CVE-2017-18249

NameCVE-2017-18249
DescriptionThe 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.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, 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)jessie3.16.56-1+deb8u1vulnerable
jessie (security)3.16.59-1vulnerable
stretch4.9.110-1vulnerable
stretch (security)4.9.110-3+deb9u6vulnerable
buster, sid4.18.10-2fixed
linux-4.9 (PTS)jessie (security)4.9.110-3+deb9u5~deb8u1vulnerable

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
linuxsource(unstable)4.12.6-1medium
linuxsourcewheezy(not affected)
linux-4.9sourcejessie(unfixed)medium

Notes

[wheezy] - linux <not-affected> (Vulnerable code not present)
Fixed by: https://git.kernel.org/linus/30a61ddf8117c26ac5b295e1233eaa9629a94ca3

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