SB2024080843 - Improper locking in Linux kernel afs

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Main Vulnerability Database SB2024080843

SB2024080843 - Improper locking in Linux kernel afs

Published: August 8, 2024 Updated: May 12, 2025

Security Bulletin ID SB2024080843
CSH Severity
Low
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Local access
Highest impact Denial of service

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Improper locking (CVE-ID: CVE-2024-42251)

CWE-ID: CWE-667 - Improper Locking

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear


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