{"id":"CVE-2026-90143","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-90143","summary":"net: kcm: Hold RCU read lock while running BPF parser","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: kcm: Hold RCU read lock while running BPF parser\n\nkcm_parse_func_strparser() calls bpf_prog_run_pin_on_cpu() which\nprevents CPU migration, but does not establish an RCU read-side\ncritical section. Consequently, BPF map operations can trigger\nWARN_ON_ONCE(!bpf_rcu_lock_held()) when called from the KCM strparser\nprogram.\n\nHold the RCU read lock while running the program.","published":"2026-09-17T16:06:39.775Z","modified":"2026-09-19T03:47:28.783870391Z","cvss":{"score":7.8,"severity":"HIGH","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[{"ecosystem":"Linux","name":"Kernel","fixedVersion":"5.10.270"}],"fix":null,"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/1d26a6e007d46babc7fa76e5a157dccf86cd55c0"},{"type":"WEB","url":"https://git.kernel.org/stable/c/21526f8a191a3c50622b8c10bd927870d780eae4"},{"type":"WEB","url":"https://git.kernel.org/stable/c/292846223eaddba890e40699d2ab82ee5671798c"},{"type":"WEB","url":"https://git.kernel.org/stable/c/37108861cf7bd909d4a372069bcd61c8f489e232"},{"type":"WEB","url":"https://git.kernel.org/stable/c/3c70d27e792a28bca650ddd8a9aa0fe3591ffec5"},{"type":"WEB","url":"https://git.kernel.org/stable/c/b0346dd64e4905291cc9c479f2e6cf1884ced4e6"},{"type":"WEB","url":"https://git.kernel.org/stable/c/b0e94ea63dbdcbfec9beb819cd5f8fa584809ef2"},{"type":"WEB","url":"https://git.kernel.org/stable/c/f392affef3c9ce64dfdde794df0579e0a7793440"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90143.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-90143"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-09-19T03:47:28.783870391Z"}}