SB2024053156 - Use-after-free in Linux kernel trace
Published: May 31, 2024 Updated: May 14, 2025
Security Bulletin ID
SB2024053156
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-2021-47375)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the blk_trace_remove_queue() function in kernel/trace/blktrace.c. A local user can escalate privileges on the system.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/488da313edf3abea7f7733efe011c96b23740ab5
- https://git.kernel.org/stable/c/dacfd5e4d1142bfb3809aab3634a375f6f373269
- https://git.kernel.org/stable/c/d56171d9360c0170c5c5f8f7e2362a2e999eca40
- https://git.kernel.org/stable/c/677e362ba807f3aafe6f405c07e0b37244da5222
- https://git.kernel.org/stable/c/ebb8d26d93c3ec3c7576c52a8373a2309423c069
- https://git.kernel.org/stable/c/3815fe7371d2411ce164281cef40d9fc7b323dee
- https://git.kernel.org/stable/c/a5f8e86192612d0183047448d8bbe7918b3f1a26
- https://git.kernel.org/stable/c/5afedf670caf30a2b5a52da96eb7eac7dee6a9c9
- https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.249
- https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.209
- https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.4.286
- https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.285
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.70
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.14.9
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.150