CVE-2015-8844

NameCVE-2015-8844
DescriptionThe signal implementation in the Linux kernel before 4.3.5 on powerpc platforms does not check for an MSR with both the S and T bits set, which allows local users to cause a denial of service (TM Bad Thing exception and panic) via a crafted application.
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)jessie3.16.51-2fixed
jessie (security)3.16.56-1+deb8u1fixed
stretch4.9.82-1+deb9u3fixed
stretch (security)4.9.88-1+deb9u1fixed
buster4.16.12-1fixed
sid4.16.16-1fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
linuxsource(unstable)4.4.2-1medium
linuxsourcejessie3.16.7-ckt25-1medium
linuxsourcewheezy(not affected)

Notes

[wheezy] - linux <not-affected> (Vulnerable code introduced later)
https://bugzilla.redhat.com/show_bug.cgi?id=1326540
Upstream commit: https://git.kernel.org/linus/d2b9d2a5ad5ef04ff978c9923d19730cb05efd55 (v4.4-rc3)
Introduced by: https://git.kernel.org/linus/2b0a576d15e0e14751f00f9c87e46bad27f217e7 (v3.9-rc1)

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