CVE-2017-7374

NameCVE-2017-7374
DescriptionUse-after-free vulnerability in fs/crypto/ in the Linux kernel before 4.10.7 allows local users to cause a denial of service (NULL pointer dereference) or possibly gain privileges by revoking keyring keys being used for ext4, f2fs, or ubifs encryption, causing cryptographic transform objects to be freed prematurely.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SuSE, Mageia, GitHub code/issues, web search, more)
NVD severityhigh (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
buster4.11.6-1fixed
sid4.12.6-1fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
linuxsource(unstable)4.9.25-1high
linuxsourcejessie(not affected)
linuxsourcewheezy(not affected)

Notes

[jessie] - linux <not-affected> (Vulnerable code not present; Introduced in 4.2-rc1)
[wheezy] - linux <not-affected> (Vulnerable code not present; Introduced in 4.2-rc1)
Fixed by: https://git.kernel.org/linus/1b53cf9815bb4744958d41f3795d5d5a1d365e2d (4.11-rc4)

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