#VU105652 Use-after-free in Linux kernel - CVE-2025-21855
Published: March 12, 2025 / Updated: May 11, 2025
Vulnerability identifier: #VU105652
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-2025-21855
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 ibmvnic_xmit() and netif_stop_subqueue() functions in drivers/net/ethernet/ibm/ibmvnic.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/093b0e5c90592773863f300b908b741622eef597
- https://git.kernel.org/stable/c/25dddd01dcc8ef3acff964dbb32eeb0d89f098e9
- https://git.kernel.org/stable/c/501ac6a7e21b82e05207c6b4449812d82820f306
- https://git.kernel.org/stable/c/abaff2717470e4b5b7c0c3a90e128b211a23da09
- https://git.kernel.org/stable/c/bdf5d13aa05ec314d4385b31ac974d6c7e0997c9
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.130
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.12.17
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.13.5
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.14
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.6.80