Ffmpeg: ffmpeg: heap use-after-free read in rasc decoder decode_move()_CVE-2026-12706

{
    "lastseen": "",
    "description": "A use-after-free vulnerability was found in FFmpeg's RASC video decoder. The decode_move() function initializes a read pointer into a decompressed buffer, but a subsequent reallocation of that same buffer during move-table processing leaves the pointer dangling. An attacker could exploit this by providing a specially crafted AVI file containing a malicious RASC video stream. When a user opens or plays the file, the decoder reads from freed heap memory, which could lead to a denial of service (crash).",
    "published": "2026-06-19T10:55:03.634Z",
    "modified": "2026-06-19T11:00:32.073Z",
    "type": "cve",
    "title": "Ffmpeg: ffmpeg: heap use-after-free read in rasc decoder decode_move()",
    "source": "redhat",
    "references": "https://access.redhat.com/security/cve/CVE-2026-12706\nhttps://bugzilla.redhat.com/show_bug.cgi?id=2490710\nhttps://lists.ffmpeg.org/archives/list/[email protected]/message/TTRIJZA7UL6KJTEDMMBGZPLLJERJ3EFX/\nhttps://patchwork.ffmpeg.org/project/ffmpeg/patch/177766314111.63.10674887811034989327@29965ddac10e/",
    "id": "CVE-2026-12706",
    "bulletinFamily": "",
    "cwe": [
        "CWE-416"
    ],
    "cvelist": null,
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    "cvss": {
        "score": 6.5,
        "severity": "MEDIUM",
        "vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
        "version": "3.1"
    },
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    "href": "",
    "category_name": "CVE",
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    "product": "Red Hat Enterprise Linux AI (RHEL AI) 3",
    "version": "",
    "vendor": "Red Hat",
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}