A heap buffer overflow vulnerability was found in GStreamer's rfbsrc plugin. When a client connects to a malicious RFB/VNC server that advertises a 16bpp framebuffer and sends Hextile-encoded updates, the Hextile background fill path writes 32-bit pixel values into a buffer allocated for 16-bit pixels. This type mismatch causes an out-of-bounds heap write that can lead to denial of service (process crash) and potential memory corruption.
Metrics
Affected Vendors & Products
References
History
Thu, 09 Jul 2026 14:30:00 +0000
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ssvc
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Thu, 09 Jul 2026 12:15:00 +0000
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threat_severity
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threat_severity
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Thu, 09 Jul 2026 10:45:00 +0000
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| Description | A heap buffer overflow vulnerability was found in GStreamer's rfbsrc plugin. When a client connects to a malicious RFB/VNC server that advertises a 16bpp framebuffer and sends Hextile-encoded updates, the Hextile background fill path writes 32-bit pixel values into a buffer allocated for 16-bit pixels. This type mismatch causes an out-of-bounds heap write that can lead to denial of service (process crash) and potential memory corruption. | |
| Title | Gstreamer: gstreamer: rfbsrc/librfb hextile heap out-of-bounds write with 16bpp framebuffer | |
| First Time appeared |
Redhat
Redhat enterprise Linux |
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| Weaknesses | CWE-787 | |
| CPEs | cpe:/o:redhat:enterprise_linux:10 cpe:/o:redhat:enterprise_linux:6 cpe:/o:redhat:enterprise_linux:7 cpe:/o:redhat:enterprise_linux:8 cpe:/o:redhat:enterprise_linux:9 |
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| Vendors & Products |
Redhat
Redhat enterprise Linux |
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| References |
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| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: redhat
Published:
Updated: 2026-07-09T13:50:41.903Z
Reserved: 2026-07-06T13:40:46.923Z
Link: CVE-2026-59691
Updated: 2026-07-09T13:50:39.086Z
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OpenCVE Enrichment
No data.