CVE-2022-49738
kernel: f2fs: fix to do sanity check on i_extra_isize in is_alive()
Severity
ImportantRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · March 27, 2025
Updated · September 13, 2026
Description
A flaw was found in the Linux kernel's F2FS (Flash-Friendly File System). A local attacker could exploit this vulnerability by not performing a proper sanity check on the i_extra_isize field during garbage collection. This oversight leads to an out-of-bounds read, which could result in information disclosure or a system crash, causing a denial of service.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.1 · 7.1CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
CWE-125 · Out-of-bounds Read