{"id":"CVE-2026-90373","title":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mt76: mt7915: clear wcid mask under mutex after RCU pointer clear\n\nmt7915_remove_interface() cleared the wcid mask bit with no lock held and\nbefore clearing the R…","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mt76: mt7915: clear wcid mask under mutex after RCU pointer clear\n\nmt7915_remove_interface() cleared the wcid mask bit with no lock held and\nbefore clearing the R…","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= f3049b88b2b32326df97461813ae73e8bbc296fc < 5dce25f1d609ba991a9c22c27be586c92f03ed77","Linux >= f3049b88b2b32326df97461813ae73e8bbc296fc < b4a41a47a67c788e6b0625fa517ec8872e99bb6c","Linux >= f3049b88b2b32326df97461813ae73e8bbc296fc < a97b2b942d2f8f12fbd6a7caafc735d1ad115e6b","Linux >= f3049b88b2b32326df97461813ae73e8bbc296fc < 6486e11a6e2f679597af2d5bb48c3b07a2b2a7ba","Linux 6.12"],"published":"2026-09-17","updated":"2026-09-17","sourceUpdated":"2026-09-17T17:17:36.503","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-90373","references":[{"url":"https://git.kernel.org/stable/c/5dce25f1d609ba991a9c22c27be586c92f03ed77","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/6486e11a6e2f679597af2d5bb48c3b07a2b2a7ba","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/a97b2b942d2f8f12fbd6a7caafc735d1ad115e6b","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/b4a41a47a67c788e6b0625fa517ec8872e99bb6c","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"tags":["nvd","cve.org"],"ingestedAt":"2026-09-17T16:21:47.808Z","epss":0.002,"epssPercentile":0.10173,"slug":"CVE-2026-90373","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mt76: mt7915: clear wcid mask under mutex after RCU pointer clear\n\nmt7915_remove_interface() cleared the wcid mask bit with no lock held and\nbefore clearing the RCU wcid pointer. The mask is a non-atomic RMW shared\nwith the allocators, which all run under dev->mt76.mutex; on DBDC the two\nwiphys share one mt76_dev, so this raced add_interface/sta_add on the\nother band and could leak or double-hand-out a wcid. Clearing the bit\nbefore the RCU pointer also let a concurrent allocation reuse the index\nand publish its wcid, which the subsequent NULL assignment then wiped.\nMove the clear into the existing mutex section, after the RCU pointer is\ncleared.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}