Answer in brief
CVE-2026-90143 records a High severity (CVSS 7.8) vulnerability in net: kcm: Hold RCU read lock while running BPF parser. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 7.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=9b73896a81dc68a638a011877b7344b252f92276 <37108861cf7bd909d4a372069bcd61c8f489e232 || >=9b73896a81dc68a638a011877b7344b252f92276 <3c70d27e792a28bca650ddd8a9aa0fe3591ffec5 || >=9b73896a81dc68a638a011877b7344b252f92276 <1d26a6e007d46babc7fa76e5a157dccf86cd55c0 || >=9b73896a81dc68a638a011877b7344b252f92276 <b0e94ea63dbdcbfec9beb819cd5f8fa584809ef2 || >=9b73896a81dc68a638a011877b7344b252f92276 <21526f8a191a3c50622b8c10bd927870d780eae4 || >=9b73896a81dc68a638a011877b7344b252f92276 <292846223eaddba890e40699d2ab82ee5671798c || >=9b73896a81dc68a638a011877b7344b252f92276 <f392affef3c9ce64dfdde794df0579e0a7793440 || >=9b73896a81dc68a638a011877b7344b252f92276 <b0346dd64e4905291cc9c479f2e6cf1884ced4e6 | 37108861cf7bd909d4a372069bcd61c8f489e232, 3c70d27e792a28bca650ddd8a9aa0fe3591ffec5, 1d26a6e007d46babc7fa76e5a157dccf86cd55c0, b0e94ea63dbdcbfec9beb819cd5f8fa584809ef2, 21526f8a191a3c50622b8c10bd927870d780eae4, 292846223eaddba890e40699d2ab82ee5671798c, f392affef3c9ce64dfdde794df0579e0a7793440, b0346dd64e4905291cc9c479f2e6cf1884ced4e6 |
| Linux/Linuxgeneric | 4.9 | Not reported |
Published upstream
Sep 17, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 19, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Sep 17, 2026
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.
Quoted source text, attributed separately from HOL analysis.