MediumFix available
xkbcomp — security advisory
Unchecked NULL pointer usage in ResolveStateAndPredicate in xkbcomp/compat.c in xkbcommon before 0.8.2 could be used by local attackers to crash (NULL pointer dereference) the xkbcommon parser by supplying a crafted keymap file with a no-op modmask expression.
- Products
- xkbcomp
- Affected versions
- Not specified
- Fixed versions
- 1.5.0-r0
- CVEs
- CVE-2018-15863
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 21:58 UTC · Revision 1
Source evidence
Unchecked NULL pointer usage in ResolveStateAndPredicate in xkbcomp/compat.c in xkbcommon before 0.8.2 could be used by local attackers to crash (NULL pointer dereference) the xkbcommon parser by supplying a crafted keymap file with a no-op modmask expression.
osv:ALPINE-CVE-2018-15863
xkbcomp
Fixed versions: 1.5.0-r0
xkbcomp
Fixed versions: 1.5.0-r0
xkbcomp
Fixed versions: 1.5.0-r0
xkbcomp
Fixed versions: 1.5.0-r0
xkbcomp
Fixed versions: 1.5.0-r0
xkbcomp
Fixed versions: 1.5.0-r0
xkbcomp
Fixed versions: 1.5.0-r0
Complete source record
{
"id": "a855e86886aa021db37cdc138f41b0e7e5ae1378127a0a7dd74405b82cf70b78",
"url": "https://osv.dev/vulnerability/ALPINE-CVE-2018-15863",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "ALPINE-CVE-2018-15863",
"summary": "Unchecked NULL pointer usage in ResolveStateAndPredicate in xkbcomp/compat.c in xkbcommon before 0.8.2 could be used by local attackers to crash (NULL pointer dereference) the xkbcommon parser by supplying a crafted keymap file with a no-op modmask expression.",
"evidence": "osv:ALPINE-CVE-2018-15863",
"products": [
{
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"evidence": "/affected/0/package/name"
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"evidence": "/affected/0/ranges"
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{
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"severity": "medium",
"structured": {
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"aliases": [
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"metrics": [
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"type": "CVSS_V3",
"score": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"
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"affected": [
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"package": {
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"package": {
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"package": {
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"ecosystem": "Alpine:v3.24"
},
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],
"modified": "2026-10-23T17:17:55.222288644Z",
"provider": "osv",
"upstream": [
"CVE-2018-15863"
],
"references": [
"https://security.alpinelinux.org/vuln/CVE-2018-15863"
]
},
"related_cves": [
{
"value": "CVE-2018-15863",
"evidence": "/upstream"
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],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 415067,
"published_at": "2018-08-25T21:29:02.483+00:00"
}