SB2024060480 - Use-after-free in Linux kernel mm
Published: June 4, 2024 Updated: May 13, 2025
Security Bulletin ID
SB2024060480
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-2021-47011)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the drain_obj_stock() function in mm/memcontrol.c. A local user can escalate privileges on the system.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/31df8bc4d3feca9f9c6b2cd06fd64a111ae1a0e6
- https://git.kernel.org/stable/c/89b1ed358e01e1b0417f5d3b0082359a23355552
- https://git.kernel.org/stable/c/c3ae6a3f3ca4f02f6ccddf213c027302586580d0
- https://git.kernel.org/stable/c/9f38f03ae8d5f57371b71aa6b4275765b65454fd
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.37
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.11.21
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.12.4
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.13