Medium
libxi — security advisory
An out-of-bounds read in libXi's XI2 XIQueryDevice reply parsing in libXi before 1.8.4 can be used by a malicious X server to crash an attached X client.
- Products
- libxi
- Affected versions
- 2:1.7.10-0ubuntu1, 2:1.7.10-1build2, 2:1.7.10-1build3, 2:1.7.4-1, 2:1.7.5-1, 2:1.7.6-1, 2:1.7.6-1ubuntu0.1~esm1, 2:1.7.9-1, 2:1.8-1, 2:1.8-1build1, 2:1.8.1-1, 2:1.8.1-1build1, 2:1.8.2-1, 2:1.8.2-2
- Fixed versions
- Not specified
- CVEs
- CVE-2026-93544
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 03:32 UTC · Revision 1
Source evidence
An out-of-bounds read in libXi's XI2 XIQueryDevice reply parsing in libXi before 1.8.4 can be used by a malicious X server to crash an attached X client.
osv:UBUNTU-CVE-2026-93544
libxi
Fixed versions: Not specified
libxi
Fixed versions: Not specified
libxi
Fixed versions: Not specified
libxi
Fixed versions: Not specified
libxi
Fixed versions: Not specified
libxi
Fixed versions: Not specified
libxi
Fixed versions: Not specified
Complete source record
{
"id": "30eaf588ebe53755aff4e2ad5391a29f799e318ddcbac367bb3136fc80e0136d",
"url": "https://osv.dev/vulnerability/UBUNTU-CVE-2026-93544",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "UBUNTU-CVE-2026-93544",
"summary": "An out-of-bounds read in libXi's XI2 XIQueryDevice reply parsing in libXi before 1.8.4 can be used by a malicious X server to crash an attached X client.",
"evidence": "osv:UBUNTU-CVE-2026-93544",
"products": [
{
"name": {
"value": "libxi",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "2:1.7.4-1",
"evidence": "/affected/0/versions"
},
{
"value": "2:1.7.5-1",
"evidence": "/affected/0/versions"
},
{
"value": "2:1.7.6-1",
"evidence": "/affected/0/versions"
},
{
"value": "2:1.7.6-1ubuntu0.1~esm1",
"evidence": "/affected/0/versions"
}
]
},
{
"name": {
"value": "libxi",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
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"affected_versions": [
{
"value": "2:1.7.9-1",
"evidence": "/affected/1/versions"
}
]
},
{
"name": {
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"evidence": "/affected/2/package/name"
},
"prerequisites": [],
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"affected_versions": [
{
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},
{
"name": {
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"evidence": "/affected/3/package/name"
},
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"affected_versions": [
{
"value": "2:1.7.10-1build2",
"evidence": "/affected/3/versions"
},
{
"value": "2:1.7.10-1build3",
"evidence": "/affected/3/versions"
},
{
"value": "2:1.8-1",
"evidence": "/affected/3/versions"
},
{
"value": "2:1.8-1build1",
"evidence": "/affected/3/versions"
}
]
},
{
"name": {
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"evidence": "/affected/4/package/name"
},
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"affected_versions": [
{
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"evidence": "/affected/4/versions"
},
{
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"evidence": "/affected/4/versions"
},
{
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"evidence": "/affected/4/versions"
}
]
},
{
"name": {
"value": "libxi",
"evidence": "/affected/5/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "2:1.8.2-2",
"evidence": "/affected/5/versions"
}
]
},
{
"name": {
"value": "libxi",
"evidence": "/affected/6/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "2:1.8.2-1",
"evidence": "/affected/6/versions"
},
{
"value": "2:1.8.2-2",
"evidence": "/affected/6/versions"
}
]
}
],
"severity": "medium",
"structured": {
"id": "UBUNTU-CVE-2026-93544",
"aliases": [
"UBUNTU-CVE-2026-93544"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "libxi",
"purl": "pkg:deb/ubuntu/libxi?arch=source&distro=esm-infra%2Fxenial",
"ecosystem": "Ubuntu:Pro:16.04:LTS"
},
"versions": [
"2:1.7.4-1",
"2:1.7.5-1",
"2:1.7.6-1",
"2:1.7.6-1ubuntu0.1~esm1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-93544.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "libxi6",
"binary_version": "2:1.7.6-1ubuntu0.1~esm1"
}
]
}
},
{
"ranges": [
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]
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],
"package": {
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"ecosystem": "Ubuntu:18.04:LTS"
},
"versions": [
"2:1.7.9-1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-93544.json"
},
"ecosystem_specific": {
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}
},
{
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],
"package": {
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"purl": "pkg:deb/ubuntu/libxi?arch=source&distro=focal",
"ecosystem": "Ubuntu:20.04:LTS"
},
"versions": [
"2:1.7.10-0ubuntu1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-93544.json"
},
"ecosystem_specific": {
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}
]
}
},
{
"ranges": [
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}
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],
"package": {
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"purl": "pkg:deb/ubuntu/libxi?arch=source&distro=jammy",
"ecosystem": "Ubuntu:22.04:LTS"
},
"versions": [
"2:1.7.10-1build2",
"2:1.7.10-1build3",
"2:1.8-1",
"2:1.8-1build1"
],
"database_specific": {
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},
"ecosystem_specific": {
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},
{
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],
"package": {
"name": "libxi",
"purl": "pkg:deb/ubuntu/libxi?arch=source&distro=noble",
"ecosystem": "Ubuntu:24.04:LTS"
},
"versions": [
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"2:1.8.1-1",
"2:1.8.1-1build1"
],
"database_specific": {
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},
"ecosystem_specific": {
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{
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"package": {
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},
"versions": [
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],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-93544.json"
},
"ecosystem_specific": {
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},
{
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],
"package": {
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"ecosystem": "Ubuntu:26.04:LTS"
},
"versions": [
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"2:1.8.2-2"
],
"database_specific": {
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},
"ecosystem_specific": {
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}
]
}
}
],
"modified": "2026-10-17T13:01:17.929185558Z",
"provider": "osv",
"upstream": [
"CVE-2026-93544"
],
"references": [
"https://ubuntu.com/security/CVE-2026-93544",
"https://www.cve.org/CVERecord?id=CVE-2026-93544"
]
},
"related_cves": [
{
"value": "CVE-2026-93544",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 361548,
"published_at": "2026-09-24T17:17:00+00:00"
}