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.
Metrics
CVSS 3.1 7.8/10
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HAffected software
Source: the vendor's advisory (CNA). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | >= 9b73896a81dc68a638a011877b7344b252f92276, < 37108861cf7bd909d4a372069bcd61c8f489e232; >= 9b73896a81dc68a638a011877b7344b252f92276, < 3c70d27e792a28bca650ddd8a9aa0fe3591ffec5; >= 9b73896a81dc68a638a011877b7344b252f92276, < 1d26a6e007d46babc7fa76e5a157dccf86cd55c0; >= 9b73896a81dc68a638a011877b7344b252f92276, < b0e94ea63dbdcbfec9beb819cd5f8fa584809ef2; >= 9b73896a81dc68a638a011877b7344b252f92276, < 21526f8a191a3c50622b8c10bd927870d780eae4; >= 9b73896a81dc68a638a011877b7344b252f92276, < 292846223eaddba890e40699d2ab82ee5671798c; >= 9b73896a81dc68a638a011877b7344b252f92276, < f392affef3c9ce64dfdde794df0579e0a7793440; >= 9b73896a81dc68a638a011877b7344b252f92276, < b0346dd64e4905291cc9c479f2e6cf1884ced4e6 |
| Linux | Linux | 4.9 |
References
- https://git.kernel.org/stable/c/1d26a6e007d46babc7fa76e5a157dccf86cd55c0
- https://git.kernel.org/stable/c/21526f8a191a3c50622b8c10bd927870d780eae4
- https://git.kernel.org/stable/c/292846223eaddba890e40699d2ab82ee5671798c
- https://git.kernel.org/stable/c/37108861cf7bd909d4a372069bcd61c8f489e232
- https://git.kernel.org/stable/c/3c70d27e792a28bca650ddd8a9aa0fe3591ffec5
- https://git.kernel.org/stable/c/b0346dd64e4905291cc9c479f2e6cf1884ced4e6
- https://git.kernel.org/stable/c/b0e94ea63dbdcbfec9beb819cd5f8fa584809ef2
- https://git.kernel.org/stable/c/f392affef3c9ce64dfdde794df0579e0a7793440
Timeline
- Published
- Sep 17, 2026
- Last modified
- Oct 19, 2026
- NVD status
- Received