CVE-2026-50264

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Source
https://cve.org/CVERecord?id=CVE-2026-50264
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-50264.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-50264
Downstream
Related
Published
2026-06-05T10:36:37.352Z
Modified
2026-08-13T11:56:56.221300076Z
Severity
  • 7.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
Summary
Xorg-x11-server: xorg-x11-server-xwayland: xorg-x11-server: out-of-bounds heap write in dri2 drigetbuffers/drigetbufferswithformat
Details

An out-of-bounds write flaw was found in the X.Org X server and Xwayland in DRIGetBuffers/DRIGetBuffersWithFormat. A client that requests multiple DRI2BufferBackLeft attachments and one DRI2BufferFrontLeft can trigger an out-of-bounds heap write. This may be used to crash the server, or for privilege escalation if the X server runs as root.

Database specific 
{
    "cna_assigner": "redhat",
    "cwe_ids": [
        "CWE-787"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/50xxx/CVE-2026-50264.json"
}
References

Affected packages

Git / gitlab.freedesktop.org/xorg/xserver

Affected ranges

Type
GIT
Repo
https://gitlab.freedesktop.org/xorg/xserver
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
8570e9fcec845f68f0c90caa51fd7a24764ea220
Fixed
af4b3d7250366e1a3822919e41fcf66da4966af2
Introduced
0d7ec5c7d9b451066a079fe56bcc9722341a91ff
Fixed
339c279514326134b0878fc23ce6e9520440ce7f
Database specific
Show details 
{
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "21.1.23"
        },
        {
            "fixed": "24.1.12"
        },
        {
            "introduced": "7.0"
        },
        {
            "last_affected": "7.0"
        }
    ],
    "source": [
        "CPE_RANGE",
        "CPE_STRING",
        "REFERENCES"
    ],
    "cpe": [
        "cpe:2.3:a:x.org:x_server:*:*:*:*:*:*:*:*",
        "cpe:2.3:a:x.org:xwayland:*:*:*:*:*:*:*:*",
        "cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*"
    ]
}

Affected versions

7.*
7.0
Other
XORG-7_0
XORG-7_0_99_901
pre-xgldrop-merge
xorg-server-1_0_99_1
xorg-server-1_0_99_2
xorg-server-1_0_99_901
xorg-server-1_1_99_1
xorg-server-1_1_99_2
xorg-server-1.*
xorg-server-1.1.99.3
xorg-server-1.10.0
xorg-server-1.10.99.901
xorg-server-1.10.99.902
xorg-server-1.11.0
xorg-server-1.11.99.1
xorg-server-1.11.99.901
xorg-server-1.11.99.902
xorg-server-1.11.99.903
xorg-server-1.12.0
xorg-server-1.12.99.901
xorg-server-1.12.99.902
xorg-server-1.12.99.903
xorg-server-1.12.99.904
xorg-server-1.12.99.905
xorg-server-1.13.0
xorg-server-1.13.99.901
xorg-server-1.13.99.902
xorg-server-1.14.0
xorg-server-1.14.99.1
xorg-server-1.14.99.2
xorg-server-1.14.99.3
xorg-server-1.14.99.901
xorg-server-1.14.99.902
xorg-server-1.14.99.903
xorg-server-1.14.99.904
xorg-server-1.14.99.905
xorg-server-1.15.0
xorg-server-1.15.99.901
xorg-server-1.15.99.902
xorg-server-1.15.99.903
xorg-server-1.15.99.904
xorg-server-1.16.0
xorg-server-1.16.99.901
xorg-server-1.16.99.902
xorg-server-1.17.0
xorg-server-1.17.99.901
xorg-server-1.17.99.902
xorg-server-1.18.0
xorg-server-1.18.99.2
xorg-server-1.18.99.901
xorg-server-1.18.99.902
xorg-server-1.19.0
xorg-server-1.19.99.901
xorg-server-1.19.99.902
xorg-server-1.19.99.903
xorg-server-1.19.99.904
xorg-server-1.19.99.905
xorg-server-1.20.0
xorg-server-1.5.99.1
xorg-server-1.6.99.900
xorg-server-1.6.99.901
xorg-server-1.7.99.1
xorg-server-1.7.99.2
xorg-server-1.7.99.901
xorg-server-1.7.99.902
xorg-server-1.8.0
xorg-server-1.8.99.901
xorg-server-1.8.99.902
xorg-server-1.8.99.903
xorg-server-1.8.99.904
xorg-server-1.8.99.905
xorg-server-1.8.99.906
xorg-server-1.9.0
xorg-server-1.9.99.901
xorg-server-1.9.99.902
xorg-server-1.9.99.903
xorg-server-21.*
xorg-server-21.0.99.1
xorg-server-21.0.99.901
xorg-server-21.0.99.902
xorg-server-21.1.0
xorg-server-21.1.1
xorg-server-21.1.10
xorg-server-21.1.11
xorg-server-21.1.12
xorg-server-21.1.13
xorg-server-21.1.14
xorg-server-21.1.15
xorg-server-21.1.16
xorg-server-21.1.17
xorg-server-21.1.18
xorg-server-21.1.19
xorg-server-21.1.2
xorg-server-21.1.20
xorg-server-21.1.21
xorg-server-21.1.22
xorg-server-21.1.3
xorg-server-21.1.4
xorg-server-21.1.5
xorg-server-21.1.6
xorg-server-21.1.7
xorg-server-21.1.8
xorg-server-21.1.9
xwayland-24.*
xwayland-24.0.99.901
xwayland-24.0.99.902
xwayland-24.1.0
xwayland-24.1.1
xwayland-24.1.10
xwayland-24.1.11
xwayland-24.1.2
xwayland-24.1.3
xwayland-24.1.4
xwayland-24.1.5
xwayland-24.1.6
xwayland-24.1.7
xwayland-24.1.8
xwayland-24.1.9

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-50264.json"
vanir_signatures 
[
    {
        "signature_type": "Line",
        "source": "https://gitlab.freedesktop.org/xorg/xserver@339c279514326134b0878fc23ce6e9520440ce7f",
        "deprecated": false,
        "id": "CVE-2026-50264-491bf00f",
        "signature_version": "v1",
        "target": {
            "file": "hw/xfree86/dri2/dri2.c"
        },
        "digest": {
            "threshold": 0.9,
            "line_hashes": [
                "297112792290904602644888778669495454720",
                "330289514824469994081201747266004895762",
                "97032104450033985776297921584044577041",
                "109230967511801540401343779569058219065",
                "1019301618257969672046360089077559234",
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                "60325906892556560433973100935750303887",
                "868558710594283455364349593718665089",
                "49279420684199724378323863574297870377",
                "65904884392927776815848850575799517428",
                "232731246414994631801460978650227278018",
                "322383630104674118770187109261737793159",
                "17537867570138085752935126993597836114",
                "176404608047015387164536726342549520648",
                "7398620469875400707014101030785641971",
                "258711250138464909697056944886817449500",
                "31890938645713522799424534504429335032",
                "44775285084384776221153946499677867841",
                "164381845849604020705176339381797116078",
                "235502133809696765442318175560566319227",
                "124690073147458935463480770901484502635",
                "275431563596868115009533967185772409474",
                "48356549252247732302942627982463050031",
                "277821077624352220899554122464274381987",
                "298202072927150487708718683471818110360",
                "94037283485731553482520089455673056989",
                "79698331484379955550542814930905965789",
                "155028332588162220650128575410383733779",
                "183975650571758734337638237790406946736",
                "108129837945897755710266515648776648681",
                "332077249996537164809579786529849341950",
                "275577827473821413106710696239809607494",
                "246570614658161051008922165707441260244",
                "332357970336495090921145650760575056951",
                "133678095347467850626155181059044962627",
                "330924238190273039356113434086633034121",
                "139060810209927507768461044507283433284",
                "17530964017710294939290010416720522488",
                "275231212628067207173314369509158539082",
                "209734147629566407140409029797197472461",
                "278860209069032240003734664214164647576",
                "113888079853336451349742180742220801095",
                "84133425693430511245789583250193264216",
                "1591944608185429181318012605144669695",
                "65533322139816073319497422747983759082",
                "285651393117370011168060770682983231980"
            ]
        }
    },
    {
        "digest": {
            "function_hash": "94829926601429583588281653798347890887",
            "length": 2184.0
        },
        "source": "https://gitlab.freedesktop.org/xorg/xserver@339c279514326134b0878fc23ce6e9520440ce7f",
        "deprecated": false,
        "id": "CVE-2026-50264-bacbcf05",
        "signature_version": "v1",
        "signature_type": "Function",
        "target": {
            "function": "do_get_buffers",
            "file": "hw/xfree86/dri2/dri2.c"
        }
    }
]
vanir_signatures_modified 
"2026-08-12T16:25:37Z"