SB2025022758 - Use-after-free in Linux kernel
Published: February 27, 2025 Updated: May 11, 2025
Security Bulletin ID
SB2025022758
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Use-after-free (CVE-ID: CVE-2025-21727)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the padata_free_shell() function in kernel/padata.c. A local user can escalate privileges on the system.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/0ae2f332cfd2d74cf3ce344ec9938cf3e29c3ccd
- https://git.kernel.org/stable/c/573ac9c70bf7885dc85d82fa44550581bfc3b738
- https://git.kernel.org/stable/c/80231f069240d52e98b6a317456c67b2eafd0781
- https://git.kernel.org/stable/c/bbccae982e9fa1d7abcb23a5ec81cb0ec883f7de
- https://git.kernel.org/stable/c/e01780ea4661172734118d2a5f41bc9720765668
- 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/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