CVE-2014-5207

NameCVE-2014-5207
Descriptionfs/namespace.c in the Linux kernel through 3.16.1 does not properly restrict clearing MNT_NODEV, MNT_NOSUID, and MNT_NOEXEC and changing MNT_ATIME_MASK during a remount of a bind mount, which allows local users to gain privileges, interfere with backups and auditing on systems that had atime enabled, or cause a denial of service (excessive filesystem updating) on systems that had atime disabled via a "mount -o remount" command within a user namespace.
SourceCVE (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 PackageReleaseVersionStatus
linux (PTS)buster4.19.249-2fixed
buster (security)4.19.304-1fixed
bullseye5.10.209-2fixed
bullseye (security)5.10.205-2fixed
bookworm6.1.76-1fixed
bookworm (security)6.1.69-1fixed
trixie6.6.15-2fixed
sid6.7.9-2fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
linuxsourcewheezy(not affected)
linuxsource(unstable)3.16.2-1
linux-2.6source(unstable)(not affected)

Notes

[wheezy] - linux <not-affected> (User namespaces only usable in later kernels)
- linux-2.6 <not-affected> (User namespaces only usable in later kernels)
Fixed by https://git.kernel.org/cgit/linux/kernel/git/ebiederm/user-namespace.git/commit/?h=for-linus&id=9566d6742852c527bf5af38af5cbb878dad75705 (v3.17-rc1)
and: https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ffbc6f0ead47fa5a1dc9642b0331cb75c20a640e (v3.17-rc1)
Introduced by: https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=0c55cfc4166d9a0f38de779bd4d75a90afbe7734 (v3.8)
Thread starting at https://www.openwall.com/lists/oss-security/2014/08/12/6

Search for package or bug name: Reporting problems