wifi: mt76: mt7915: fix use-after-free bugs in mt7915_mac_dump_work()

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Summary

CVECVE-2026-53098
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-06-24 17:17:24 UTC
Updated2026-06-24 17:17:24 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: wifi: mt76: mt7915: fix use-after-free bugs in mt7915_mac_dump_work() When the mt7915 pci chip is detaching, the mt7915_crash_data is released in mt7915_coredump_unregister(). However, the work item dump_work may still be running or pending, leading to UAF bugs when the already freed crash_data is dereferenced again in mt7915_mac_dump_work(). The race condition can occur as follows: CPU 0 (removal path) | CPU 1 (workqueue) mt7915_pci_remove() | mt7915_sys_recovery_set() mt7915_unregister_device() | mt7915_reset() mt7915_coredump_unregister() | queue_work() vfree(dev->coredump.crash_data) | mt7915_mac_dump_work() | crash_data-> // UAF Fix this by ensuring dump_work is properly canceled before the crash_data is deallocated. Add cancel_work_sync() in mt7915_unregister_device() to synchronize with any pending or executing dump work.

Risk And Classification

EPSS: 0.001680000 probability, percentile 0.063830000 (date 2026-06-29)

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 4dbcb9125cc3e10a6d879c10e4f5816d05a87c49 6d5202409467d621b6d1dfd7fc7dadb997fe66d2 git Not specified
CNA Linux Linux affected 4dbcb9125cc3e10a6d879c10e4f5816d05a87c49 e6856af8a22a8e2cd18241a465ed00c2301b3a5e git Not specified
CNA Linux Linux affected 4dbcb9125cc3e10a6d879c10e4f5816d05a87c49 6b7cbb13c838cf2a5f2e7be0e96fe15250087939 git Not specified
CNA Linux Linux affected 4dbcb9125cc3e10a6d879c10e4f5816d05a87c49 21ce6d867867645fff0ef657be18f61d9f39dcd8 git Not specified
CNA Linux Linux affected 4dbcb9125cc3e10a6d879c10e4f5816d05a87c49 1146d0946b5358fad24812bd39d68f31cd40cc34 git Not specified
CNA Linux Linux affected 6.2 Not specified
CNA Linux Linux unaffected 6.2 semver Not specified
CNA Linux Linux unaffected 6.6.141 6.6.* semver Not specified
CNA Linux Linux unaffected 6.12.91 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.33 6.18.* semver Not specified
CNA Linux Linux unaffected 7.0.10 7.0.* semver Not specified
CNA Linux Linux unaffected 7.1 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/21ce6d867867645fff0ef657be18f61d9f39dcd8 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/e6856af8a22a8e2cd18241a465ed00c2301b3a5e 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/6b7cbb13c838cf2a5f2e7be0e96fe15250087939 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/1146d0946b5358fad24812bd39d68f31cd40cc34 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/6d5202409467d621b6d1dfd7fc7dadb997fe66d2 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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