VulnerabilityPublished 24 Jun 2026Updated 21 Oct 2026

CVE-2026-53097: Linux kernel · wifi: mt76: mt7996: fix use-after-free bugs in mt7996_mac_dump_work()

Affects Linux kernelSource CVE Database V5

Not known to be exploited · fixed in c8f62f73bbced3a79894655bdb0b625462d956fc : update Linux kernel when convenient.

Data as of 26 Oct 2026, 17:30 UTC

Severity

Unrated

Rated by Threat Radar · No CVSS score from NVD or the CNA

EPSS: 0.1% chance of exploitation in 30 days – higher than 6% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: Available – fixed in c8f62f73bbced3a79894655bdb0b625462d956fc, aa4a31cd89f4fde5043ac613fe0e27014a60a60b, 180182a3f23ff79430a32ca2c4c1885368ceab48 +2

Exploitation evidence

Disclosed: evidence found.
CVE published 24 Jun 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponised: Public exploit code exists in Metasploit or Exploit-DB, or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected ≥ 878161d5d4a469a6ef7f3fb4fe9f676bc508ee99, < c8f62f73bbced3a79894655bdb0b625462d956fc	Fixed in c8f62f73bbced3a79894655bdb0b625462d956fc
LinuxLinux	Affected ≥ 878161d5d4a469a6ef7f3fb4fe9f676bc508ee99, < aa4a31cd89f4fde5043ac613fe0e27014a60a60b	Fixed in aa4a31cd89f4fde5043ac613fe0e27014a60a60b
LinuxLinux	Affected ≥ 878161d5d4a469a6ef7f3fb4fe9f676bc508ee99, < 180182a3f23ff79430a32ca2c4c1885368ceab48	Fixed in 180182a3f23ff79430a32ca2c4c1885368ceab48
LinuxLinux	Affected ≥ 878161d5d4a469a6ef7f3fb4fe9f676bc508ee99, < 533b1a9fa0128c75e40dd2d2c38a32b4e660741f	Fixed in 533b1a9fa0128c75e40dd2d2c38a32b4e660741f
LinuxLinux	Affected ≥ 878161d5d4a469a6ef7f3fb4fe9f676bc508ee99, < 188e10f9ea3109d23c6b7643aa6ec2f5cb0faa6d	Fixed in 188e10f9ea3109d23c6b7643aa6ec2f5cb0faa6d
LinuxLinux	Affected =6.4	Fixed in–

Description

In the Linux kernel, the following vulnerability has been resolved: wifi: mt76: mt7996: fix use-after-free bugs in mt7996_mac_dump_work() When the mt7996 pci chip is detaching, the mt7996_crash_data is released in mt7996_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 mt7996_mac_dump_work(). The race condition can occur as follows: CPU 0 (removal path) | CPU 1 (workqueue) mt7996_pci_remove() | mt7996_sys_recovery_set() mt7996_unregister_device() | mt7996_reset() mt7996_coredump_unregister() | queue_work() vfree(dev->coredump.crash_data) | mt7996_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 mt7996_unregister_device() to synchronize with any pending or executing dump work.

References

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