CVE-2026-109088 (GCVE-0-2026-109088)
Vulnerability from cvelistv5
Published
2026-10-27 16:26
Modified
2026-10-27 16:26
CWE
  • CWE-835 - Loop with unreachable exit condition ('infinite loop')
Summary
A malicious X server could send malformed  RECORD EnableContext reolies that can cause a X client using the parse_reply_call_callback function in libXtst before 1.2.6 to enter a endless loop.
Impacted products
Vendor Product Version
X.org libXtst Version: 0   < 1.2.6
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Show details on NVD website


{
  "containers": {
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      "affected": [
        {
          "defaultStatus": "unaffected",
          "packageName": "libXtst",
          "product": "libXtst",
          "repo": "https://gitlab.freedesktop.org/xorg/lib/libxtst",
          "vendor": "X.org",
          "versions": [
            {
              "lessThan": "1.2.6",
              "status": "affected",
              "version": "0",
              "versionType": "rpm"
            }
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      "cpeApplicability": [
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              "cpeMatch": [
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                  "criteria": "cpe:2.3:a:x.org:libxtst:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "1.2.6",
                  "versionStartIncluding": "0",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
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          ],
          "operator": "OR"
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      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "Kaya Emre Arikan"
        }
      ],
      "datePublic": "2026-10-27T16:10:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "A malicious X server could send malformed\u0026nbsp;\u0026nbsp;\u003cspan\u003eRECORD EnableContext\u003c/span\u003e\u0026nbsp;reolies that can cause a X client using the\u0026nbsp;\u003cspan\u003eparse_reply_call_callback function in libXtst before 1.2.6 to enter a endless loop.\u0026nbsp;\u003c/span\u003e"
            }
          ],
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        }
      ],
      "impacts": [
        {
          "capecId": "CAPEC-227",
          "descriptions": [
            {
              "lang": "en",
              "value": "CAPEC-227 Sustained Client Engagement"
            }
          ]
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 6.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
            "version": "3.1"
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          "scenarios": [
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      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-835",
              "description": "CWE-835 Loop with unreachable exit condition (\u0027infinite loop\u0027)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-27T16:26:20.597Z",
        "orgId": "404e59f5-483d-4b8a-8e7a-e67604dd8afb",
        "shortName": "suse"
      },
      "references": [
        {
          "tags": [
            "patch"
          ],
          "url": "https://gitlab.freedesktop.org/xorg/lib/libxtst/-/merge_requests/11"
        }
      ],
      "source": {
        "discovery": "EXTERNAL"
      },
      "title": "libXtst RECORD EnableContext Reply Endless Loop",
      "x_generator": {
        "engine": "Vulnogram 1.0.5"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "404e59f5-483d-4b8a-8e7a-e67604dd8afb",
    "assignerShortName": "suse",
    "cveId": "CVE-2026-109088",
    "datePublished": "2026-10-27T16:26:20.597Z",
    "dateReserved": "2026-10-12T06:41:23.778Z",
    "dateUpdated": "2026-10-27T16:26:20.597Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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