SB2025100466 - Use-after-free in Linux kernel trace
Published: October 4, 2025 Updated: October 27, 2025
Security Bulletin ID
SB2025100466
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-2023-53587)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the rb_free_cpu_buffer() and ring_buffer_free() functions in kernel/trace/ring_buffer.c. A local user can escalate privileges on the system.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/0a65165bd24ee9231191597b7c232376fcd70cdb
- https://git.kernel.org/stable/c/1c99f65d6af2a454bfd5207b4f6a97c8474a1191
- https://git.kernel.org/stable/c/2399b1fda025e939b6fb1ac94505bcf718534e65
- https://git.kernel.org/stable/c/2702b67f59d455072a08dc40312f9b090d4dec04
- https://git.kernel.org/stable/c/372c5ee537b8366b64b691ba29e9335525e1655e
- https://git.kernel.org/stable/c/675751bb20634f981498c7d66161584080cc061e
- https://git.kernel.org/stable/c/c63741e872fcfb10e153517750f7908f0c00f60d
- https://git.kernel.org/stable/c/d9834abd8b24d1fe8092859e436fe1e0fd467c61
- https://git.kernel.org/stable/c/fc6858b7f8e1221f62ce8c6ff8a13a349c32cd76
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.2.15