Gstreamer1-plugins-bad-free: gstreamer: stack buffer overflow in h.265 buffering period sei parser_CVE-2026-53702

{
    "lastseen": "",
    "description": "A stack buffer overflow flaw was found in the GStreamer H.265 codec parser library (gst-plugins-bad). When parsing a buffering period SEI message, the parser uses an incorrect loop bound derived from cpb_cnt_minus1[i] (the loop index) instead of the sub-layer 0 CPB count cpb_cnt_minus1[0] from the referenced Sequence Parameter Set. A crafted H.265 video file or stream can cause the parser to write beyond the bounds of stack-allocated CPB delay arrays, resulting in a crash or potential stack memory corruption.",
    "published": "2026-06-11T18:15:38.857Z",
    "modified": "2026-06-11T18:15:38.857Z",
    "type": "cve",
    "title": "Gstreamer1-plugins-bad-free: gstreamer: stack buffer overflow in h.265 buffering period sei parser",
    "source": "redhat",
    "references": "https://access.redhat.com/security/cve/CVE-2026-53702\nhttps://bugzilla.redhat.com/show_bug.cgi?id=2487612",
    "id": "CVE-2026-53702",
    "bulletinFamily": "",
    "cwe": [
        "CWE-787"
    ],
    "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"
    },
    "cvss2": [],
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        "baseScore": 0,
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        "cvssV3": {
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    "href": "",
    "category_name": "CVE",
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    "product": "Red Hat Enterprise Linux 10",
    "version": "",
    "vendor": "Red Hat",
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}