Answer in brief
CVE-2026-89970 records a Critical severity (CVSS 9.8) vulnerability in nvmet-auth: Synchronize timeout work during SQ teardown. 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 9.8. 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 | >=1a70200f404ae210b4f0334e3936e84f8edb6bc8 <664022fa1c93f4eba09ef5ee02411b9709dd7a93 || >=1a70200f404ae210b4f0334e3936e84f8edb6bc8 <c3c126a6142a1335bc8c34a5607c39cf01daf295 || >=1a70200f404ae210b4f0334e3936e84f8edb6bc8 <c17c87bde6d6f5252a6a6f0a94b2430164aa28d5 || >=1a70200f404ae210b4f0334e3936e84f8edb6bc8 <7555ddd60af72df2862dd8f9b730a9848577edda || >=1a70200f404ae210b4f0334e3936e84f8edb6bc8 <eb4f9127a2b8a152743f1ee597627e2f69cb54fe || >=1a70200f404ae210b4f0334e3936e84f8edb6bc8 <eaa948c0e19b1bb2d93262207bca0c3d19cc3406 | 664022fa1c93f4eba09ef5ee02411b9709dd7a93, c3c126a6142a1335bc8c34a5607c39cf01daf295, c17c87bde6d6f5252a6a6f0a94b2430164aa28d5, 7555ddd60af72df2862dd8f9b730a9848577edda, eb4f9127a2b8a152743f1ee597627e2f69cb54fe, eaa948c0e19b1bb2d93262207bca0c3d19cc3406 |
| Linux/Linuxgeneric | 6.0 | Not reported |
Published upstream
Sep 16, 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 16, 2026
In the Linux kernel, the following vulnerability has been resolved: nvmet-auth: Synchronize timeout work during SQ teardown nvmet_auth_sq_free() cancels auth_expired_work with cancel_delayed_work(). If the work has already started, cancellation does not wait for the callback. Transport teardown can consequently free or reuse the queue containing struct nvmet_sq while nvmet_auth_expired_work() still accesses that SQ. Add a teardown-specific helper that synchronously drains the delayed work before freeing authentication state, and use it from nvmet_sq_destroy(). Keep the non-synchronous helper for in-band authentication state cleanup, where the SQ owner remains alive.
Quoted source text, attributed separately from HOL analysis.