NULL pointer dereference in Linux kernel - CVE-2024-38306
Published: June 25, 2024 / Updated: May 13, 2025
Vulnerability identifier: #VU93328
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-2024-38306
CWE-ID: CWE-476
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel
Linux kernel
Detailed vulnerability description
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to NULL pointer dereference within the grab_extent_buffer(), check_eb_alignment(), filemap_add_folio(), __free_page(), alloc_extent_buffer() and folio_size() functions in fs/btrfs/extent_io.c. A local user can perform a denial of service (DoS) attack.
How to mitigate CVE-2024-38306
Install update from vendor's website.