CVEvulnerability
CVE-2026-90143
7.8 HIGH
Official page ↗
- Status
- Received
- Published
- 2026-09-17
- Last modified
- 2026-10-19
- Assigner
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
- CVSS 3.1 (416baaa9-dc9f-4396-8d5f-8c081fb06d67)
- 7.8 HIGH — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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.
References
- https://git.kernel.org/stable/c/1d26a6e007d46babc7fa76e5a157dccf86cd55c0 git.kernel.org
- https://git.kernel.org/stable/c/21526f8a191a3c50622b8c10bd927870d780eae4 git.kernel.org
- https://git.kernel.org/stable/c/292846223eaddba890e40699d2ab82ee5671798c git.kernel.org
- https://git.kernel.org/stable/c/37108861cf7bd909d4a372069bcd61c8f489e232 git.kernel.org
- https://git.kernel.org/stable/c/3c70d27e792a28bca650ddd8a9aa0fe3591ffec5 git.kernel.org
- https://git.kernel.org/stable/c/b0346dd64e4905291cc9c479f2e6cf1884ced4e6 git.kernel.org
- https://git.kernel.org/stable/c/b0e94ea63dbdcbfec9beb819cd5f8fa584809ef2 git.kernel.org
- https://git.kernel.org/stable/c/f392affef3c9ce64dfdde794df0579e0a7793440 git.kernel.org