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{"acknowledgement": "Upstream acknowledges Joshua Rogers (AISLE Research) as the original reporter.", "bugzilla": {"description": "ffmpeg: FFmpeg Heap Buffer Overflow via RIST Protocol Reader", "id": "2519758", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2519758"}, "csaw": false, "cvss3": {"cvss3_base_score": "9.8", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "status": "draft"}, "cwe": "CWE-120", "details": ["A flaw was found in FFmpeg. A heap buffer overflow in the RIST protocol reader allows a remote attacker to trigger memory corruption by sending an oversized packet to an FFmpeg instance receiving a RIST stream. The librist_read() function ignores its buffer size argument, copying the full payload into the caller-provided buffer without bounds checking. This could lead to denial of service or arbitrary code execution."], "mitigation": {"lang": "en:us", "value": "No mitigation is currently available for this flaw."}, "name": "CVE-2026-75143", "package_state": [{"cpe": "cpe:/a:redhat:enterprise_linux_ai:3", "fix_state": "Not affected", "package_name": "ffmpeg", "product_name": "Red Hat Enterprise Linux AI (RHEL AI) 3"}, {"cpe": "cpe:/a:redhat:openshift_ai", "fix_state": "Not affected", "package_name": "rhoai/odh-vllm-gaudi-rhel9", "product_name": "Red Hat OpenShift AI (RHOAI)"}], "public_date": "2026-08-19T16:26:12Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-75143\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-75143\nhttps://code.ffmpeg.org/FFmpeg/FFmpeg/commit/1c10bcc2e17255dacb717a25ab3db142ce390602\nhttps://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/24089\nhttps://www.vulncheck.com/advisories/ffmpeg-heap-buffer-overflow-via-rist-protocol-reader"], "statement": "The ffmpeg package is not shipped in base Red Hat Enterprise Linux. It is available through EPEL and Fedora with librist support enabled. Red Hat Enterprise Linux AI ships a reduced FFmpeg build that explicitly excludes librist, making the RIST code path unreachable. Red Hat OpenShift AI container images do not directly install FFmpeg. Exploitation requires the victim to be actively receiving a RIST stream, which is a niche broadcast video protocol not used in typical RH product deployments.", "threat_severity": "Critical"}

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