- —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: bpf: Reject negative optlen in cgroup getsockopt hook A cgroup getsockopt BPF program can shrink ctx->optlen after the kernel getsockopt handler has run. The kernel-buffer variant, used by TCP_ZEROCOPY_RECEIVE, only rejects values larger than the original length. If BPF writes a negative optlen, that value is accepted and propagated back to the TCP getsockopt code. It can then be passed to copy_to_sockptr() as a size_t and trigger the hardened usercopy bytes > INT_MAX warning. Reject negative ctx.optlen in __cgroup_bpf_run_filter_getsockopt_kern(), matching the lower-bound validation already present in the sockptr-based getsockopt hook.
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 (11 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Not scored.
Affected products
- affected 08f61a34913558e06576e7b6318bf583f273c1be – < 5b09d984b38b018b123c3a9e02a96bbc6468dbe5
- affected 9cacf81f8161111db25f98e78a7a0e32ae142b3f – < 554ba7195c4108726450e24480c8449990c2268c
- affected 9cacf81f8161111db25f98e78a7a0e32ae142b3f – < d02a12b4085ffe41ea750b1007f7a9c7aee2875a
- affected 9cacf81f8161111db25f98e78a7a0e32ae142b3f – < e6fbf0eba87f50084d67508898f6ad6fc7ff1ba2
- affected 9cacf81f8161111db25f98e78a7a0e32ae142b3f – < f68671b1a98d426c57864bd457c125fee14ac1a5
- affected 9cacf81f8161111db25f98e78a7a0e32ae142b3f – < 2bdbe00454200fcb0110f31eeca8d906a3515e74
- affected 9cacf81f8161111db25f98e78a7a0e32ae142b3f – < 31a89af4f513d750fec196e2bb6195a7d4473e9f
- affected 9cacf81f8161111db25f98e78a7a0e32ae142b3f – < 1b5aacd5b2419b0790e955e466d389a61c79b4b1
- affected 5.10.188 – < 5.10.270
- affected 5.12
- unaffected < 5.12
- 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/5b09d984b38b018b123c3a9e02a96bbc6468dbe5 (opens in a new tab)
- https://git.kernel.org/stable/c/554ba7195c4108726450e24480c8449990c2268c (opens in a new tab)
- https://git.kernel.org/stable/c/d02a12b4085ffe41ea750b1007f7a9c7aee2875a (opens in a new tab)
- https://git.kernel.org/stable/c/e6fbf0eba87f50084d67508898f6ad6fc7ff1ba2 (opens in a new tab)
- https://git.kernel.org/stable/c/f68671b1a98d426c57864bd457c125fee14ac1a5 (opens in a new tab)
- https://git.kernel.org/stable/c/2bdbe00454200fcb0110f31eeca8d906a3515e74 (opens in a new tab)
- https://git.kernel.org/stable/c/31a89af4f513d750fec196e2bb6195a7d4473e9f (opens in a new tab)
- https://git.kernel.org/stable/c/1b5aacd5b2419b0790e955e466d389a61c79b4b1 (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-2026-81750 (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-2026-90157)Record last updated .