CVE-2021-4010

HIGH

xorg-x11-server <21.1.2, <1.20.14 - Memory Corruption

Title source: llm

Description

A flaw was found in xorg-x11-server in versions before 21.1.2 and before 1.20.14. An out-of-bounds access can occur in the SProcScreenSaverSuspend function. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.

References (10)

[Vendor Advisory] https://lists.x.org/archives/xorg-announce/2021-December/003122.html

[Vendor Advisory] https://lists.x.org/archives/xorg-announce/2021-December/003124.html

[Third Party Advisory] https://security.netapp.com/advisory/ntap-20220114-0004/

[Third Party Advisory] https://www.debian.org/security/2021/dsa-5027

[Third Party Advisory, VDB Entry] https://www.zerodayinitiative.com/advisories/ZDI-21-1549/

[Mailing List, Third Party Advisory] https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NKLSZCY47QK4RCJFXITYFALCGPJAFXOK/

[Mailing List, Third Party Advisory] https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NXTRPFEQLFZ6NT2LPLZEID664RGC3OCC/

[Mailing List, Third Party Advisory] https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PDHYZM6FII35JA7J275MFCJO6ADJUPQX/

[Mailing List, Third Party Advisory] https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/T57DCF726O5LLTST4NBL5PQ7DLPB46HT/

[Third Party Advisory] https://security.gentoo.org/glsa/202305-30

Scores

CVSS v3 7.8

EPSS 0.0008

EPSS Percentile 23.2%

Attack Vector LOCAL

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Classification

CWE

CWE-119

Status published

Affected Products (7)

x.org/x_server < 1.20.14

x.org/x_server

x.org/x_server

fedoraproject/fedora

fedoraproject/fedora

debian/debian_linux

debian/debian_linux

Timeline

Published Dec 17, 2021

Tracked Since Feb 18, 2026