernel.org/stable/c/ee02d8991fd7bd86ed6ebd0deb4aab53feb0e43aCVE reference, Linux
https://git.kernel.org/stable/c/e0bfd6d4dc77ab345b6c65eef0cfe9b2f69085aaCVE reference, Linux
https://git.kernel.org/stable/c/c49b9256bbacb6a135654aebd12e4c0e87166b7cCVE reference, Linux
https://git.kernel.org/stable/c/837392a38445729c22e03d3abcf33f07763efd85CVE reference, Linux
https://git.kernel.org/stable/c/e71303a9190496136e240c4f2872b7b0b16027a7CVE reference, Linux
https://git.kernel.org/stable/c/850837965af15707fd3142c1cf3c5bfaf022299bCVE reference, Linux
https://cert-portal.siemens.com/productcert/html/ssa-082556.htmlCVE reference, siemens-SADP
https://cert-portal.siemens.com/productcert/html/ssa-019113.htmlCVE reference, siemens-SADP
https://cert-portal.siemens.com/productcert/html/ssa-457936.htmlCVE reference, siemens-SADP

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus

LinuxLinuxed842faeb2bd49256f00485402f3113205f91d30, ed842faeb2bd49256f00485402f3113205f91d30, ed842faeb2bd49256f00485402f3113205f91d30, ed842faeb2bd49256f00485402f3113205f91d30, ed842faeb2bd49256f00485402f3113205f91d30, ed842faeb2bd49256f00485402f3113205f91d30, ed842faeb2bd49256f00485402f3113205f91d30, ed842faeb2bd49256f00485402f3113205f91d30unaffected

LinuxLinux4.15, 0, 5.10.253, 5.15.203, 6.1.168, 6.6.134, 6.12.81, 6.18.22, 6.19.12, 7.0affected

Weakness

CWE details

No CWE listed

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