CVE-2016-4581

NameCVE-2016-4581
Descriptionfs/pnode.c in the Linux kernel before 4.5.4 does not properly traverse a mount propagation tree in a certain case involving a slave mount, which allows local users to cause a denial of service (NULL pointer dereference and OOPS) via a crafted series of mount system calls.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SuSE, Mageia, GitHub code/issues, web search, more)
ReferencesDSA-3607-1
NVD severitymedium (attack range: local)

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
linux (PTS)wheezy3.2.78-1fixed
wheezy (security)3.2.96-2fixed
jessie3.16.51-2fixed
jessie (security)3.16.43-2+deb8u5fixed
stretch4.9.65-3fixed
stretch (security)4.9.30-2+deb9u5fixed
buster4.13.13-1fixed
sid4.14.2-1fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
linuxsource(unstable)4.5.4-1medium
linuxsourcejessie3.16.7-ckt25-2+deb8u2mediumDSA-3607-1
linuxsourcewheezy(not affected)

Notes

[wheezy] - linux <not-affected> (Vulnerable code introduced later)
Fixed by: https://git.kernel.org/linus/5ec0811d30378ae104f250bfc9b3640242d81e3f (v4.6-rc7)
Introduced by: https://git.kernel.org/linus/f2ebb3a921c1ca1e2ddd9242e95a1989a50c4c68 (v3.15-rc1)

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