CVE-2017-6874

NameCVE-2017-6874
DescriptionRace condition in kernel/ucount.c in the Linux kernel through 4.10.2 allows local users to cause a denial of service (use-after-free and system crash) or possibly have unspecified other impact via crafted system calls that leverage certain decrement behavior that causes incorrect interaction between put_ucounts and get_ucounts.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SuSE, Mageia, GitHub code/issues, web search, more)
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)3.2.89-2fixed
jessie3.16.43-2+deb8u2fixed
jessie (security)3.16.43-2+deb8u3fixed
stretch4.9.30-2+deb9u2fixed
stretch (security)4.9.30-2+deb9u3fixed
buster, sid4.12.6-1fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
linuxsource(unstable)4.9.16-1medium
linuxsourcejessie(not affected)
linuxsourcewheezy(not affected)

Notes

[jessie] - linux <not-affected> (Vulnerable code introduced later)
[wheezy] - linux <not-affected> (Vulnerable code introduced later)
Fixed by: https://git.kernel.org/linus/040757f738e13caaa9c5078bca79aa97e11dde88

Search for package or bug name: Reporting problems