#VU105654 Use-after-free in Linux kernel - CVE-2025-21858
Published: March 12, 2025 / Updated: May 11, 2025
Vulnerability identifier: #VU105654
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-2025-21858
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 geneve_destroy_tunnels() function in drivers/net/geneve.c. A local user can escalate privileges on the system.
Remediation
Install update from vendor's website.
External links
- https://git.kernel.org/stable/c/3ce92ca990cfac88a87c61df3cc0b5880e688ecf
- https://git.kernel.org/stable/c/788dbca056a8783ec063da3c9d49a3a71c76c283
- https://git.kernel.org/stable/c/904e746b2e7fa952ab8801b303ce826a63153d78
- https://git.kernel.org/stable/c/9593172d93b9f91c362baec4643003dc29802929
- https://git.kernel.org/stable/c/da9b0ae47f084014b1e4b3f31f70a0defd047ff3
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.12.17