SB2024053127 - Use-after-free in Linux kernel bpf
Published: May 31, 2024 Updated: May 14, 2025
Security Bulletin ID
SB2024053127
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-2021-47300)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the kernel/bpf/verifier.c. A local user can escalate privileges on the system.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/39f1735c8107ef43a53c4daf82f330d880488d8f
- https://git.kernel.org/stable/c/cbb086074dab631ac43f8645cbac1d7b148e05c4
- https://git.kernel.org/stable/c/5dd0a6b8582ffbfa88351949d50eccd5b6694ade
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.54
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.13.6
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.14