ALPINE-CVE-2026-90783

Source
https://security.alpinelinux.org/vuln/CVE-2026-90783
Import Source
https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-90783.json
JSON Data
https://api.osv.dev/v1/vulns/ALPINE-CVE-2026-90783
Upstream
  • CVE-2026-90783
Published
2026-09-13T13:16:29Z
Modified
2026-11-03T06:33:04Z
Severity
  • 8.5 (High) CVSS_V4 - CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/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

MKVToolNix through 101.0 contains a heap buffer overflow in the bundled avilib library's ODML superindex parser due to integer wraparound in 32-bit arithmetic. Attackers can craft a malicious AVI file with oversized entry counts that cause an undersized heap allocation, allowing a heap buffer overflow when the file is parsed with mkvmerge.

References

Affected packages

Alpine:v3.24 / mkvtoolnix

Package

Name
mkvtoolnix
Purl
pkg:apk/alpine/mkvtoolnix?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
99.0-r1

Database specific

source
"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-90783.json"