CVE-2026-120245

FFmpeg 0.10 through 9.0.2 contains a use of uninitialized resource vulnerability in sunrast_decode_frame() that leaks heap memory when decoding truncated 1-bit and 4-bit paletted Sun Raster images. Attackers can craft a truncated Sun Raster file so the uncleared temporary bitmap is expanded into PAL8 pixels, exposing stale heap contents such as allocator words in decoded output.

Database specific

{
    "cna_assigner": "VulnCheck",
    "cwe_ids": [
        "CWE-908"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/120xxx/CVE-2026-120245.json"
}

References

Affected packages

Git / github.com/ffmpeg/ffmpeg

Affected ranges

Type

GIT

Repo

https://github.com/ffmpeg/ffmpeg

Events

Introduced

7e16636995fd6710164f7622cd77abc94c27a064

Fixed

356a391bf57df2fb80fd61f2821c8c83d15ce180

Fixed

66b6ca270b33fd74367d7d371f6de16ec664446e

Database specific

Show details

{
    "extracted_events": [
        {
            "range": [
                {
                    "introduced": "0.10"
                },
                {
                    "last_affected": "9.0.2"
                }
            ],
            "source": "AFFECTED_FIELD",
            "strategy": "StandardRange"
        },
        {
            "range": [
                {
                    "fixed": "356a391bf57df2fb80fd61f2821c8c83d15ce180"
                }
            ],
            "source": "REFERENCES_COMMIT"
        },
        {
            "range": [
                {
                    "fixed": "66b6ca270b33fd74367d7d371f6de16ec664446e"
                }
            ],
            "source": "REFERENCES_COMMIT"
        }
    ]
}

Database specific

source

"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-120245.json"

vanir_signatures

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    {
        "deprecated": false,
        "digest": {
            "function_hash": "121470427011164342612608011699446206092",
            "length": 4630
        },
        "id": "CVE-2026-120245-043a02e4",
        "signature_type": "Function",
        "signature_version": "v1",
        "source": "https://github.com/ffmpeg/ffmpeg/commit/66b6ca270b33fd74367d7d371f6de16ec664446e",
        "target": {
            "file": "libavcodec/sunrast.c",
            "function": "sunrast_decode_frame"
        }
    },
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        "digest": {
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        "signature_version": "v1",
        "source": "https://github.com/ffmpeg/ffmpeg/commit/356a391bf57df2fb80fd61f2821c8c83d15ce180",
        "target": {
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            "function": "sunrast_decode_frame"
        }
    },
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        "signature_version": "v1",
        "source": "https://github.com/ffmpeg/ffmpeg/commit/66b6ca270b33fd74367d7d371f6de16ec664446e",
        "target": {
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        }
    },
    {
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        "digest": {
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        "source": "https://github.com/ffmpeg/ffmpeg/commit/356a391bf57df2fb80fd61f2821c8c83d15ce180",
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]

vanir_signatures_modified

"2026-11-04T07:05:52Z"