Use-after-free in Linux kernel - CVE-2026-53098
Published: June 25, 2026
Vulnerability identifier: #VU135197
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-53098
CWE-ID: CWE-416
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel
Linux kernel
Detailed vulnerability description
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to use-after-free in mt7915_mac_dump_work() when processing queued dump work during device detachment. A local user can trigger device recovery while the device removal path is freeing crash_data to cause a denial of service.
The issue is caused by a race condition between the removal path and a workqueue handler.
How to mitigate CVE-2026-53098
Install security update from vendor's repository.
Sources
- https://git.kernel.org/stable/c/1146d0946b5358fad24812bd39d68f31cd40cc34
- https://git.kernel.org/stable/c/21ce6d867867645fff0ef657be18f61d9f39dcd8
- https://git.kernel.org/stable/c/6b7cbb13c838cf2a5f2e7be0e96fe15250087939
- https://git.kernel.org/stable/c/6d5202409467d621b6d1dfd7fc7dadb997fe66d2
- https://git.kernel.org/stable/c/e6856af8a22a8e2cd18241a465ed00c2301b3a5e