CVE-2020-14362

NameCVE-2020-14362
DescriptionA flaw was found in X.Org Server before xorg-x11-server 1.20.9. An Integer underflow leading to heap-buffer overflow may lead to a privilege escalation vulnerability. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
ReferencesDLA-2359-1, DSA-4758-1

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
xorg-server (PTS)bullseye2:1.20.11-1+deb11u13fixed
bullseye (security)2:1.20.11-1+deb11u14fixed
bookworm, bookworm (security)2:21.1.7-3+deb12u8fixed
sid, trixie2:21.1.14-2fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
xorg-serversourcestretch2:1.19.2-1+deb9u6DLA-2359-1
xorg-serversourcebuster2:1.20.4-1+deb10u1DSA-4758-1
xorg-serversource(unstable)2:1.20.9-1

Notes

https://lists.x.org/archives/xorg-announce/2020-August/003058.html
https://gitlab.freedesktop.org/xorg/xserver/-/commit/2902b78535ecc6821cc027351818b28a5c7fdbdc

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