| Name | CVE-2021-44879 |
| 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. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more) |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| linux (PTS) | jessie, jessie (lts) | 3.16.84-1 | vulnerable |
| stretch (security) | 4.9.320-2 | vulnerable |
| stretch (lts), stretch | 4.9.320-3 | vulnerable |
| buster | 4.19.249-2 | vulnerable |
| buster (security) | 4.19.269-1 | vulnerable |
| bullseye | 5.10.158-2 | vulnerable |
| bullseye (security) | 5.10.162-1 | vulnerable |
| bookworm | 6.1.15-1 | fixed |
| sid | 6.1.20-1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|
| linux | source | jessie | (unfixed) | end-of-life | | |
| linux | source | (unstable) | 5.16.7-1 | | | |
Notes
[stretch] - linux <ignored> (Minor issue; f2fs is not supportable)
https://www.openwall.com/lists/oss-security/2022/02/12/1
Fixed by: https://git.kernel.org/linus/9056d6489f5a41cfbb67f719d2c0ce61ead72d9f (5.17-rc1)