CVE-2026-93536

Full vulnerability record from the local CVENow database.

Description

A use after free caused by missing lifecycle management of gesture sprites in GestureBuildSprite() in X.Org X Server before 21.1.25 and XWayland before 24.1.14 could be used by authenticated X clients to crash the X server or potentially execute code.

Severity

MEDIUM

CVSS score

5.3 (v3.1)

Vulnerability status

Awaiting Analysis

Source identifier

[email protected]

Published

2026-10-28 17:18:53.463000

Last modified

2026-10-29 15:04:37.187000

View original CVE JSON

{
  "id": "CVE-2026-93536",
  "sourceIdentifier": "[email protected]",
  "published": "2026-10-28T17:18:53.463",
  "lastModified": "2026-10-29T15:04:37.187",
  "vulnStatus": "Awaiting Analysis",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "A use after free caused by missing lifecycle management of gesture sprites in GestureBuildSprite() in X.Org X Server before 21.1.25 and XWayland before 24.1.14 could be used by authenticated X clients to crash the X server or potentially execute code."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "x.org",
          "product": "xorg-x11-server",
          "defaultStatus": "unaffected",
          "packageName": "xorg-x11-server",
          "repo": "https://gitlab.freedesktop.org/xorg/xserver",
          "versions": [
            {
              "version": "0",
              "lessThan": "21.1.25",
              "versionType": "rpm",
              "status": "affected"
            }
          ]
        },
        {
          "vendor": "x.org",
          "product": "xwayland",
          "defaultStatus": "unaffected",
          "packageName": "xwayland",
          "repo": "https://gitlab.freedesktop.org/xorg/xserver",
          "versions": [
            {
              "version": "0",
              "lessThan": "24.1.14",
              "versionType": "rpm",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "[email protected]",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:H",
          "baseScore": 5.3,
          "baseSeverity": "MEDIUM",
          "attackVector": "LOCAL",
          "attackComplexity": "HIGH",
          "privilegesRequired": "LOW",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "LOW",
          "integrityImpact": "NONE",
          "availabilityImpact": "HIGH"
        },
        "exploitabilityScore": 1.0,
        "impactScore": 4.2
      }
    ]
  },
  "weaknesses": [
    {
      "source": "[email protected]",
      "type": "Primary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-122"
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://gitlab.freedesktop.org/xorg/xserver/-/commit/efcfd8acc754c5ac4b2555ff375dd5101d735b0a",
      "source": "[email protected]"
    }
  ]
}