CVE-2026-50262

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Source
https://cve.org/CVERecord?id=CVE-2026-50262
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-50262.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2026-50262
Downstream
Related
Published
2026-06-05T10:36:43.916Z
Modified
2026-07-15T08:26:51.727789Z
Severity
  • 5.5 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N CVSS Calculator
Summary
Xorg-x11-server: xorg-x11-server-xwayland: xorg-x11-server: out-of-bounds read/write in glx changedrawableattributes
Details

An out-of-bounds read flaw was found in the X.Org X server and Xwayland in _glXDispChangeDrawableAttributes(). A wrong size validation check can read a client-controlled number of bytes, exceeding the request buffer, leading to information disclosure. A write path also exists but requires byte-swapped clients which is disabled by default.

Database specific 
{
    "cwe_ids": [
        "CWE-125"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/50xxx/CVE-2026-50262.json",
    "cna_assigner": "redhat"
}
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
6d459e4daf715bea8abdafa8fb130be2f8a1d145
Database specific 
{
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "21.1.23"
        },
        {
            "fixed": "24.1.12"
        },
        {
            "introduced": "7.0"
        },
        {
            "last_affected": "7.0"
        }
    ],
    "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:*:*:*:*:*:*:*"
    ],
    "source": [
        "CPE_RANGE",
        "CPE_STRING",
        "REFERENCES"
    ]
}

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

vanir_signatures 
[
    {
        "signature_type": "Function",
        "deprecated": false,
        "signature_version": "v1",
        "digest": {
            "length": 607.0,
            "function_hash": "337823440673555809673235982485047194654"
        },
        "source": "https://gitlab.freedesktop.org/xorg/xserver@6d459e4daf715bea8abdafa8fb130be2f8a1d145",
        "id": "CVE-2026-50262-21a72d19",
        "target": {
            "function": "__glXDispSwap_ChangeDrawableAttributes",
            "file": "glx/glxcmdsswap.c"
        }
    },
    {
        "signature_type": "Line",
        "deprecated": false,
        "signature_version": "v1",
        "digest": {
            "line_hashes": [
                "314941157311566102858532570615919702078",
                "25431947025853286958043397180701641403",
                "277474742258934529213566089538664858275",
                "8540116371128976679224005019566170853",
                "59925167872029689382594595938285188973",
                "204841025301908160873785730762466180157",
                "164102030167567817768651962744088432945",
                "276189775054592625071922857762206671211",
                "20192578811593238329053359225122600841",
                "267630896780223581293939379964571373877",
                "217959892535251460003421966202732632952",
                "61162982866860950961818164503280639810",
                "56148691329774058057171434899974829461",
                "332695998404402607694407759267482259102",
                "172733474400934478643360900168738436181",
                "85996758324383419640270949311529019658",
                "128343278385068447666216863609191089829",
                "2125711494981184912524083787284132063",
                "237595033885843629434109160453855665015",
                "158824882907527400098473559013434971614",
                "132010271090069369116354100070194510330",
                "169601090112700168425598182537800219274",
                "315930455310053563812643379844228033213",
                "78855028910210670447758533589415598109",
                "267042158487724752683307508016427208058",
                "108691194910981797360235040468495147297"
            ],
            "threshold": 0.9
        },
        "source": "https://gitlab.freedesktop.org/xorg/xserver@6d459e4daf715bea8abdafa8fb130be2f8a1d145",
        "id": "CVE-2026-50262-602d745b",
        "target": {
            "file": "glx/glxcmds.c"
        }
    },
    {
        "signature_type": "Line",
        "deprecated": false,
        "signature_version": "v1",
        "digest": {
            "line_hashes": [
                "25370179351830189005839504491750663307",
                "254276641879185278800192542566741044695",
                "221001697288940274544222276176940021859",
                "294299135003530668677725140428931945677",
                "112126078366595111797935394024003736486",
                "217307584156738970564740685292519668451",
                "337913872407959129023164285293705493680",
                "338108314324979132020562658127225553394",
                "124012932153972695139761074688724311150",
                "161614641573444198879935068520507463625",
                "207097315254363272240005818866156202358",
                "313973013831745177428832493897486107801",
                "241251848711991134273467910826846334563",
                "291804667163096719435690442313760654739",
                "37693273894014429580367382158951118756",
                "217672628789864441977790233982200766171",
                "214102487584115646929917551254744026563",
                "162511620517698364213188482077045647292",
                "85673214598927690623273137244108739009",
                "256189422928725096962218300146731389809",
                "152940464489440873838356201744660067966",
                "268145474161076745782542365706659728943"
            ],
            "threshold": 0.9
        },
        "source": "https://gitlab.freedesktop.org/xorg/xserver@6d459e4daf715bea8abdafa8fb130be2f8a1d145",
        "id": "CVE-2026-50262-8949b596",
        "target": {
            "file": "glx/glxcmdsswap.c"
        }
    },
    {
        "signature_type": "Function",
        "deprecated": false,
        "signature_version": "v1",
        "digest": {
            "length": 512.0,
            "function_hash": "27160199950307947393714801745170591696"
        },
        "source": "https://gitlab.freedesktop.org/xorg/xserver@6d459e4daf715bea8abdafa8fb130be2f8a1d145",
        "id": "CVE-2026-50262-c0d7b111",
        "target": {
            "function": "__glXDisp_ChangeDrawableAttributes",
            "file": "glx/glxcmds.c"
        }
    }
]
source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-50262.json"
vanir_signatures_modified 
"2026-07-15T08:26:51Z"