ubuntu-cve-2026-66041
Vulnerability from osv_ubuntu
Published
2026-07-24 20:18
Modified
2026-08-07 15:31
Summary
Details
FFmpeg 7.0 through 8.1.2, fixed in commit 4da9812, contains a heap out-of-bounds write vulnerability in the vf_quirc filter that allows an attacker to corrupt heap memory by supplying a crafted PGS/SUP subtitle file with mismatched frame dimensions. Attackers can provide a subtitle file whose second presentation has larger dimensions than its first, causing av_image_copy_plane() to copy data exceeding the initial allocation size into the undersized libquirc grayscale image buffer, resulting in heap corruption and process crash with potential for code execution.
Severity
8.8 (High)
7.8 (High)
N/A (UNKNOWN)
{
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},
{
"binary_name": "libavformat62",
"binary_version": "7:8.0.1-3ubuntu2+esm1"
},
{
"binary_name": "libavutil60",
"binary_version": "7:8.0.1-3ubuntu2+esm1"
},
{
"binary_name": "libswresample6",
"binary_version": "7:8.0.1-3ubuntu2+esm1"
},
{
"binary_name": "libswscale9",
"binary_version": "7:8.0.1-3ubuntu2+esm1"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:26.04:LTS",
"name": "ffmpeg",
"purl": "pkg:deb/ubuntu/ffmpeg@7:8.0.1-3ubuntu2+esm1?arch=source\u0026distro=esm-apps/resolute"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"7:7.1.1-1ubuntu4",
"7:7.1.2-1ubuntu3",
"7:7.1.2-1ubuntu4",
"7:7.1.3-1ubuntu1",
"7:8.0.1-2ubuntu1",
"7:8.0.1-3ubuntu1",
"7:8.0.1-3ubuntu2",
"7:8.0.1-3ubuntu2+esm1"
]
}
],
"aliases": [],
"details": "FFmpeg 7.0 through 8.1.2, fixed in commit 4da9812, contains a heap out-of-bounds write vulnerability in the vf_quirc filter that allows an attacker to corrupt heap memory by supplying a crafted PGS/SUP subtitle file with mismatched frame dimensions. Attackers can provide a subtitle file whose second presentation has larger dimensions than its first, causing av_image_copy_plane() to copy data exceeding the initial allocation size into the undersized libquirc grayscale image buffer, resulting in heap corruption and process crash with potential for code execution.",
"id": "UBUNTU-CVE-2026-66041",
"modified": "2026-08-07T15:31:51Z",
"published": "2026-07-24T20:18:00Z",
"references": [
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2026-66041"
},
{
"type": "REPORT",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-66041"
},
{
"type": "REPORT",
"url": "https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/23625"
},
{
"type": "REPORT",
"url": "https://code.ffmpeg.org/FFmpeg/FFmpeg/commit/4da9812e25894fb51d62a8875cfa8eb39b5e20f5"
},
{
"type": "REPORT",
"url": "https://www.vulncheck.com/advisories/ffmpeg-heap-out-of-bounds-write-via-vf-quirc-filter"
}
],
"related": [],
"schema_version": "1.7.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
"type": "CVSS_V4"
},
{
"score": "medium",
"type": "Ubuntu"
}
],
"upstream": [
"CVE-2026-66041"
]
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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