Out-of-bounds Read Affecting tigervnc package, versions <0:1.15.0-7.el9_8.2


Severity

Recommended
high

Based on Oracle Linux security rating.

Threat Intelligence

EPSS
0.13% (4th percentile)

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  • Snyk IDSNYK-ORACLE9-TIGERVNC-17576516
  • published26 Jun 2026
  • disclosed5 Jun 2026

Introduced: 5 Jun 2026

CVE-2026-50262  (opens in a new tab)
CWE-125  (opens in a new tab)

How to fix?

Upgrade Oracle:9 tigervnc to version 0:1.15.0-7.el9_8.2 or higher.
This issue was patched in ELSA-2026-29844.

NVD Description

Note: Versions mentioned in the description apply only to the upstream tigervnc package and not the tigervnc package as distributed by Oracle. See How to fix? for Oracle:9 relevant fixed versions and status.

An out-of-bounds read flaw was found in the X.Org X server and Xwayland in __glXDisp_ChangeDrawableAttributes(). A wrong size validation check can read a client-controlled number of bytes, exceeding the request buffer, leading to information disclosure. A write path also exists but requires byte-swapped clients which is disabled by default.

References

CVSS Base Scores

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