Description
libvncclient v0.9.13 was discovered to contain a memory leak via the function rfbClientCleanup().
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | libvncserver | 0.9.13+dfsg-5 | — |
| Debian 13 | libvncserver | 0.9.13+dfsg-5 | — |
| Debian 12 | libvncserver | 0.9.13+dfsg-5 | — |
| Debian 10 | libvncserver | 0.9.11+dfsg-1.3+deb10u5 | DLA-3125-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | veyon +2 | No fix yet | — |
| Ubuntu 26.04 LTS | libvncserver | 0.9.15+dfsg-3ubuntu0.1 | USN-8463-1 |
| Ubuntu 26.04 LTS | veyon +2 | No fix yet | — |
| Ubuntu 25.10 | libvncserver | 0.9.15+dfsg-1ubuntu0.1 | USN-8463-1 |
| Ubuntu 25.10 | veyon +2 | No fix yet | — |
| Ubuntu 24.04 LTS | libvncserver | 0.9.14+dfsg-1ubuntu0.1 | USN-8463-1 |
| Ubuntu 24.04 LTS | veyon +2 | No fix yet | — |
| Ubuntu 22.04 LTS | libvncserver | 0.9.13+dfsg-3ubuntu0.1 | USN-8463-1 |
| Ubuntu 22.04 LTS | veyon +2 | No fix yet | — |
Show 8 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 20.04 LTS | veyon +2 | No fix yet | — |
| Ubuntu 18.04 LTS | italc +2 | No fix yet | — |
| Ubuntu 16.04 LTS | italc +2 | No fix yet | — |
| Ubuntu 14.04 LTS | x11vnc | No fix yet | — |
| Ubuntu Pro 20.04 LTS | x11vnc | No fix yet | — |
| Ubuntu Pro 18.04 LTS | x11vnc | No fix yet | — |
| Ubuntu Pro 16.04 LTS | x11vnc | No fix yet | — |
| Ubuntu Pro 14.04 LTS | tightvnc | No fix yet | — |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP4 | LibVNCServer | 0.9.10-150000.4.29.1 | SUSE-SU-2022:3990-1, SUSE-SU-2022:3540-1 |
| SLES 15 SP3 | LibVNCServer | 0.9.10-150000.4.29.1 | SUSE-SU-2022:3990-1 |
| SLES 12 SP5 | LibVNCServer | 0.9.9-17.41.1 | SUSE-SU-2022:4330-1 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 12 SP5 | LibVNCServer | 0.9.9-17.41.1 | SUSE-SU-2022:4330-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap 15.4 | LibVNCServer | 0.9.10-150000.4.29.1 | SUSE-SU-2022:3990-1, SUSE-SU-2022:3540-1 |
| openSUSE Leap 15.3 | LibVNCServer | 0.9.10-150000.4.29.1 | SUSE-SU-2022:3990-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | libvncserver | 0.9.13-r5 | — |
| Alpine v3.23 | libvncserver | 0.9.13-r5 | — |
| Alpine v3.22 | libvncserver | 0.9.13-r5 | — |
| Alpine v3.21 | libvncserver | 0.9.13-r5 | — |
| Alpine v3.20 | libvncserver | 0.9.13-r5 | — |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.19 | libvncserver | 0.9.13-r5 | — |
| Alpine v3.18 | libvncserver | 0.9.13-r5 | — |
| Alpine v3.17 | libvncserver | 0.9.13-r5 | — |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2 | libvncserver +1 | 0.9.9-14.amzn2.0.1 | ALAS2-2023-2170 |
Advisories 6
- USN-8463-1 libvncserver vulnerabilities Ubuntu Security Notices (USN) · Jun 23, 2026
- DLA-3125-1 libvncserver - security update Debian Security (DSA / DLA) · Mar 9, 2026
- SUSE-SU-2022:3990-1 Security update for LibVNCServer SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2022:3540-1 Security update for LibVNCServer SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2022:4330-1 Security update for LibVNCServer SUSE / openSUSE Security Updates · May 2, 2025
- ALAS2-2023-2170 Low: libvncserver security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · Jul 25, 2023