SB20250226599 - Improper error handling in Linux kernel ubifs
Published: February 26, 2025 Updated: May 11, 2025
Security Bulletin ID
SB20250226599
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) Improper error handling (CVE-ID: CVE-2021-47635)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper error handling within the ubifs_write_end(), do_writepage(), ubifs_invalidatepage(), ubifs_migrate_page(), ubifs_releasepage() and ubifs_vm_page_mkwrite() functions in fs/ubifs/file.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/3b67db8a6ca83e6ff90b756d3da0c966f61cd37b
- https://git.kernel.org/stable/c/4f75bab98565afd4f905059c56ec4caba88a7eec
- https://git.kernel.org/stable/c/5aaa2c0f0052b02c4a982993d4c5bb68fb7cbe22
- https://git.kernel.org/stable/c/c34ae24a2590fee96a3a7735ba2fa6cc52306221
- https://git.kernel.org/stable/c/fbeb2139eed65e929ce806c6468e6601ade01b1b
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.17.2