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Stack-based Buffer Overflow The advisory has been revoked - it doesn't affect any version of package tigervnc  (opens in a new tab)

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EPSS
2.48% (83rd percentile)

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  • Snyk IDSNYK-RHEL9-TIGERVNC-10667158
  • published9 Jul 2025
  • disclosed14 Dec 2022
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Introduced: 14 Dec 2022

CVE-2022-46340  (opens in a new tab)
CWE-121  (opens in a new tab)

Amendment

The Red Hat security team deemed this advisory irrelevant for RHEL:9.

NVD Description

Note: Versions mentioned in the description apply only to the upstream tigervnc package and not the tigervnc package as distributed by RHEL.

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.

References