SB2024032259 - Denial of service in Linux kernel btrfs
Published: March 22, 2024 Updated: May 14, 2025
Security Bulletin ID
SB2024032259
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Deadlock (CVE-ID: CVE-2021-46987)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to a deadlock when cloning inline extent with low amount of free metadata space in btrfs. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/d5347827d0b4b2250cbce6eccaa1c81dc78d8651
- https://git.kernel.org/stable/c/96157707c0420e3d3edfe046f1cc797fee117ade
- https://git.kernel.org/stable/c/f9baa501b4fd6962257853d46ddffbc21f27e344
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.11.22
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.12.5
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.13