DEBIAN-CVE-2026-75145
FFmpeg before commit b4c199c contains an incorrect integer narrowing conversion in the AV1 RTP packetizer (libavformat/rtpenc_av1.c). The OBU size is cast to long before comparison against the remaining frame size. On targets where long is 32 bits, including 64-bit Windows, sufficiently large OBU size values are sign-flipped by the narrowing cast, producing a negative value that passes the payload size check. This allows an oversized OBU to bypass the safety bound on affected platforms, leading to out-of-bounds memory access when the oversized value is subsequently used as a copy length.
DEBIAN-CVE-2026-75145
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: osv:DEBIAN-CVE-2026-75145
ffmpeg
Source reference: /affected/0/package/name
- Affected versions
- 7:7.1.1-1
Source reference:
/affected/0/versions7:7.1.2-1Source reference:
/affected/0/versions7:7.1.3-1Source reference:
/affected/0/versions7:8.0-1Source reference:
/affected/0/versions7:8.0-2Source reference:
/affected/0/versions7:8.0.1-1Source reference:
/affected/0/versions7:8.0.1-2Source reference:
/affected/0/versions7:8.0.1-3Source reference:
/affected/0/versions7:8.1-1Source reference:
/affected/0/versions7:8.1-2Source reference:
/affected/0/versions7:8.1-3Source reference:
/affected/0/versions7:8.1.1-1Source reference:
/affected/0/versions7:8.1.1-2Source reference:
/affected/0/versions7:8.1.1-3Source reference:
/affected/0/versions7:8.1.1-4Source reference:
/affected/0/versions7:8.1.2-1Source reference:
/affected/0/versions7:8.1.2-2Source reference:
/affected/0/versions7:9.0-1Source reference:
/affected/0/versions7:9.0.1-1Source reference:
/affected/0/versions - Fixed versions
- 7:9.0.2-1
Source reference:
/affected/0/ranges - Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "7:9.0.2-1"
}
]
}
],
"package": {
"name": "ffmpeg",
"purl": "pkg:deb/debian/ffmpeg?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"versions": [
"7:7.1.1-1",
"7:7.1.2-1",
"7:7.1.3-1",
"7:8.0-1",
"7:8.0-2",
"7:8.0.1-1",
"7:8.0.1-2",
"7:8.0.1-3",
"7:8.1-1",
"7:8.1-2",
"7:8.1-3",
"7:8.1.1-1",
"7:8.1.1-2",
"7:8.1.1-3",
"7:8.1.1-4",
"7:8.1.2-1",
"7:8.1.2-2",
"7:9.0-1",
"7:9.0.1-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-75145.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
]Publisher severity
No explicit severity was provided.
- Event
- #58320 · Revision 1
- Added to Heist Feed
- Publisher date