| Name | CVE-2018-1093 |
| Description | The ext4_valid_block_bitmap function in fs/ext4/balloc.c in the Linux kernel through 4.15.15 allows attackers to cause a denial of service (out-of-bounds read and system crash) via a crafted ext4 image because balloc.c and ialloc.c do not validate bitmap block numbers. |
| 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-1392-1, DLA-1422-1, DSA-4188-1, ELA-17-1 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| linux (PTS) | jessie, jessie (lts) | 3.16.84-1 | fixed |
| stretch (security) | 4.9.320-2 | fixed | |
| stretch (lts), stretch | 4.9.320-3 | fixed | |
| buster (security), buster, buster (lts) | 4.19.316-1 | fixed | |
| bullseye | 5.10.218-1 | fixed | |
| bullseye (security) | 5.10.221-1 | fixed | |
| bookworm | 6.1.94-1 | fixed | |
| bookworm (security) | 6.1.99-1 | fixed | |
| trixie | 6.9.10-1 | fixed | |
| sid | 6.9.11-1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| linux | source | wheezy | 3.16.57-2~deb7u1 | ELA-17-1 | ||
| linux | source | jessie | 3.16.57-1 | DLA-1422-1 | ||
| linux | source | stretch | 4.9.88-1 | DSA-4188-1 | ||
| linux | source | (unstable) | 4.15.17-1 |
https://bugzilla.kernel.org/show_bug.cgi?id=199181