Home/CVE/A vulnerability was found in X.Org. This security flaw occurs becuase the swap handler for the XTestFakeInput request of
CVE

CVE-2022-46340

A vulnerability was found in X.Org. This security flaw occurs becuase the swap handler for the XTestFakeInput request of

A vulnerability was found in X.Org. This security flaw occurs becuase the swap handler for the XTestFakeInput request of the XTest extension may corrupt the stack if GenericEvents with lengths larger than 32 bytes are sent through a the XTestFakeInput request. This issue can lead to local privileges elevation on systems where the X server is running privileged and remote code execution for ssh X forwarding sessions.

This issue does not affect systems where client and server use the same byte order.

HIGH · CVSS 8.8 EPSS 0.01237
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-787Out-of-bounds Write
CWE-787Out-of-bounds Write
▤

Affected Products & Versions

3
x.org x serverall versions
fedoraproject fedoraall versions
debian linuxall versions
▣

Scoring & Timeline

8.8
HIGH · CVSS v3.1 · secalert@redhat.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD14 Dec 2022 · 09:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
⚑

Vendor Advisories

28
rhsaRHSA-2025:12751Important
suse-csafopenSUSE-SU-2024:12569-1
suse-csafopenSUSE-SU-2024:12570-1
suse-csafSUSE-SU-2023:0731-1
suse-csafSUSE-SU-2023:0683-1
🔗

References & Sources

8
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://access.redhat.com/security/cve/CVE-2022-46340Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2151755Issue TrackingThird Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5NELB7YDWRABYYBG4UPTHRBDTKJRV5M2/Mailing ListThird Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DXDF2O5PPLE3SVAJJYUOSAD5QZ4TWQ2G/Mailing ListThird Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RWTH3SNJ3GKYDSN7I3QDGWYEPSMWU6EP/Mailing ListThird Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Z67QC4C3I2FI2WRFIUPEHKC36J362MLA/Mailing ListThird Party Advisory
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