| Name | CVE-2021-4155 |
| Description | A data leak flaw was found in the way XFS_IOC_ALLOCSP IOCTL in the XFS filesystem allowed for size increase of files with unaligned size. A local attacker could use this flaw to leak data on the XFS filesystem otherwise not accessible to them. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DLA-2940-1, DLA-2941-1, DSA-5050-1, DSA-5096-1 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| linux (PTS) | buster | 4.19.249-2 | fixed |
| buster (security) | 4.19.289-2 | fixed | |
| bullseye | 5.10.178-3 | fixed | |
| bullseye (security) | 5.10.191-1 | fixed | |
| bookworm | 6.1.38-1 | fixed | |
| bookworm (security) | 6.1.52-1 | fixed | |
| sid, trixie | 6.5.3-1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| linux | source | stretch | 4.9.303-1 | DLA-2940-1 | ||
| linux | source | buster | 4.19.232-1 | DSA-5096-1 | ||
| linux | source | bullseye | 5.10.92-1 | DSA-5050-1 | ||
| linux | source | (unstable) | 5.15.15-1 | |||
| linux-4.19 | source | stretch | 4.19.232-1~deb9u1 | DLA-2941-1 |
https://bugzilla.redhat.com/show_bug.cgi?id=2034813
https://git.kernel.org/linus/983d8e60f50806f90534cc5373d0ce867e5aaf79 (5.16)
https://www.openwall.com/lists/oss-security/2022/01/10/1