Freerdp: Out-of-bounds read in H.264 YUV-to-RGB conversion due to decoder/surface dimension mismatch
A vulnerability in FreeRDP causes an out-of-bounds read during H.264 YUV-to-RGB conversion due to a mismatch between decoder and surface dimensions. This issue affects multiple specific package versions of FreeRDP distributed in various Ubuntu releases. No CVSS score is provided for this vulnerability.
AI Analysis
Technical Summary
The vulnerability in FreeRDP arises from an out-of-bounds read during the conversion of H.264 video frames from YUV to RGB format. This occurs due to a mismatch between the decoder's expected dimensions and the actual surface dimensions used in rendering. The issue affects numerous specific FreeRDP versions packaged for Ubuntu across multiple LTS and standard releases. The vulnerability could potentially lead to memory corruption or application crashes when processing crafted video streams. There is no vendor advisory or patch information provided, and no known exploits have been observed.
Potential Impact
The out-of-bounds read may cause memory corruption or crashes in applications using the affected FreeRDP versions when processing H.264 video streams. This could potentially be leveraged to disrupt service or cause denial of service conditions. No evidence of exploitation in the wild is currently known.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, users should consider limiting exposure to untrusted H.264 video streams in FreeRDP sessions. Monitor official Ubuntu security advisories for updates and patches addressing this issue.
Freerdp: Out-of-bounds read in H.264 YUV-to-RGB conversion due to decoder/surface dimension mismatch
Description
A vulnerability in FreeRDP causes an out-of-bounds read during H.264 YUV-to-RGB conversion due to a mismatch between decoder and surface dimensions. This issue affects multiple specific package versions of FreeRDP distributed in various Ubuntu releases. No CVSS score is provided for this vulnerability.
Affected software
pkg:deb/ubuntu/[email protected]~git20140921.1.440916e+dfsg1-5ubuntu1.4?arch=source&distro=xenialpkg:deb/ubuntu/[email protected]+dfsg1-0ubuntu0.18.04.4+esm6?arch=source&distro=esm-infra/bionicpkg:deb/ubuntu/[email protected]~git20140921.1.440916e+dfsg1-15ubuntu1.18.04.2?arch=source&distro=bionicpkg:deb/ubuntu/[email protected]+dfsg1-0ubuntu0.20.04.2+esm4?arch=source&distro=esm-infra/focalpkg:deb/ubuntu/[email protected]+dfsg1-3ubuntu2.11?arch=source&distro=jammypkg:deb/ubuntu/[email protected]+dfsg-0ubuntu0.24.04.1?arch=source&distro=noblepkg:deb/ubuntu/[email protected]+dfsg1-1ubuntu0.1~esm6?arch=source&distro=esm-apps/noblepkg:deb/ubuntu/[email protected]+dfsg-2ubuntu0.5?arch=source&distro=questingpkg:deb/ubuntu/[email protected]+dfsg-0ubuntu0.26.04.1?arch=source&distro=resoluteRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability in FreeRDP arises from an out-of-bounds read during the conversion of H.264 video frames from YUV to RGB format. This occurs due to a mismatch between the decoder's expected dimensions and the actual surface dimensions used in rendering. The issue affects numerous specific FreeRDP versions packaged for Ubuntu across multiple LTS and standard releases. The vulnerability could potentially lead to memory corruption or application crashes when processing crafted video streams. There is no vendor advisory or patch information provided, and no known exploits have been observed.
Potential Impact
The out-of-bounds read may cause memory corruption or crashes in applications using the affected FreeRDP versions when processing H.264 video streams. This could potentially be leveraged to disrupt service or cause denial of service conditions. No evidence of exploitation in the wild is currently known.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, users should consider limiting exposure to untrusted H.264 video streams in FreeRDP sessions. Monitor official Ubuntu security advisories for updates and patches addressing this issue.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- UBUNTU-CVE-2026-55192
- Osv Schema Version
- 1.7.0
- Aliases
- []
- Ecosystems
- ["Ubuntu:16.04:LTS","Ubuntu:Pro:18.04:LTS","Ubuntu:18.04:LTS","Ubuntu:Pro:20.04:LTS","Ubuntu:22.04:LTS","Ubuntu:24.04:LTS","Ubuntu:Pro:24.04:LTS","Ubuntu:25.10","Ubuntu:26.04:LTS"]
- Database Specific Severity
- null
- Cvss Version
- null
Threat ID: 6a5e7a702a4a8d59899de956
Added to database: 07/20/2026, 19:43:44 UTC
Last enriched: 07/20/2026, 20:56:08 UTC
Last updated: 07/31/2026, 12:27:04 UTC
Views: 14
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