CVE-2026-125250

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{"bugzilla": {"description": "ffmpeg: heap buffer overflow via GIF encoder", "id": "2570659", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2570659"}, "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-122", "details": ["FFmpeg through 9.0.2 contains a heap buffer overflow in the GIF encoder's gif_image_write_image() in libavcodec/gif.c because shrunk_buf is sized from the first frame's linesize. Attackers can supply PAL8 video whose frame linesize grows mid-stream, causing remap_frame_to_palette() to write past shrunk_buf and corrupt the heap during GIF transcoding.", "A flaw was found in FFmpeg. A heap buffer overflow can occur in the GIF encoder when transcoding a specially crafted PAL8 video file due to a failure to resize the output buffer when the frame linesize grows mid-stream. This vulnerability can lead to memory corruption, potentially resulting in an application crash or arbitrary code execution."], "mitigation": {"lang": "en:us", "value": "Do not transcode untrusted PAL8 video files using FFmpeg."}, "name": "CVE-2026-125250", "package_state": [{"cpe": "cpe:/a:redhat:enterprise_linux_ai:3", "fix_state": "Affected", "package_name": "ffmpeg", "product_name": "Red Hat Enterprise Linux AI (RHEL AI) 3"}, {"cpe": "cpe:/a:redhat:enterprise_linux_ai:3", "fix_state": "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": "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": "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": "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": "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": "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": "2026-11-09T19:11:56Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-125250\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-125250\nhttps://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/25690\nhttps://github.com/FFmpeg/FFmpeg\nhttps://github.com/FFmpeg/FFmpeg/blob/n9.0.2/libavcodec/gif.c#L405\nhttps://github.com/FFmpeg/FFmpeg/commit/26c2980980295e5516f308c5a2792d2a72e43eae\nhttps://www.vulncheck.com/advisories/ffmpeg-through-9.0.2-gif-encoder-heap-buffer-overflow-via-shrunk-buf-remap"], "statement": "To exploit this issue, an attacker needs to convince a user to transcode a specially crafted PAL8 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"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,9.0.2]"}}], "enrichment": {"confidence": 95.0, "confidence_source": "inferred", "scores": [{"score": 95.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "FFmpeg", "source": "cna", "vendor": "FFmpeg"}, "product": "ffmpeg", "vendor": "ffmpeg"}], "created": "2026-11-09T21:30:11.193206+00:00", "updated": "2026-11-09T23:00:14.319978+00:00", "vendors": ["ffmpeg", "ffmpeg$PRODUCT$ffmpeg"]}