SB20251008133 - Input validation error in Linux kernel ext4
Published: October 8, 2025 Updated: October 26, 2025
Security Bulletin ID
SB20251008133
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) Input validation error (CVE-ID: CVE-2023-53626)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper input validation within the ext4_rename() function in fs/ext4/namei.c. 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/020166bc6669ca9fb267ebd96bd88c4fb64a5d46
- https://git.kernel.org/stable/c/1c93c42c7bb23057bde8a0a2ab834927ff64d20c
- https://git.kernel.org/stable/c/43ce288ab5d7274a4a141d7f5e3ed2ab7b41f8a2
- https://git.kernel.org/stable/c/70e42feab2e20618ddd0cbfc4ab4b08628236ecd
- https://git.kernel.org/stable/c/c16cbd8233d6c58fc488545393e49b5d55729990
- https://git.kernel.org/stable/c/e71eb4dca41f0f36823724ced0406bb2dbdd5506
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.21