Vulnerability 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.
CVSS Score
5.5
MEDIUM
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | < 5.16.3 |
Related Weaknesses (CWE)
References
- https://bugzilla.kernel.org/show_bug.cgi?id=215231ExploitIssue TrackingVendor Advisory
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.16.3Mailing ListVendor Advisory
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=90Mailing ListPatchVendor Advisory
- https://lists.debian.org/debian-lts-announce/2024/01/msg00004.html
- https://lists.debian.org/debian-lts-announce/2024/01/msg00005.html
- https://lore.kernel.org/linux-f2fs-devel/20211206144421.3735-3-chao%40kernel.org
- https://bugzilla.kernel.org/show_bug.cgi?id=215231ExploitIssue TrackingVendor Advisory
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.16.3Mailing ListVendor Advisory
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=90Mailing ListPatchVendor Advisory
- https://lists.debian.org/debian-lts-announce/2024/01/msg00004.html
- https://lists.debian.org/debian-lts-announce/2024/01/msg00005.html
- https://lore.kernel.org/linux-f2fs-devel/20211206144421.3735-3-chao%40kernel.org
FAQ
What is CVE-2021-44879?
CVE-2021-44879 is a vulnerability with a CVSS score of 5.5 (MEDIUM). 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 severe is CVE-2021-44879?
CVE-2021-44879 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-44879?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.