CVE-2026-89970

Summary

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.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux1a70200f404ae210b4f0334e3936e84f8edb6bc8 < 664022fa1c93f4eba09ef5ee02411b9709dd7a93affected
LinuxLinux1a70200f404ae210b4f0334e3936e84f8edb6bc8 < c3c126a6142a1335bc8c34a5607c39cf01daf295affected
LinuxLinux1a70200f404ae210b4f0334e3936e84f8edb6bc8 < c17c87bde6d6f5252a6a6f0a94b2430164aa28d5affected
LinuxLinux1a70200f404ae210b4f0334e3936e84f8edb6bc8 < 7555ddd60af72df2862dd8f9b730a9848577eddaaffected
LinuxLinux1a70200f404ae210b4f0334e3936e84f8edb6bc8 < eb4f9127a2b8a152743f1ee597627e2f69cb54feaffected
LinuxLinux1a70200f404ae210b4f0334e3936e84f8edb6bc8 < eaa948c0e19b1bb2d93262207bca0c3d19cc3406affected
LinuxLinux6.0affected
LinuxLinux0 < 6.0unaffected
LinuxLinux6.1.188 <= 6.1.*unaffected
LinuxLinux6.6.157 <= 6.6.*unaffected
LinuxLinux6.12.110 <= 6.12.*unaffected
LinuxLinux6.18.51 <= 6.18.*unaffected
LinuxLinux7.2.5 <= 7.2.*unaffected
LinuxLinux7.3-rc2 <= *unaffected

Weaknesses

References