libde265 has an unbounded memory leak via orphaned slice headers in `read_slice_NAL`_CVE-2026-49337

{
    "lastseen": "",
    "description": "libde265 is an open source implementation of the h.265 video codec. Prior to version 1.0.20, a crafted sequence of H.265 NAL units causes `decoder_context::read_slice_NAL()` (`libde265/decctx.cc:481`) to attach slice headers to a finished picture object\nthat has no active image unit, resulting in attacker-controlled unbounded heap growth. The retained headers are never freed until the picture is released, which may not happen during continuous streaming. Version 1.0.20 patches the issue.",
    "published": "2026-06-19T19:53:18.817Z",
    "modified": "2026-06-19T20:10:36.194Z",
    "type": "cve",
    "title": "libde265 has an unbounded memory leak via orphaned slice headers in `read_slice_NAL`",
    "source": "GitHub_M",
    "references": "https://github.com/strukturag/libde265/security/advisories/GHSA-g5hj-rf9f-7vxm\nhttps://github.com/strukturag/libde265/commit/683cb9fa603e35840642f98765ab95cdb71cadf9",
    "id": "CVE-2026-49337",
    "bulletinFamily": "",
    "cwe": [
        "CWE-770"
    ],
    "cvelist": null,
    "sourceData": "strukturag libde265 < 1.0.20",
    "sourceHref": "",
    "cvss": {
        "score": 4.3,
        "severity": "MEDIUM",
        "vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L",
        "version": "3.1"
    },
    "cvss2": [],
    "cvss3": {
        "version": "",
        "vectorString": "",
        "baseScore": 0,
        "baseSeverity": "",
        "attackVector": "",
        "attackComplexity": "",
        "privilegesRequired": "",
        "userInteraction": "",
        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
            "version": "",
            "vectorString": "",
            "baseScore": 0,
            "baseSeverity": "",
            "attackVector": "",
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            "privilegesRequired": "",
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            "availabilityImpact": ""
        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "libde265",
    "version": "< 1.0.20",
    "vendor": "strukturag",
    "ai_description": "",
    "ai_severity": "",
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    "ai_score": 0
}