SB2024080843 - Improper locking in Linux kernel afs
Published: August 8, 2024 Updated: May 12, 2025
Security Bulletin ID
SB2024080843
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 locking (CVE-ID: CVE-2024-42251)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper locking within the page_folio() function in mm/gup.c, within the filemap_get_folios_contig(), filemap_get_read_batch() and next_uptodate_folio() functions in mm/filemap.c, within the cifs_extend_writeback() function in fs/smb/client/file.c, within the afs_extend_writeback() function in fs/afs/write.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/16380f52b72166d6a33b508cc2509716f436253f
- https://git.kernel.org/stable/c/e7db2762ea3e69f215b3ec4db666006deccc37b4
- https://git.kernel.org/stable/c/fa2690af573dfefb47ba6eef888797a64b6b5f3c
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.10
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.6.42