Improper locking in Linux kernel - CVE-2024-42251

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Main Vulnerability Database Vulnerabilities #VU95560

Improper locking in Linux kernel - CVE-2024-42251

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


Vulnerability identifier: #VU95560
CSH Severity: Low
CVSS v4.0: 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
CVE-ID: CVE-2024-42251
CWE-ID: CWE-667
Exploitation vector: Local access
Exploit availability: No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel

Detailed vulnerability description

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.


How to mitigate CVE-2024-42251

Install update from vendor's website.

Sources