CVE-2021-44879: Null Pointer Dereference
First published: Sun Feb 13 2022(Updated: )
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.
Credit: cve@mitre.org cve@mitre.org cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Linux kernel | <5.16.3 | |
| debian/linux | 5.10.223-1 5.10.226-1 6.1.115-1 6.1.119-1 6.12.5-1 6.12.6-1 |
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Reference Links
- https://bugzilla.kernel.org/show_bug.cgi?id=215231
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.16.3
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=9056d6489f5a41cfbb67f719d2c0ce61ead72d9f
- https://lore.kernel.org/linux-f2fs-devel/20211206144421.3735-3-chao@kernel.org/T/
- 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/T/
- https://launchpad.net/bugs/cve/CVE-2021-44879
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-44879
- https://nvd.nist.gov/vuln/detail/CVE-2021-44879
- https://security-tracker.debian.org/tracker/CVE-2021-44879
- https://ubuntu.com/security/CVE-2021-44879
- https://www.openwall.com/lists/oss-security/2022/02/12/1
- https://git.kernel.org/linus/9056d6489f5a41cfbb67f719d2c0ce61ead72d9f
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