CVE-2026-90327phonet: pep: do not write beyond optlen in getsockopt
- —Not scoredno CVSS score yet
- 0.22%Exploitation in 30 daysEPSS · top 88% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
In the Linux kernel, the following vulnerability has been resolved: phonet: pep: do not write beyond optlen in getsockopt pep_getsockopt() clamps the reported length to the caller's buffer with min_t(), but then stores the value with put_user(val, (int __user *) optval), which always writes sizeof(int) bytes. A getsockopt() call with an optlen smaller than sizeof(int) thus reports the clamped length yet writes a full int, one to three bytes past the user buffer. Write the value with copy_to_user() bounded by len, so at most optlen bytes are copied, matching the length reported back to userspace.
Timeline
ID reserved
By Linux
- 6 days later
· 6 days later
Published
- 32 days later
· 32 days later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
No CVSS score yet: neither the CNA, CISA nor NVD has scored this CVE. NVD status: Received.
- EPSS (exploitation in 30 days)
- 0.22% · top 88% of all CVEs (13 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Not scored.
Affected products
- affected 02a47617cdce440f60c71a51f3a93f9f5fcc5a7a – < 6054fed6bad08b6d03973e8ffca7f0c9394d1c30
- affected 02a47617cdce440f60c71a51f3a93f9f5fcc5a7a – < eac733a0b6fe0a52d91f9f623425735ed50ac6c2
- affected 02a47617cdce440f60c71a51f3a93f9f5fcc5a7a – < 95e0ed2439dd1792eb454c68ae8d10f30ffe3bff
- affected 02a47617cdce440f60c71a51f3a93f9f5fcc5a7a – < 056eea1a2068ad2fb7c3093c5f1095268f87d0c7
- affected 02a47617cdce440f60c71a51f3a93f9f5fcc5a7a – < 1bf499e438da80455e258049bce60ffb3a53f3fa
- affected 02a47617cdce440f60c71a51f3a93f9f5fcc5a7a – < c4487e4d5309de587479ecc2f5173b49586f46f4
- affected 02a47617cdce440f60c71a51f3a93f9f5fcc5a7a – < f97022fefe6eb06ee18549d603420440f2959802
- affected 02a47617cdce440f60c71a51f3a93f9f5fcc5a7a – < 77e5eb0e192aec6710c03ca8144582fd2af36ca4
- affected 2.6.28
- unaffected < 2.6.28
- unaffected 5.10.270 – ≤ 5.10.*
- unaffected 5.15.221 – ≤ 5.15.*
- unaffected 6.1.188 – ≤ 6.1.*
- unaffected 6.6.157 – ≤ 6.6.*
- unaffected 6.12.110 – ≤ 6.12.*
- unaffected 6.18.52 – ≤ 6.18.*
- unaffected 7.2.6 – ≤ 7.2.*
- unaffected 7.3 – ≤ *
References
References8
- https://git.kernel.org/stable/c/6054fed6bad08b6d03973e8ffca7f0c9394d1c30 (opens in a new tab)
- https://git.kernel.org/stable/c/eac733a0b6fe0a52d91f9f623425735ed50ac6c2 (opens in a new tab)
- https://git.kernel.org/stable/c/95e0ed2439dd1792eb454c68ae8d10f30ffe3bff (opens in a new tab)
- https://git.kernel.org/stable/c/056eea1a2068ad2fb7c3093c5f1095268f87d0c7 (opens in a new tab)
- https://git.kernel.org/stable/c/1bf499e438da80455e258049bce60ffb3a53f3fa (opens in a new tab)
- https://git.kernel.org/stable/c/c4487e4d5309de587479ecc2f5173b49586f46f4 (opens in a new tab)
- https://git.kernel.org/stable/c/f97022fefe6eb06ee18549d603420440f2959802 (opens in a new tab)
- https://git.kernel.org/stable/c/77e5eb0e192aec6710c03ca8144582fd2af36ca4 (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-81988 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-90327)Record last updated .