Improper resource shutdown or release in Linux kernel - CVE-2026-64493
Published: July 27, 2026
Vulnerability identifier: #VU139437
CSH Severity: Low
CVSS v4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-64493
CWE-ID: CWE-404
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to improper resource shutdown or release in mpl115_read_raw() in drivers/iio/pressure/mpl115.c when handling failed reads of processed pressure or raw temperature. A local user can trigger a read error to cause a denial of service.
The issue leaks a runtime PM reference on the error path and can prevent the device from autosuspending.
Affected software
Linux kernel
Debian Linux
linux (Debian package)
Debian Linux
linux (Debian package)
How to mitigate CVE-2026-64493
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3
linux (Debian package) - update to 6.12.100-1
linux (Debian package) - update to 6.12.100-1
External References
- https://git.kernel.org/stable/c/46e69d3dd429b33e50e2731913239f6af4ea2705
- https://git.kernel.org/stable/c/5022f4ed5aae974ec530e3cbf0bd223be13055f7
- https://git.kernel.org/stable/c/aab0fed636b14a5fd52fcae58b484f1cb96b841d
- https://git.kernel.org/stable/c/b3f1af4ba8e9cf33aa08c4cdcaa5a17b140521ec
- https://git.kernel.org/stable/c/fbe67ff37a6fd855a6c097f84f3738bd13d0a898