A flaw was found in GEGL. The Radiance HDR loader reads past the end of a memory-mapped image when an uncompressed scanline is shorter than the… (CVE-2026-103641)
Description
A vulnerability in GEGL's Radiance HDR loader causes it to read past the end of a memory-mapped image when an uncompressed scanline is shorter than the width declared in the file header. This can lead to application crashes when opening specially crafted HDR files. The issue affects multiple specific versions of GEGL and has a medium severity rating.
CVSS v3.1
Score 5.5medium
Affected software
pkg:deb/ubuntu/gegl?arch=source&distro=esm-apps/xenialpkg:deb/ubuntu/gegl?arch=source&distro=esm-apps/bionicpkg:deb/ubuntu/gegl?arch=source&distro=esm-apps/focalpkg:deb/ubuntu/gegl?arch=source&distro=jammypkg:deb/ubuntu/gegl?arch=source&distro=noblepkg:deb/ubuntu/gegl?arch=source&distro=stonkingpkg:deb/ubuntu/gegl?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 GEGL library contains a flaw in its Radiance HDR image loader where it reads beyond the allocated memory of a memory-mapped image if an uncompressed scanline is shorter than the width specified in the file header. This improper bounds checking can cause the application using the loader to crash when processing a crafted HDR file. The vulnerability is identified as CVE-2026-103641 and has a CVSS 3.1 base score of 5.5, indicating a medium severity denial-of-service impact without confidentiality or integrity loss.
Potential Impact
Exploitation of this vulnerability results in an application crash (denial of service) when opening a maliciously crafted Radiance HDR image file. There is no indication of confidentiality or integrity impact. No known exploits are reported in the wild.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, avoid opening untrusted Radiance HDR files with affected versions of GEGL to mitigate risk.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- UBUNTU-CVE-2026-103641
- Osv Schema Version
- 1.7.0
- Ecosystems
- ["Ubuntu:Pro:16.04:LTS","Ubuntu:Pro:18.04:LTS","Ubuntu:Pro:20.04:LTS","Ubuntu:22.04:LTS","Ubuntu:24.04:LTS","Ubuntu:26.10","Ubuntu:26.04:LTS"]
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6ad3f4f62cdf04f6566575fc
Added to database: 10/17/2026, 22:21:42 UTC
Last enriched: 10/17/2026, 22:42:47 UTC
Last updated: 10/17/2026, 22:42:47 UTC
Views: 2
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