| Name | CVE-2017-18249 |
| Description | The add_free_nid function in fs/f2fs/node.c in the Linux kernel before 4.12 does not properly track an allocated nid, which allows local users to cause a denial of service (race condition) or possibly have unspecified other impact via concurrent threads. |
| 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-1715-1 |
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 | fixed |
| stretch (lts), stretch | 4.9.320-3 | fixed |
| buster (security), buster, buster (lts) | 4.19.316-1 | fixed |
| bullseye | 5.10.223-1 | fixed |
| bullseye (security) | 5.10.226-1 | fixed |
| bookworm | 6.1.115-1 | fixed |
| bookworm (security) | 6.1.112-1 | fixed |
| trixie | 6.11.7-1 | fixed |
| sid | 6.11.9-1 | fixed |
| linux-4.9 (PTS) | jessie, jessie (lts) | 4.9.303-1~deb8u3 | 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 | (not affected) | | | |
| linux | source | stretch | 4.9.144-1 | | | |
| linux | source | (unstable) | 4.12.6-1 | | | |
| linux-4.9 | source | jessie | 4.9.144-3.1~deb8u1 | | DLA-1715-1 | |
| linux-4.9 | source | (unstable) | (unfixed) | | | |
Notes
[jessie] - linux <ignored> (Hard to backport and low priority outside of Android)
[wheezy] - linux <not-affected> (Vulnerable code not present)
Fixed by: https://git.kernel.org/linus/30a61ddf8117c26ac5b295e1233eaa9629a94ca3