CVE-2021-44879
linux - security update
5.5
MEDIUM
CVSS 3.1
EPSS 0.07%
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.
How to fix CVE-2021-44879
To remediate CVE-2021-44879, upgrade the affected package to a fixed version below.
- Debian/linux—upgrade to 5.10.205-2 or later
- Debian/linux—upgrade to 4.19.304-1 or later
- —upgrade to 5.10.205-2 or later
- —upgrade to 5.10.205-2~deb10u1 or later
Is CVE-2021-44879 being exploited?
Low — EPSS is 0.1%, meaning exploitation activity has not been observed at scale.
Affected packages (4)
- from 0, < 5.10.205-2
- from 0, < 4.19.304-1
- from 0, < 5.10.205-2
- from 0, < 5.10.205-2~deb10u1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM5.5 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H |