HighFix available
ffmpeg, libav — security advisory
FFmpeg versions from 4.4 up to, but not including, 9.0 contain an out-of-bounds heap write vulnerability in the native GoPro CineForm HD (CFHD) decoder that allows remote attackers to corrupt heap memory by supplying a crafted AVI file during stream probing. The cfhd_decode() function fails to enforce the non-Bayer logical output-width invariant in the transform-type-2 reconstruction path, causing horiz_filter_clip() to write oversized 16-bit sample rows far beyond the allocated output frame buffer, which can be escalated to arbitrary code execution via overwrite of a live cleanup callback pointer.
- Products
- ffmpeg, libav
- Affected versions
- 6:0.8.7-1ubuntu2, 6:9.10-1ubuntu1, 6:9.10-1ubuntu2, 6:9.10-1ubuntu5, 6:9.10-1ubuntu6, 6:9.10-1ubuntu7, 6:9.11-2ubuntu1, 6:9.11-2ubuntu2, 6:9.13-0ubuntu0.14.04.1, 6:9.14-0ubuntu0.14.04.1, 6:9.16-0ubuntu0.14.04.1, 6:9.18-0ubuntu0.14.04.1, 6:9.20-0ubuntu0.14.04.1, 6:9.20-0ubuntu0.14.04.1+esm1, 7:4.4-6ubuntu5, 7:4.4.1-2ubuntu1, 7:4.4.1-3ubuntu1, 7:4.4.1-3ubuntu2, 7:4.4.1-3ubuntu3, 7:4.4.1-3ubuntu5, 7:4.4.2-0ubuntu0.22.04.1, 7:4.4.2-0ubuntu0.22.04.1+esm1, 7:4.4.2-0ubuntu0.22.04.1+esm10, 7:4.4.2-0ubuntu0.22.04.1+esm11, 7:4.4.2-0ubuntu0.22.04.1+esm12, 7:4.4.2-0ubuntu0.22.04.1+esm13, 7:4.4.2-0ubuntu0.22.04.1+esm2, 7:4.4.2-0ubuntu0.22.04.1+esm3, 7:4.4.2-0ubuntu0.22.04.1+esm4, 7:4.4.2-0ubuntu0.22.04.1+esm5, 7:4.4.2-0ubuntu0.22.04.1+esm6, 7:4.4.2-0ubuntu0.22.04.1+esm7, 7:4.4.2-0ubuntu0.22.04.1+esm8, 7:4.4.2-0ubuntu0.22.04.1+esm9, 7:6.0-6ubuntu1, 7:6.0-9ubuntu1, 7:6.1-2ubuntu1, 7:6.1-3ubuntu1, 7:6.1-4ubuntu1, 7:6.1-5ubuntu1, 7:6.1.1-1ubuntu1, 7:6.1.1-3ubuntu1, 7:6.1.1-3ubuntu5, 7:6.1.1-3ubuntu5+esm1, 7:6.1.1-3ubuntu5+esm10, 7:6.1.1-3ubuntu5+esm11, 7:6.1.1-3ubuntu5+esm2, 7:6.1.1-3ubuntu5+esm3, 7:6.1.1-3ubuntu5+esm4, 7:6.1.1-3ubuntu5+esm5, 7:6.1.1-3ubuntu5+esm6, 7:6.1.1-3ubuntu5+esm7, 7:6.1.1-3ubuntu5+esm8, 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, 7:8.1-3ubuntu3, 7:8.1.2-2ubuntu2
- Fixed versions
- 7:4.4.2-0ubuntu0.22.04.1+esm14, 7:6.1.1-3ubuntu5+esm12, 7:8.0.1-3ubuntu2+esm3
- CVEs
- CVE-2026-70632
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 02:51 UTC · Revision 1
Source evidence
FFmpeg versions from 4.4 up to, but not including, 9.0 contain an out-of-bounds heap write vulnerability in the native GoPro CineForm HD (CFHD) decoder that allows remote attackers to corrupt heap memory by supplying a crafted AVI file during stream probing. The cfhd_decode() function fails to enforce the non-Bayer logical output-width invariant in the transform-type-2 reconstruction path, causing horiz_filter_clip() to write oversized 16-bit sample rows far beyond the allocated output frame buffer, which can be escalated to arbitrary code execution via overwrite of a live cleanup callback pointer.
osv:UBUNTU-CVE-2026-70632
libav
Fixed versions: Not specified
ffmpeg
Fixed versions: 7:4.4.2-0ubuntu0.22.04.1+esm14
ffmpeg
Fixed versions: 7:6.1.1-3ubuntu5+esm12
ffmpeg
Fixed versions: Not specified
ffmpeg
Fixed versions: 7:8.0.1-3ubuntu2+esm3
Complete source record
{
"id": "a09a085a272985be1f30cd7586c846356aa2d49d3fb493cdb0adb2ef504721e3",
"url": "https://osv.dev/vulnerability/UBUNTU-CVE-2026-70632",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "UBUNTU-CVE-2026-70632",
"summary": "FFmpeg versions from 4.4 up to, but not including, 9.0 contain an out-of-bounds heap write vulnerability in the native GoPro CineForm HD (CFHD) decoder that allows remote attackers to corrupt heap memory by supplying a crafted AVI file during stream probing. The cfhd_decode() function fails to enforce the non-Bayer logical output-width invariant in the transform-type-2 reconstruction path, causing horiz_filter_clip() to write oversized 16-bit sample rows far beyond the allocated output frame buffer, which can be escalated to arbitrary code execution via overwrite of a live cleanup callback pointer.",
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{
"value": "7:4.4.2-0ubuntu0.22.04.1+esm6",
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{
"value": "7:4.4.2-0ubuntu0.22.04.1+esm7",
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{
"value": "7:4.4.2-0ubuntu0.22.04.1+esm8",
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{
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"value": "7:6.1.1-3ubuntu5+esm2",
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"value": "7:6.1.1-3ubuntu5+esm3",
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{
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{
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"value": "7:7.1.3-1ubuntu1",
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{
"value": "7:8.0.1-3ubuntu2",
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"severity": "high",
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"aliases": [
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"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"
},
{
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],
"database_specific": {
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},
"ecosystem_specific": {
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{
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{
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{
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{
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{
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{
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{
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},
{
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},
{
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},
{
"binary_name": "libpostproc55",
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},
{
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"binary_version": "7:4.4.2-0ubuntu0.22.04.1+esm14"
},
{
"binary_name": "libswscale5",
"binary_version": "7:4.4.2-0ubuntu0.22.04.1+esm14"
}
],
"availability": "Available with Ubuntu Pro: https://ubuntu.com/pro"
}
},
{
"ranges": [
{
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"events": [
{
"introduced": "0"
},
{
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}
]
}
],
"package": {
"name": "ffmpeg",
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"ecosystem": "Ubuntu:Pro:24.04:LTS"
},
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"7:6.1-4ubuntu1",
"7:6.1-5ubuntu1",
"7:6.1.1-1ubuntu1",
"7:6.1.1-3ubuntu1",
"7:6.1.1-3ubuntu5",
"7:6.1.1-3ubuntu5+esm1",
"7:6.1.1-3ubuntu5+esm2",
"7:6.1.1-3ubuntu5+esm3",
"7:6.1.1-3ubuntu5+esm4",
"7:6.1.1-3ubuntu5+esm5",
"7:6.1.1-3ubuntu5+esm6",
"7:6.1.1-3ubuntu5+esm7",
"7:6.1.1-3ubuntu5+esm8",
"7:6.1.1-3ubuntu5+esm10",
"7:6.1.1-3ubuntu5+esm11"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-70632.json"
},
"ecosystem_specific": {
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{
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{
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"availability": "Available with Ubuntu Pro: https://ubuntu.com/pro"
}
},
{
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],
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],
"availability": "Available with Ubuntu Pro: https://ubuntu.com/pro"
}
}
],
"modified": "2026-10-17T12:59:29.590957712Z",
"provider": "osv",
"upstream": [
"CVE-2026-70632"
],
"references": [
"https://ubuntu.com/security/CVE-2026-70632",
"https://www.cve.org/CVERecord?id=CVE-2026-70632",
"https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/23898",
"https://code.ffmpeg.org/FFmpeg/FFmpeg/commit/1006a2151236f9235bf02822f263b3fb0532111e",
"https://code.ffmpeg.org/FFmpeg/FFmpeg/commit/16b2049d4d5222db6cd7c031409058571c94f6a9",
"https://code.ffmpeg.org/FFmpeg/FFmpeg/commit/db05df9d135fb56a4babb836d5e9f5c1d984e087",
"https://ubuntu.com/security/notices/USN-8680-1",
"https://ubuntu.com/security/notices/USN-8738-1"
]
},
"related_cves": [
{
"value": "CVE-2026-70632",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/1/score"
},
"source_id": "core-osv",
"document_id": 359667,
"published_at": "2026-08-06T22:18:00+00:00"
}