#VU105656 Out-of-bounds read in Linux kernel - CVE-2025-21866
Published: March 12, 2025 / Updated: May 11, 2025
Vulnerability identifier: #VU105656
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2025-21866
CWE-ID: CWE-125
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 perform a denial of service (DoS) attack.
The vulnerability exists due to an out-of-bounds read error within the text_area_cpu_up() function in arch/powerpc/lib/code-patching.c. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.
External links
- https://git.kernel.org/stable/c/2d542f13d26344e3452eee77613026ce9b653065
- https://git.kernel.org/stable/c/2e6c80423f201405fd65254e52decd21663896f3
- https://git.kernel.org/stable/c/8d06e9208184b2851fa79a3a39d6860320c8bdf8
- https://git.kernel.org/stable/c/c905a3053518212a1017e50bd2be3bee59305bb0
- https://git.kernel.org/stable/c/d262a192d38e527faa5984629aabda2e0d1c4f54
- 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-6.1.130
- 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