Out-of-bounds Read Affecting tigervnc package, versions <0:1.15.0-9.el8_10


Severity

Recommended
0.0
high
0
10

Based on AlmaLinux security rating.

Threat Intelligence

EPSS
0.25% (17th percentile)

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  • Snyk IDSNYK-ALMALINUX8-TIGERVNC-16427161
  • published6 May 2026
  • disclosed19 May 2026

Introduced: 6 May 2026

CVE-2026-34003  (opens in a new tab)
CWE-125  (opens in a new tab)

How to fix?

Upgrade AlmaLinux:8 tigervnc to version 0:1.15.0-9.el8_10 or higher.
This issue was patched in ALSA-2026:13414.

NVD Description

Note: Versions mentioned in the description apply only to the upstream tigervnc package and not the tigervnc package as distributed by AlmaLinux. See How to fix? for AlmaLinux:8 relevant fixed versions and status.

A flaw was found in the X.Org X server's XKB key types request validation. A local attacker could send a specially crafted request to the X server, leading to an out-of-bounds memory access vulnerability. This could result in the disclosure of sensitive information or cause the server to crash, leading to a Denial of Service (DoS). In certain configurations, higher impact outcomes may be possible.

References

CVSS Base Scores

version 3.1