PT-2022-7505 · Unknown+5 · Libvncclient+5

Ramin Farajpour Cami · CVE-2020-29260 · Published 2022-09-02 · Updated 2026-06-23

Positive Technologies (AI Summary)

CVSS v2.0

7.8

High

Base vector

AV:N/AC:L/Au:N/C:N/I:N/A:C

Name of the Vulnerable Software and Affected Versions libvncclient version 0.9.13

Description The issue is related to a memory leak in the rfbClientCleanup() function of the libvncclient component. This memory leak can be exploited by a remote attacker to cause a denial of service.

Recommendations For libvncclient version 0.9.13, consider disabling the rfbClientCleanup() function as a temporary workaround until a patch is available.

Fix

DoS

Resource Exhaustion

Weakness Enumeration

CWE-400

Related Identifiers

ALT-PU-2022-2923

ALT-PU-2022-2962

ALT-PU-2022-3020

BDU:2024-06666

CVE-2020-29260

DLA-3125-1

MGASA-2022-0363

OESA-2022-2090

OPENSUSE-SU-2022_3540-1

OPENSUSE-SU-2022_3990-1

OPENSUSE-SU-2024:12313-1

ROSA-SA-2025-2628

SUSE-SU-2022:3540-1

SUSE-SU-2022:3990-1

SUSE-SU-2022:4330-1

SUSE-SU-2022_3540-1

SUSE-SU-2022_3990-1

SUSE-SU-2022_4330-1

USN-8463-1

Affected Products

Alt Linux

Astra Linux

Red Os

Suse

Ubuntu

Libvncclient

References · 40

• https://github.com/LibVNC/libvncserver/commit/bef41f6ec4097a8ee094f90a1b34a708fbd757ec · Patch
• https://ubuntu.com/security/CVE-2026-32854 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2020-29260 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2020-29260 · Security Note
• https://osv.dev/vulnerability/SUSE-SU-2022:4330-1 · Vendor Advisory
• https://debian.org/lts/security/2022/dla-3125 · Vendor Advisory
• https://osv.dev/vulnerability/USN-8463-1 · Vendor Advisory
• https://advisories.mageia.org/MGASA-2022-0363.html · Security Note
• https://ubuntu.com/security/CVE-2026-32853 · Vendor Advisory
• https://osv.dev/vulnerability/OESA-2022-2090 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2020-29260 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2020-29260 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-44988 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2022:3540-1 · Vendor Advisory
• https://osv.dev/vulnerability/DLA-3125-1 · Vendor Advisory