CVE-2021-4011
High
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 SwapCreateRegister function. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
SeverityHigh
CVSS7.8
Exploit probability—
Product
X.org X Server
PublishedDec 17, 2021
First seenDec 17, 2021
Weakness typeCWE-119Memory buffer bounds error
How to fix
Update
- x.org x_server1.20.14 or later
Vendor advisories
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PDHYZM6FII35JA7J275MFCJO6ADJUPQX/
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/T57DCF726O5LLTST4NBL5PQ7DLPB46HT/
- debian.org/security/2021/dsa-5027
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NKLSZCY47QK4RCJFXITYFALCGPJAFXOK/
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NXTRPFEQLFZ6NT2LPLZEID664RGC3OCC/
- security.gentoo.org/glsa/202305-30
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| x.org x_server | v < 1.20.14, 21.1.0, 21.1.1 | 1.20.14 |
| fedoraproject fedora | 34, 35 | — |
| debian debian_linux | 9.0, 10.0, 11.0 | — |
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