SB20250620157 - Buffer overflow in Linux kernel ext4
Published: June 20, 2025 Updated: June 21, 2025
Security Bulletin ID
SB20250620157
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) Buffer overflow (CVE-ID: CVE-2022-50020)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to memory corruption within the ext4_resize_fs() function in fs/ext4/resize.c. A local user can escalate privileges on the system.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/0082e99a9074ff88eff729c70c93454c8588d8e1
- https://git.kernel.org/stable/c/53f62a4201be1cfc1e3c971e566888b182c3ffb0
- https://git.kernel.org/stable/c/69cb8e9d8cd97cdf5e293b26d70a9dee3e35e6bd
- https://git.kernel.org/stable/c/72b850a2a996f72541172e7cf686d54a2b29bcd8
- https://git.kernel.org/stable/c/7bdfb01fc5f6b3696728aeb527c50386e0ee09a1
- https://git.kernel.org/stable/c/80288883294c5b4ed18bae0d8bd9c4a12f297074
- https://git.kernel.org/stable/c/952b3dc02baaae6a69c71c0aca23e06741182d9a
- https://git.kernel.org/stable/c/a6805b3dcf5cd41f2ae3a03dca43411135b99849
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.211