CVE-2026-90143net: kcm: Hold RCU read lock while running BPF parser
- 7.8HighCVSS base score
- 0.16%Exploitation in 30 daysEPSS · top 94% 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: net: kcm: Hold RCU read lock while running BPF parser kcm_parse_func_strparser() calls bpf_prog_run_pin_on_cpu() which prevents CPU migration, but does not establish an RCU read-side critical section. Consequently, BPF map operations can trigger WARN_ON_ONCE(!bpf_rcu_lock_held()) when called from the KCM strparser program. Hold the RCU read lock while running the program.
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
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| LinuxCNA (assigner) | 3.1 | High7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVDNVD · Received | 3.1 | High7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 0.16% · top 94% of all CVEs (14 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.8.
Affected products
- affected 9b73896a81dc68a638a011877b7344b252f92276 – < 37108861cf7bd909d4a372069bcd61c8f489e232
- affected 9b73896a81dc68a638a011877b7344b252f92276 – < 3c70d27e792a28bca650ddd8a9aa0fe3591ffec5
- affected 9b73896a81dc68a638a011877b7344b252f92276 – < 1d26a6e007d46babc7fa76e5a157dccf86cd55c0
- affected 9b73896a81dc68a638a011877b7344b252f92276 – < b0e94ea63dbdcbfec9beb819cd5f8fa584809ef2
- affected 9b73896a81dc68a638a011877b7344b252f92276 – < 21526f8a191a3c50622b8c10bd927870d780eae4
- affected 9b73896a81dc68a638a011877b7344b252f92276 – < 292846223eaddba890e40699d2ab82ee5671798c
- affected 9b73896a81dc68a638a011877b7344b252f92276 – < f392affef3c9ce64dfdde794df0579e0a7793440
- affected 9b73896a81dc68a638a011877b7344b252f92276 – < b0346dd64e4905291cc9c479f2e6cf1884ced4e6
- affected 4.9
- unaffected < 4.9
- 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/37108861cf7bd909d4a372069bcd61c8f489e232 (opens in a new tab)
- https://git.kernel.org/stable/c/3c70d27e792a28bca650ddd8a9aa0fe3591ffec5 (opens in a new tab)
- https://git.kernel.org/stable/c/1d26a6e007d46babc7fa76e5a157dccf86cd55c0 (opens in a new tab)
- https://git.kernel.org/stable/c/b0e94ea63dbdcbfec9beb819cd5f8fa584809ef2 (opens in a new tab)
- https://git.kernel.org/stable/c/21526f8a191a3c50622b8c10bd927870d780eae4 (opens in a new tab)
- https://git.kernel.org/stable/c/292846223eaddba890e40699d2ab82ee5671798c (opens in a new tab)
- https://git.kernel.org/stable/c/f392affef3c9ce64dfdde794df0579e0a7793440 (opens in a new tab)
- https://git.kernel.org/stable/c/b0346dd64e4905291cc9c479f2e6cf1884ced4e6 (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-2026-81736 (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-2026-90143)Record last updated .