Improper resource shutdown or release in Linux kernel - CVE-2026-64164
Published: July 20, 2026
Vulnerability identifier: #VU138464
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-2026-64164
CWE-ID: CWE-404
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 improper resource shutdown or release in the btrfs_sync_file trace event in include/trace/events/btrfs.h when handling file sync operations with the trace event enabled. A local user can trigger the vulnerable trace event to cause a denial of service.
Exploitation requires the btrfs_sync_file trace event to be enabled.
How to mitigate CVE-2026-64164
Install security update from vendor's repository.
Sources
- https://git.kernel.org/stable/c/0a96d9a85cd2240481297156b9bb72e10b7a8036
- https://git.kernel.org/stable/c/12a0487945c09760a5968d9333383014ea294117
- https://git.kernel.org/stable/c/26b2290baaf6da6add0f782a100766e686a33f4f
- https://git.kernel.org/stable/c/4361954f0e158af0530caa1e57f12b531be4658f
- https://git.kernel.org/stable/c/6279992c9ba2774901c9d4dd4a481162e2534714
- https://git.kernel.org/stable/c/c32a7e0e3c73c1c0768556a56bd78de9f7b83780
- https://git.kernel.org/stable/c/c73370c677646e86fc4b1780fb07027bdf847375
- https://git.kernel.org/stable/c/d78b0a80eac36879ef5478707135c446920e134b