---
cve: "CVE-2026-53097"
severity: "LOW"
cvss: 3.1
epss: "13%"
vendor: "Linux"
kev: false
exploited: false
published: "2026-06-24 17:17:23"
tags: [cve, security, low]
source: tsecurity.de CVE-Dossier
exported: "2026-09-07T12:40:08+02:00"
---

# CVE-2026-53097

> 3.1 LOW

## Beschreibung

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.

## Patch verfügbar (OSV)

- Kernel ≥ 6.12.91
- Kernel ≥ 6.18.33
- Kernel ≥ 7.0.10

## Referenzen

- <https://git.kernel.org/stable/c/180182a3f23ff79430a32ca2c4c1885368ceab48>
- <https://git.kernel.org/stable/c/aa4a31cd89f4fde5043ac613fe0e27014a60a60b>
- <https://git.kernel.org/stable/c/188e10f9ea3109d23c6b7643aa6ec2f5cb0faa6d>
- <https://git.kernel.org/stable/c/c8f62f73bbced3a79894655bdb0b625462d956fc>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-53097) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_