CVE-2021-44879

Published: Feb 14, 2022Modified: Jun 17, 2026

5.5

Vector

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Exploitability: 1.8 / Impact: 3.6

Source: NVD

Description

In gc_data_segment in fs/f2fs/gc.c in the Linux kernel before 5.16.3, special files are not considered, leading to a move_data_page NULL pointer dereference.

Affected (1)

Products: Linux: Linux Kernel

Linux

1 product

Linux Kernel

Configuration A

1 vulnerable

Vulnerable Software	Affected Versions
Linux Linux Kernel	Before 5.16.3

Related CWEs

CWE-476

NULL Pointer Dereference

The product dereferences a pointer that it expects to be valid but is NULL.

References (12)

https://bugzilla.kernel.org/show_bug.cgi?id=215231

Source: cve@mitre.org

ExploitIssue TrackingVendor Advisory

https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.16.3

Source: cve@mitre.org

Mailing ListVendor Advisory

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=9056d6489f5a41cfbb67f719d2c0ce61ead72d9f

Source: cve@mitre.org

Mailing ListPatchVendor Advisory

https://lists.debian.org/debian-lts-announce/2024/01/msg00004.html

Source: cve@mitre.org

https://lists.debian.org/debian-lts-announce/2024/01/msg00005.html

Source: cve@mitre.org

https://lore.kernel.org/linux-f2fs-devel/20211206144421.3735-3-chao%40kernel.org/T/

Source: cve@mitre.org

https://bugzilla.kernel.org/show_bug.cgi?id=215231