| Name | CVE-2014-5045 |
| Description | The mountpoint_last function in fs/namei.c in the Linux kernel before 3.15.8 does not properly maintain a certain reference count during attempts to use the umount system call in conjunction with a symlink, which allows local users to cause a denial of service (memory consumption or use-after-free) or possibly have unspecified other impact via the umount program. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
Vulnerable and fixed packages
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 |
| trixie, sid | 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 | wheezy | (not affected) | | | |
| linux | source | (unstable) | 3.14.15-1 | | | |
| linux-2.6 | source | (unstable) | (not affected) | | | |
Notes
[wheezy] - linux <not-affected> (Introduced in 3.12)
- linux-2.6 <not-affected> (Introduced in 3.12)
https://lkml.org/lkml/2014/7/21/98