UnratedFix available
s390/syscalls: Add spectre boundary for syscall dispatch table
Type: advisorySources: OSV
In the Linux kernel, the following vulnerability has been resolved: s390/syscalls: Add spectre boundary for syscall dispatch table The s390 syscall number is directly controlled by userspace, but does not have an array_index_nospec() boundary to prevent access past the syscall function pointer tables.
- Products
- Kernel
- Affected versions
- Not specified
- Fixed versions
- 5.15.203, 6.1.168, 6.12.80, 6.18.21, 6.19.11, 6.6.131
- CVEs
- CVE-2026-31483
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 2 Nov 2026, 18:04 UTC · Revision 1
Source evidence
s390/syscalls: Add spectre boundary for syscall dispatch table
core-osv · Original sourcePublished 22 Apr 2026, 13:54 UTC
In the Linux kernel, the following vulnerability has been resolved: s390/syscalls: Add spectre boundary for syscall dispatch table The s390 syscall number is directly controlled by userspace, but does not have an array_index_nospec() boundary to prevent access past the syscall function pointer tables.
osv:CVE-2026-31483
Kernel
Fixed versions: 5.15.203, 6.1.168, 6.6.131, 6.12.80, 6.18.21, 6.19.11
Complete source record
{
"id": "76d16c3ba344957119e12a7cd768929f882c2e65b30f740a756bbff3e08f6238",
"url": "https://osv.dev/vulnerability/CVE-2026-31483",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "s390/syscalls: Add spectre boundary for syscall dispatch table",
"summary": "In the Linux kernel, the following vulnerability has been resolved: s390/syscalls: Add spectre boundary for syscall dispatch table The s390 syscall number is directly controlled by userspace, but does not have an array_index_nospec() boundary to prevent access past the syscall function pointer tables.",
"evidence": "osv:CVE-2026-31483",
"products": [
{
"name": {
"value": "Kernel",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "5.15.203",
"evidence": "/affected/1/ranges"
},
{
"value": "6.1.168",
"evidence": "/affected/1/ranges"
},
{
"value": "6.6.131",
"evidence": "/affected/1/ranges"
},
{
"value": "6.12.80",
"evidence": "/affected/1/ranges"
},
{
"value": "6.18.21",
"evidence": "/affected/1/ranges"
},
{
"value": "6.19.11",
"evidence": "/affected/1/ranges"
}
],
"affected_versions": []
}
],
"severity": "unknown",
"structured": {
"id": "CVE-2026-31483",
"aliases": [
"CVE-2026-31483"
],
"affected": [
{
"ranges": [
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"type": "GIT",
"events": [
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},
{
"fixed": "3c3b97064764899c39a0abbd35a6caa031e70333"
},
{
"fixed": "1cb9c7bc9025c637564fabc7fcc3c9343949e310"
},
{
"fixed": "7a5260fbc6e79a1595328ec5c6aa3f937504a1f0"
},
{
"fixed": "f8c444b918d639e1f9a621ee20fe481c1d10dfc4"
},
{
"fixed": "87776f02449e3bded95b2ccbd6b012e9ae64e6f3"
},
{
"fixed": "4d05dd18d867d58c6952a3bc260d244899da7256"
},
{
"fixed": "48b8814e25d073dd84daf990a879a820bad2bcbd"
}
]
}
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-31483.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "5.12.0"
},
{
"fixed": "5.15.203"
}
]
},
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "5.16.0"
},
{
"fixed": "6.1.168"
}
]
},
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "6.2.0"
},
{
"fixed": "6.6.131"
}
]
},
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "6.7.0"
},
{
"fixed": "6.12.80"
}
]
},
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "6.13.0"
},
{
"fixed": "6.18.21"
}
]
},
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "6.19.0"
},
{
"fixed": "6.19.11"
}
]
}
],
"package": {
"name": "Kernel",
"ecosystem": "Linux"
},
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-31483.json"
}
}
],
"modified": "2026-10-28T02:30:22.033643614Z",
"provider": "osv",
"references": [
"https://git.kernel.org/stable/c/1cb9c7bc9025c637564fabc7fcc3c9343949e310",
"https://git.kernel.org/stable/c/3c3b97064764899c39a0abbd35a6caa031e70333",
"https://git.kernel.org/stable/c/48b8814e25d073dd84daf990a879a820bad2bcbd",
"https://git.kernel.org/stable/c/4d05dd18d867d58c6952a3bc260d244899da7256",
"https://git.kernel.org/stable/c/7a5260fbc6e79a1595328ec5c6aa3f937504a1f0",
"https://git.kernel.org/stable/c/87776f02449e3bded95b2ccbd6b012e9ae64e6f3",
"https://git.kernel.org/stable/c/f8c444b918d639e1f9a621ee20fe481c1d10dfc4",
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/31xxx/CVE-2026-31483.json",
"https://nvd.nist.gov/vuln/detail/CVE-2026-31483",
"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
],
"provider_metadata": {
"cna_assigner": "Linux",
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/31xxx/CVE-2026-31483.json"
}
},
"related_cves": [
{
"value": "CVE-2026-31483",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": null
},
"source_id": "core-osv",
"document_id": 488007,
"published_at": "2026-04-22T13:54:09.561+00:00"
}