SB2024123037 - Use-after-free in Linux kernel block driver
Published: December 30, 2024 Updated: May 12, 2025
Security Bulletin ID
SB2024123037
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-2024-56693)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the __setup(), brd_alloc(), brd_cleanup() and brd_init() functions in drivers/block/brd.c. A local user can escalate privileges on the system.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/259bf925583ec9e3781df778cadf00594095090d
- https://git.kernel.org/stable/c/410896624db639500f24f46478b4bfa05c76bf56
- https://git.kernel.org/stable/c/41219c147df8bbd6591f59af5d695fb6c9a1cbff
- https://git.kernel.org/stable/c/63dfd728b30f79495dacc886127695a379805152
- https://git.kernel.org/stable/c/826cc42adf44930a633d11a5993676d85ddb0842
- https://git.kernel.org/stable/c/c0c2744cd2939ec5999c51dbaf2af16886548b7b
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.11.11