High
Xorg: xwayland: out-of-bounds write in createpointerbarrierclient()
Type: advisorySources: OSV
An out-of-bounds write flaw was found in X.Org and Xwayland. The function GetBarrierDevice() searches for the pointer device based on its device ID and returns the matching value, or supposedly NULL, if no match was found. However, the code will return the last element of the list if no matching device ID is found, which can lead to out-of-bounds memory access.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2025-26598
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 5 Nov 2026, 02:16 UTC · Revision 1
Source evidence
Xorg: xwayland: out-of-bounds write in createpointerbarrierclient()
core-osv · Original sourcePublished 25 Feb 2025, 15:54 UTC
An out-of-bounds write flaw was found in X.Org and Xwayland. The function GetBarrierDevice() searches for the pointer device based on its device ID and returns the matching value, or supposedly NULL, if no match was found. However, the code will return the last element of the list if no matching device ID is found, which can lead to out-of-bounds memory access.
osv:CVE-2025-26598
Complete source record
{
"id": "0ec5c486e7c8c5f037c3e04d18c0710b286bb0fd058bbed266de7289b00e795d",
"url": "https://osv.dev/vulnerability/CVE-2025-26598",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "Xorg: xwayland: out-of-bounds write in createpointerbarrierclient()",
"summary": "An out-of-bounds write flaw was found in X.Org and Xwayland. The function GetBarrierDevice() searches for the pointer device based on its device ID and returns the matching value, or supposedly NULL, if no match was found. However, the code will return the last element of the list if no matching device ID is found, which can lead to out-of-bounds memory access.",
"evidence": "osv:CVE-2025-26598",
"products": [],
"severity": "high",
"structured": {
"id": "CVE-2025-26598",
"aliases": [
"CVE-2025-26598"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://gitlab.freedesktop.org/xorg/xserver",
"type": "GIT",
"events": [
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},
{
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},
{
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}
],
"database_specific": {
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{
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],
"source": "AFFECTED_FIELD",
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},
{
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{
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]
}
}
],
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"xorg-server-1_0_99_2",
"xorg-server-1_0_99_1",
"XORG-7_0",
"pre-xgldrop-merge",
"XORG-6_99_99_904",
"MODULAR_COPY",
"XORG-6_99_99_903",
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"DRM-2_0_0",
"XORG-6_99_99_902",
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"XORG-MAIN",
"xfixes_2_branchpoint",
"keithp",
"xf-4_3_99_6",
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"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-26598.json"
}
}
],
"modified": "2026-10-28T02:30:41.878480498Z",
"provider": "osv",
"references": [
"https://access.redhat.com/downloads/content/package-browser/",
"https://lists.debian.org/debian-lts-announce/2025/02/msg00036.html",
"https://access.redhat.com/errata/RHSA-2025:2500",
"https://access.redhat.com/errata/RHSA-2025:2502",
"https://access.redhat.com/errata/RHSA-2025:2861",
"https://access.redhat.com/errata/RHSA-2025:2862",
"https://access.redhat.com/errata/RHSA-2025:2865",
"https://access.redhat.com/errata/RHSA-2025:2866",
"https://access.redhat.com/errata/RHSA-2025:2873",
"https://access.redhat.com/errata/RHSA-2025:2874",
"https://access.redhat.com/errata/RHSA-2025:2875",
"https://access.redhat.com/errata/RHSA-2025:2879",
"https://access.redhat.com/errata/RHSA-2025:2880",
"https://access.redhat.com/errata/RHSA-2025:3976",
"https://access.redhat.com/errata/RHSA-2025:7163",
"https://access.redhat.com/errata/RHSA-2025:7165",
"https://access.redhat.com/errata/RHSA-2025:7458",
"https://access.redhat.com/security/cve/CVE-2025-26598",
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/26xxx/CVE-2025-26598.json",
"https://nvd.nist.gov/vuln/detail/CVE-2025-26598",
"https://bugzilla.redhat.com/show_bug.cgi?id=2345254",
"https://gitlab.freedesktop.org/xorg/xserver/"
],
"provider_metadata": {
"cwe_ids": [
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],
"cna_assigner": "redhat",
"unresolved_ranges": [
{
"extracted_events": [
{
"range": [
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{
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],
"source": "AFFECTED_FIELD",
"strategy": "InverseAffectedRanges"
}
]
}
],
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/26xxx/CVE-2025-26598.json"
}
},
"related_cves": [
{
"value": "CVE-2025-26598",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 509447,
"published_at": "2025-02-25T15:54:57.355+00:00"
}