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CVE-2026-75143

FFmpeg Heap Buffer Overflow via RIST Protocol Reader PUBLISHED

Description (CNA)

FFmpeg before commit 1c10bcc contains a heap buffer overflow in the RIST protocol reader (libavformat/librist.c). librist_read() ignored its size argument and copied the full received payload length into the caller-provided destination buffer, overflowing it when the payload exceeds the destination size. This is reachable via the async:rist:// URL scheme, where the async wrapper supplies a smaller buffer than the received payload. A remote RIST sender can trigger the overflow by sending a packet whose payload exceeds the caller buffer size.

Affected (CNA)

Vendor / productVersions
FFmpeg / FFmpegaffected 0 before 1c10bcc2e17255dacb717a25ab3db142ce390602

CWE

CWE-122

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.