#VU103959 Use-after-free in Linux kernel - CVE-2025-21700
Published: February 13, 2025 / Updated: May 11, 2025
Vulnerability identifier: #VU103959
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:U/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2025-21700
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 qdisc_lookup() function in net/sched/sch_api.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/46c59ec33ec98aba20c15117630cae43a01404cc
- https://git.kernel.org/stable/c/73c7e1d6898ccbeee126194dcc05f58b8a795e70
- https://git.kernel.org/stable/c/7e2bd8c13b07e29a247c023c7444df23f9a79fd8
- https://git.kernel.org/stable/c/bc50835e83f60f56e9bec2b392fb5544f250fb6f
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.235
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.179
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.291
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.129
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.12.13
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.13.2
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.14
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.6.76