Unrated

DEBIAN-CVE-2026-93542

Type: advisorySource: OSV1 source record

An out-of-bounds read in libXi's XI2 class parsing via size_classes() and copy_classes() in libXi before 1.8.4 could be used by malicous servers to crash the X client.

Announced 24 Sept 2026Group revision 1

Original source ↗

DEBIAN-CVE-2026-93542

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: osv:DEBIAN-CVE-2026-93542

libxi

Source reference: /affected/0/package/name

Affected versions: 2:1.8-1
Source reference: /affected/0/versions
2:1.8-1+hurd.1
Source reference: /affected/0/versions
2:1.8.1-1
Source reference: /affected/0/versions
2:1.8.2-1
Source reference: /affected/0/versions
2:1.8.2-2
Source reference: /affected/0/versions
2:1.8.3-1
Source reference: /affected/0/versions
Fixed versions: Not stated in this record
Prerequisites: Not stated in this record

libxi

Source reference: /affected/1/package/name

Affected versions: 2:1.8.2-1
Source reference: /affected/1/versions
2:1.8.2-2
Source reference: /affected/1/versions
2:1.8.3-1
Source reference: /affected/1/versions
Fixed versions: Not stated in this record
Prerequisites: Not stated in this record

libxi

Source reference: /affected/2/package/name

Affected versions: 2:1.8.2-1
Source reference: /affected/2/versions
2:1.8.2-2
Source reference: /affected/2/versions
2:1.8.3-1
Source reference: /affected/2/versions
Fixed versions: Not stated in this record
Prerequisites: Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          }
        ]
      }
    ],
    "package": {
      "name": "libxi",
      "purl": "pkg:deb/debian/libxi?arch=source&distro=bookworm",
      "ecosystem": "Debian:12"
    },
    "versions": [
      "2:1.8-1",
      "2:1.8-1+hurd.1",
      "2:1.8.1-1",
      "2:1.8.2-1",
      "2:1.8.2-2",
      "2:1.8.3-1"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-93542.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          }
        ]
      }
    ],
    "package": {
      "name": "libxi",
      "purl": "pkg:deb/debian/libxi?arch=source&distro=trixie",
      "ecosystem": "Debian:13"
    },
    "versions": [
      "2:1.8.2-1",
      "2:1.8.2-2",
      "2:1.8.3-1"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-93542.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          }
        ]
      }
    ],
    "package": {
      "name": "libxi",
      "purl": "pkg:deb/debian/libxi?arch=source&distro=forky",
      "ecosystem": "Debian:14"
    },
    "versions": [
      "2:1.8.2-1",
      "2:1.8.2-2",
      "2:1.8.3-1"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-93542.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  }
]

Publisher severity

No explicit severity was provided.

Event: #15007 · Revision 1
Added to Heist Feed: Sun, 25 Oct 2026 00:51:48 GMT
Publisher date: Thu, 24 Sep 2026 17:17:10 GMT

Read the original announcement

Revision history

25 Oct 2026DEBIAN-CVE-2026-93542 · Revision 1Source updated