CVE-2020-1751

Published: 17 April 2020

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.

Priority

CVSS 3 base score: 7.0

Status

Package	Release	Status
eglibc Launchpad, Ubuntu, Debian	Upstream	Needs triage

	Ubuntu 20.10 (Groovy Gorilla)	Does not exist
	Ubuntu 20.04 LTS (Focal Fossa)	Does not exist
	Ubuntu 18.04 LTS (Bionic Beaver)	Does not exist
	Ubuntu 16.04 LTS (Xenial Xerus)	Does not exist
	Ubuntu 14.04 ESM (Trusty Tahr)	Ignored (out of support)
glibc Launchpad, Ubuntu, Debian	Upstream	Needs triage

	Ubuntu 20.10 (Groovy Gorilla)	Not vulnerable (2.31-0ubuntu9)
	Ubuntu 20.04 LTS (Focal Fossa)	Not vulnerable (2.31-0ubuntu9)
	Ubuntu 18.04 LTS (Bionic Beaver)	Released (2.27-3ubuntu1.2)
	Ubuntu 16.04 LTS (Xenial Xerus)	Released (2.23-0ubuntu11.2)
	Ubuntu 14.04 ESM (Trusty Tahr)	Does not exist
	Patches: Upstream: https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=d93769405996dfc11d216ddbe415946617b5a494

Notes

Author	Note
leosilva	-esm releases only supports amd64 arch
mdeslaur	introduced in https://sourceware.org/git/?p=glibc.git;a=commit;h=d400dcac5e

References

Bugs

https://sourceware.org/bugzilla/show_bug.cgi?id=25423

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