Use-after-free in Linux kernel - CVE-2025-37776
Published: May 2, 2025 / Updated: May 10, 2025
Vulnerability identifier: #VU108237
CSH Severity: Low
CVSS v4.0: 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-2025-37776
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 escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the free_opinfo(), opinfo_get_list(), opinfo_put(), opinfo_add(), opinfo_del() and smb_break_all_levII_oplock() functions in fs/smb/server/oplock.c. A local user can escalate privileges on the system.
How to mitigate CVE-2025-37776
Install update from vendor's website.
Sources
- https://git.kernel.org/stable/c/18b4fac5ef17f77fed9417d22210ceafd6525fc7
- https://git.kernel.org/stable/c/296cb5457cc6f4a754c4ae29855f8a253d52bcc6
- https://git.kernel.org/stable/c/d54ab1520d43e95f9b2e22d7a05fc9614192e5a5
- https://git.kernel.org/stable/c/d73686367ad68534257cd88a36ca3c52cb8b81d8
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.14.4