libaribb24 (aribb24) through 1.0.3 contains a stack-based buffer overflow vulnerability in decoder_handle_csi() in src/decoder.c that allows attackers to write past a fixed 256-entry array by supplying unbounded CSI parameter bytes. Attackers can embed a caption statement with a CSI introducer and over 256 parameter bytes in media files or broadcast streams to crash FFmpeg or VLC or corrupt the return address.
Fix
Nothing published yet: no patch, vendor advisory or mitigation reference on NVD, no vendor advisory in the News for this CVE, not in CISA's KEV, no fixed package version. BaselineWatch does not guess at one.
Change history 2
- StatusReceived → DeferredNVD modified 2026-10-19 21:14
- First seenCVSS 6.9NVD modified 2026-10-19 15:17
Affected (CPE criteria) 0
NVD has not attached CPE configurations yet.
References 4
- https://github.com/nkoriyama/aribb24/blob/v1.0.3/src/decoder.c
- https://hackmd.io/@haindpwn/aribb24-caption-data-unit-and-csi-oob-write
- https://www.vulncheck.com/advisories/libaribb24-through-1.0.3-stack-buffer-overflow-via-decoder-handle-csi
- https://hackmd.io/@haindpwn/cve-2026-112280-112281-aribb24-caption-data-unit-and-csi-oob-write