CVE-2026-125262

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{"bugzilla": {"description": "ffmpeg: heap buffer overflow via LCEVC enhancement decoding", "id": "2569999", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2569999"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.8", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "status": "draft"}, "cwe": "CWE-787", "details": ["FFmpeg through 9.0.2 contains a heap buffer overflow vulnerability in libavcodec/lcevcdec.c because LCEVC output picture dimensions are not validated against the allocated frame. Attackers can embed crafted LCEVC enhancement data with differing global configurations in H.264 or HEVC streams to corrupt heap memory in decoding applications.", "A flaw was found in FFmpeg. A heap buffer overflow can occur in the LCEVC decoder when decoding a specially crafted H.264 or HEVC video file due to a missing validation of output picture dimensions against the allocated frame. This vulnerability can lead to memory corruption, potentially resulting in an application crash or arbitrary code execution."], "mitigation": {"lang": "en:us", "value": "Do not decode untrusted H.264 or HEVC video files using FFmpeg."}, "name": "CVE-2026-125262", "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:enterprise_linux_ai:3", "fix_state": "Not affected", "package_name": "rhelai3/bootc-aws-cuda-rhel9", "product_name": "Red Hat Enterprise Linux AI (RHEL AI) 3"}, {"cpe": "cpe:/a:redhat:enterprise_linux_ai:3", "fix_state": "Not affected", "package_name": "rhelai3/bootc-azure-cuda-rhel9", "product_name": "Red Hat Enterprise Linux AI (RHEL AI) 3"}, {"cpe": "cpe:/a:redhat:enterprise_linux_ai:3", "fix_state": "Not affected", "package_name": "rhelai3/bootc-azure-rocm-rhel9", "product_name": "Red Hat Enterprise Linux AI (RHEL AI) 3"}, {"cpe": "cpe:/a:redhat:enterprise_linux_ai:3", "fix_state": "Not affected", "package_name": "rhelai3/bootc-cuda-rhel9", "product_name": "Red Hat Enterprise Linux AI (RHEL AI) 3"}, {"cpe": "cpe:/a:redhat:enterprise_linux_ai:3", "fix_state": "Not affected", "package_name": "rhelai3/bootc-gcp-cuda-rhel9", "product_name": "Red Hat Enterprise Linux AI (RHEL AI) 3"}, {"cpe": "cpe:/a:redhat:enterprise_linux_ai:3", "fix_state": "Not affected", "package_name": "rhelai3/bootc-rocm-rhel9", "product_name": "Red Hat Enterprise Linux AI (RHEL AI) 3"}, {"cpe": "cpe:/a:redhat:openshift_ai", "fix_state": "Affected", "package_name": "rhoai/odh-vllm-gaudi-rhel9", "product_name": "Red Hat OpenShift AI (RHOAI)"}], "public_date": "2026-11-09T19:12:04Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-125262\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-125262\nhttps://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/25067\nhttps://github.com/FFmpeg/FFmpeg\nhttps://github.com/FFmpeg/FFmpeg/blob/n9.0.2/libavcodec/lcevcdec.c#L224\nhttps://github.com/FFmpeg/FFmpeg/commit/fd6dfa613a48665dcb8d14186b33dad90aa40ae0\nhttps://www.vulncheck.com/advisories/ffmpeg-through-9.0.2-heap-buffer-overflow-via-lcevc-enhancement-decoding"], "statement": "To exploit this issue, an attacker needs to convince a user to decode a specially crafted H.264 or HEVC video file, limiting its exposure. However, because this vulnerability involves a heap buffer overflow that can lead to memory corruption and potentially result in arbitrary code execution, this flaw has been rated with an important severity.", "threat_severity": "Important"}

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