Libheif: UNKNOWN READ in HeifPixelImage::overlay
A medium severity vulnerability in libheif was reported by OSS-Fuzz involving an unknown read error in the HeifPixelImage::overlay function. The issue causes a crash during image overlay processing in the HEIF image decoding workflow. Multiple specific versions of libheif are affected, but no patch or fix information is currently provided.
AI Analysis
Technical Summary
The vulnerability is an UNKNOWN READ crash occurring in the HeifPixelImage::overlay function within libheif, as reported by OSS-Fuzz. The crash occurs during the decoding of overlay images in the HEIF format, specifically in the functions HeifPixelImage::overlay, HeifContext::decode_overlay_image, and HeifContext::decode_image_planar. The report identifies affected versions including 1.16.2 through 1.23.1 and a commit hash version. No CVSS score or detailed impact analysis is available, and no official patch or remediation guidance is provided in the input data.
Potential Impact
The vulnerability causes a crash due to an unknown read during HEIF image overlay processing, which may lead to denial of service or application instability when processing crafted HEIF images. There is no indication of known exploits in the wild or further impact such as code execution from the provided data.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, users should exercise caution when processing untrusted HEIF images with affected versions of libheif.
Libheif: UNKNOWN READ in HeifPixelImage::overlay
Description
A medium severity vulnerability in libheif was reported by OSS-Fuzz involving an unknown read error in the HeifPixelImage::overlay function. The issue causes a crash during image overlay processing in the HEIF image decoding workflow. Multiple specific versions of libheif are affected, but no patch or fix information is currently provided.
Affected software
pkg:generic/libheifRun 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 is an UNKNOWN READ crash occurring in the HeifPixelImage::overlay function within libheif, as reported by OSS-Fuzz. The crash occurs during the decoding of overlay images in the HEIF format, specifically in the functions HeifPixelImage::overlay, HeifContext::decode_overlay_image, and HeifContext::decode_image_planar. The report identifies affected versions including 1.16.2 through 1.23.1 and a commit hash version. No CVSS score or detailed impact analysis is available, and no official patch or remediation guidance is provided in the input data.
Potential Impact
The vulnerability causes a crash due to an unknown read during HEIF image overlay processing, which may lead to denial of service or application instability when processing crafted HEIF images. There is no indication of known exploits in the wild or further impact such as code execution from the provided data.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, users should exercise caution when processing untrusted HEIF images with affected versions of libheif.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- OSV-2023-1129
- Osv Schema Version
- 1.6.0
- Ecosystems
- ["OSS-Fuzz"]
Threat ID: 6a3ef7aa27e9c79719ffb6c3
Added to database: 06/26/2026, 22:05:30 UTC
Last enriched: 09/07/2026, 17:04:57 UTC
Last updated: 09/07/2026, 17:04:57 UTC
Views: 37
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