CVE-2026-49337

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Source
https://cve.org/CVERecord?id=CVE-2026-49337
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-49337.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-49337
Aliases
  • GHSA-g5hj-rf9f-7vxm
Downstream
Published
2026-06-19T19:53:18.817Z
Modified
2026-08-12T16:25:35.274127Z
Severity
  • 4.3 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L CVSS Calculator
Summary
libde265 has an unbounded memory leak via orphaned slice headers in `read_slice_NAL`
Details

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 that 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.

Database specific 
{
    "unresolved_ranges": [
        {
            "extracted_events": [
                {
                    "fixed": "1.0.20"
                }
            ],
            "source": "AFFECTED_FIELD"
        }
    ],
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-770"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/49xxx/CVE-2026-49337.json"
}
References

Affected packages

Git / github.com/strukturag/libde265

Affected ranges

Type
GIT
Repo
https://github.com/strukturag/libde265
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
683cb9fa603e35840642f98765ab95cdb71cadf9
Database specific
Show details 
{
    "source": "REFERENCES"
}

Affected versions

v0.*
v0.1
v0.2
v0.3
v0.4
v0.5
v1.*
v1.0.0
v1.0.10
v1.0.11
v1.0.12
v1.0.13
v1.0.14
v1.0.15
v1.0.16
v1.0.17
v1.0.18
v1.0.19
v1.0.3
v1.0.4
v1.0.5
v1.0.6
v1.0.7
v1.0.8
v1.0.9

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-49337.json"
vanir_signatures 
[
    {
        "target": {
            "file": "libde265/decctx.cc"
        },
        "deprecated": false,
        "source": "https://github.com/strukturag/libde265/commit/683cb9fa603e35840642f98765ab95cdb71cadf9",
        "id": "CVE-2026-49337-8a0c67ad",
        "signature_version": "v1",
        "digest": {
            "threshold": 0.9,
            "line_hashes": [
                "308017059897013009332312004414788111101",
                "154448604033742524859868092742083955422",
                "53185186494389715914467344214463994588",
                "246154045504594485536374272369326704021",
                "249955034762583277999241583817960127657",
                "252168484785008251522929439511643316872",
                "80761298340017504458651441661310094330",
                "107217141832055430305671969936467991463",
                "72553614427630057857004178305650827058",
                "113496585480083951707010847757990722257",
                "145141224231204054891003036945570419022"
            ]
        },
        "signature_type": "Line"
    },
    {
        "target": {
            "function": "decoder_context::read_slice_NAL",
            "file": "libde265/decctx.cc"
        },
        "deprecated": false,
        "source": "https://github.com/strukturag/libde265/commit/683cb9fa603e35840642f98765ab95cdb71cadf9",
        "id": "CVE-2026-49337-e71344f0",
        "signature_version": "v1",
        "digest": {
            "length": 1863.0,
            "function_hash": "262962431552888539897533394615984191100"
        },
        "signature_type": "Function"
    }
]
vanir_signatures_modified 
"2026-08-12T16:25:35Z"