CVE-2020-1751

Name	CVE-2020-1751
Description	An out-of-bounds write vulnerability was found in glibc before 2.31 when handling signal trampolines on PowerPC. Specifically, the backtrace function did not properly check the array bounds when storing the frame address, resulting in a denial of service or potential code execution. The highest threat from this vulnerability is to system availability.
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
glibc (PTS)	bullseye	2.31-13+deb11u11	fixed
	bullseye (security)	2.31-13+deb11u10	fixed
	bookworm	2.36-9+deb12u9	fixed
	bookworm (security)	2.36-9+deb12u7	fixed
	sid, trixie	2.40-6	fixed

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

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
glibc	source	(unstable)	2.30-3

Notes

[buster] - glibc <ignored> (powerpc is not supported by LTS)
https://sourceware.org/bugzilla/show_bug.cgi?id=25423
Fixed by: https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=d93769405996dfc11d216ddbe415946617b5a494