Mageia alert MGASA-2026-0315 (libvncserver)

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Mageia Updates <updates-announce@ml.mageia.org>
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updates-announce@ml.mageia.org
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[updates-announce] MGASA-2026-0315: Updated libvncserver packages fix security vulnerabilities
Date:
             
 
Mon, 03 Aug 2026 20:48:07 +0200
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<20260803184807.E2EEF9FEBB@duvel.mageia.org>
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Article
MGASA-2026-0315 - Updated libvncserver packages fix security vulnerabilities

Publication date: 03 Aug 2026
URL: https://advisories.mageia.org/MGASA-2026-0315.html
Type: security
Affected Mageia releases: 10, 9
CVE: CVE-2026-32853,
     CVE-2026-32854,
     CVE-2026-44988,
     CVE-2026-50538

Description:
The updated packages fix security vulnerabilities:
Heap Out-of-Bounds Read in HandleUltraZipBPP due to unchecked
subrectangle count. (CVE-2026-32853)
NULL pointer dereferences in httpd proxy handlers via malformed
CONNECT/GET requests. (CVE-2026-32854)
LibVNCClient Tight Gradient decoding allows malicious server-triggered
heap/stack OOB writes. (CVE-2026-44988)
Attacker-controlled heap out-of-bounds write in libvncclient Tight
decoder. (CVE-2026-50538)

References:
- https://bugs.mageia.org/show_bug.cgi?id=35628
-
https://lists.opensuse.org/archives/list/security-announc...
- https://github.com/LibVNC/libvncserver/security/advisorie...
- https://ubuntu.com/security/notices/USN-8463-1
- https://github.com/LibVNC/libvncserver/security/advisorie...
- https://github.com/LibVNC/libvncserver/security/advisorie...
- https://ubuntu.com/security/notices/USN-8494-1
- https://github.com/LibVNC/libvncserver/security/advisorie...
- https://www.cve.org/CVERecord?id=CVE-2026-32853
- https://www.cve.org/CVERecord?id=CVE-2026-32854
- https://www.cve.org/CVERecord?id=CVE-2026-44988
- https://www.cve.org/CVERecord?id=CVE-2026-50538

SRPMS:
- 10/core/libvncserver-0.9.15-2.1.mga10
- 9/core/libvncserver-0.9.14-1.1.mga9