CVE-2026-90373
CVE CVE-2026-90373EUVD EUVD-2026-82034Published 2026-09-17T16:09:13.000Z
What the advisory describes
In the Linux kernel, the following vulnerability has been resolved: wifi: mt76: mt7915: clear wcid mask under mutex after RCU pointer clear mt7915_remove_interface() cleared the wcid mask bit with no lock held and before clearing the RCU wcid pointer. The mask is a non-atomic RMW shared with the allocators, which all run under dev->mt76.mutex; on DBDC the two wiphys share one mt76_dev, so this raced add_interface/sta_add on the other band and could leak or double-hand-out a wcid. Clearing the bit before the RCU pointer also let a concurrent allocation reuse the index and publish its wcid, which the subsequent NULL assignment then wiped. Move the clear into the existing mutex section, after the RCU pointer is cleared.
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: 6.12.110; f3049b88b2b32326df97461813ae73e8bbc296fc <a97b2b942d2f8f12fbd6a7caafc735d1ad115e6b; f3049b88b2b32326df97461813ae73e8bbc296fc <6486e11a6e2f679597af2d5bb48c3b07a2b2a7ba; patch: 6.18.52; patch: 0; patch: 7.2.6; 6.12; f3049b88b2b32326df97461813ae73e8bbc296fc <5dce25f1d609ba991a9c22c27be586c92f03ed77; patch: 7.3-rc1; f3049b88b2b32326df97461813ae73e8bbc296fc <b4a41a47a67c788e6b0625fa517ec8872e99bb6c
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
An estate covering these products can be recorded in Patchlage. An advisory about them appears in the next morning's situation report.
- Linux — Linux
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