DEBIAN-CVE-2026-75145
- Source
- https://security-tracker.debian.org/tracker/CVE-2026-75145
- Import Source
- https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-75145.json
- JSON Data
- https://api.osv.dev/v1/vulns/DEBIAN-CVE-2026-75145
- Upstream
- Published
- 2026-08-19T17:21:12Z
- Modified
- 2026-09-14T17:03:33Z
- Severity
-
- 5.8 (Medium) CVSS_V4 - CVSS:4.0/AV:L/AC:H/AT:N/PR:N/UI:P/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X CVSS Calculator
- Summary
- [none]
- Details
-
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.
- References
Affected packages
Debian:14 / ffmpeg
Package
- Name
- ffmpeg
- Purl
- pkg:deb/debian/ffmpeg?arch=source&distro=forky
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0 Unknown introduced version / All previous versions are affected