CVE-2026-75147

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Source
https://cve.org/CVERecord?id=CVE-2026-75147
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-75147.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-75147
Downstream
CGA (38)
DEBIAN (1)
ECHO (1)
openSUSE (3)
UBUNTU (1)
Related
openSUSE (3)
Published
2026-08-19T16:29:03Z
Modified
2026-10-08T07:39:16Z
Severity
  • 6.9 (Medium) CVSS_V4 - CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:N/VA:H/SC:N/SI:N/SA:N CVSS Calculator
Summary
FFmpeg Out-of-Bounds Read in AV1 RTP Packetizer via rtpenc_av1.c
Details

FFmpeg before commit 983dae9 contains an out-of-bounds read in the AV1 RTP packetizer (libavformat/rtpenc_av1.c). The keyframe detection loop that searches for a sequence header OBU advanced its pointer and remaining-size counter by the encoded header length plus the OBU payload size without first bounding the OBU size against the remaining data. A crafted OBU size causes the remaining-size counter to wrap to a positive value, causing the next loop iteration to dereference a pointer beyond the end of the packet buffer. A crafted AV1 input packet muxed to RTP triggers the out-of-bounds read.

Database specific 
{
    "cna_assigner": "VulnCheck",
    "cwe_ids": [
        "CWE-125"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/75xxx/CVE-2026-75147.json"
}
References

Affected packages

Git / code.ffmpeg.org/FFmpeg/FFmpeg

Affected ranges

Type
GIT
Repo
https://code.ffmpeg.org/FFmpeg/FFmpeg
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
983dae9c19f46c87d597598c0fd2f2fcee0ad2f8

Affected versions

Other
N
n0.*
n0.11-dev
n0.12-dev
n0.8
n1.*
n1.1-dev
n1.2-dev
n1.3-dev
n2.*
n2.0
n2.1-dev
n2.2-dev
n2.3-dev
n2.4-dev
n2.5-dev
n2.6-dev
n2.7-dev
n2.8-dev
n2.9-dev
n3.*
n3.1-dev
n3.2-dev
n3.3-dev
n3.4-dev
n3.5-dev
n4.*
n4.1-dev
n4.2-dev
n4.3-dev
n4.4-dev
n4.5-dev
n5.*
n5.1-dev
n5.2-dev
n6.*
n6.1-dev
n6.2-dev
n7.*
n7.1-dev
n7.2-dev
n8.*
n8.1-dev
n8.2-dev
n9.*
n9.1-dev

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-75147.json"
vanir_signatures 
[
    {
        "deprecated": false,
        "digest": {
            "line_hashes": [
                "275712041044194039918737384177752118465",
                "112030629390621996673565528790491551613",
                "168278039734422158952887987073227306153",
                "7406117684115968516287365129868063248",
                "282232263147983420017211581711086690635"
            ],
            "threshold": 0.9
        },
        "id": "CVE-2026-75147-427036ae",
        "signature_type": "Line",
        "signature_version": "v1",
        "source": "https://code.ffmpeg.org/FFmpeg/FFmpeg@983dae9c19f46c87d597598c0fd2f2fcee0ad2f8",
        "target": {
            "file": "libavformat/rtpenc_av1.c"
        }
    },
    {
        "deprecated": false,
        "digest": {
            "function_hash": "180879282261187805380209169201252525754",
            "length": 5569
        },
        "id": "CVE-2026-75147-dca06188",
        "signature_type": "Function",
        "signature_version": "v1",
        "source": "https://code.ffmpeg.org/FFmpeg/FFmpeg@983dae9c19f46c87d597598c0fd2f2fcee0ad2f8",
        "target": {
            "file": "libavformat/rtpenc_av1.c",
            "function": "ff_rtp_send_av1"
        }
    }
]
vanir_signatures_modified 
"2026-10-08T07:39:16Z"