CVE-2019-13648

NameCVE-2019-13648
DescriptionIn the Linux kernel through 5.2.1 on the powerpc platform, when hardware transactional memory is disabled, a local user can cause a denial of service (TM Bad Thing exception and system crash) via a sigreturn() system call that sends a crafted signal frame. This affects arch/powerpc/kernel/signal_32.c and arch/powerpc/kernel/signal_64.c.
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)
ReferencesDLA-1885-1, DSA-4495-1, DSA-4497-1
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)3.16.72-1vulnerable
stretch4.9.168-1vulnerable
stretch (security)4.9.168-1+deb9u5fixed
buster4.19.37-5vulnerable
buster (security)4.19.37-5+deb10u2fixed
bullseye, sid5.2.9-2fixed
linux-4.9 (PTS)jessie (security)4.9.168-1+deb9u5~deb8u1fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
linuxsource(unstable)5.2.6-1medium
linuxsourcebuster4.19.37-5+deb10u2mediumDSA-4495-1
linuxsourcestretch4.9.168-1+deb9u5mediumDSA-4497-1
linux-4.9sourcejessie4.9.168-1+deb9u5~deb8u1mediumDLA-1885-1

Notes

https://patchwork.ozlabs.org/patch/1133904/

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