#VU115397 Use-after-free in Linux kernel - CVE-2025-39759
Published: September 16, 2025
Vulnerability identifier: #VU115397
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2025-39759
CWE-ID: CWE-416
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerable software:
Linux kernel
Linux kernel
Software vendor:
Linux Foundation
Linux Foundation
Description
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the btrfs_check_quota_leak() and btrfs_qgroup_rescan() functions in fs/btrfs/qgroup.c. A local user can escalate privileges on the system.
Remediation
Install update from vendor's repository.
External links
- https://git.kernel.org/stable/c/2fd0f5ceb997f90f4332ccbab6c7e907e6b2d0eb
- https://git.kernel.org/stable/c/7cda0fdde5d9890976861421d207870500f9aace
- https://git.kernel.org/stable/c/b172535ccba12f0cf7d23b3b840989de47fc104d
- https://git.kernel.org/stable/c/c38028ce0d0045ca600b6a8345a0ff92bfb47b66
- https://git.kernel.org/stable/c/dd0b28d877b293b1d7f8727a7de08ae36b6b9ef0
- https://git.kernel.org/stable/c/e1249667750399a48cafcf5945761d39fa584edf