CVE-2026-89764

CVE CVE-2026-89764EUVD EUVD-2026-76676Published 2026-09-11T19:47:05.000ZLast changed 2026-09-13T06:34:08.000ZCVSS 7.8

What the advisory describes

In the Linux kernel, the following vulnerability has been resolved: rust: devres: fix race between concurrent revokers There is a potential race condition when two paths try to revoke a Devres concurrently. The driver core's devres_release_all() calls Revocable::revoke() via the release callback, while Devres::drop() calls revoke_nosync() on another CPU. The revoker that does not claim the is_available swap returns immediately, but the revoker that did may still be executing drop_in_place() on the inner data. This can cause a use-after-free when the other revoker's caller proceeds to drop adjacent resources that drop_in_place() still references (e.g., Devres<DmaMappedSgt> racing with SGTable freeing the backing sg_table and pages). Fix this by adding a Completion. The release callback signals the Completion after revoke() finishes, and Devres::drop() waits for it when it loses the is_available swap. This ensures the wrapped object is fully torn down before Devres::drop() returns.

Source: EUVD (ENISA), in the words of the advisory.

Products the advisory names

These come from the advisory itself, not from any check we performed.

Linux — Linux patch: 7.3-rc1; 05aa6fb1c21d7fb9df735da24096d793223789d5 <c7e3d57c705ab1053a6a1bbef96795e792da1540; 6.18; 05aa6fb1c21d7fb9df735da24096d793223789d5 <acc516dfa1972d31836b50abc0115216cd0fccc5; patch: 7.2.4; patch: 0

The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.

Carried in the product catalogue

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Linux — Linux

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