gsd-2023-52639
Vulnerability from gsd
Modified
2024-03-07 06:01
Details
In the Linux kernel, the following vulnerability has been resolved:
KVM: s390: vsie: fix race during shadow creation
Right now it is possible to see gmap->private being zero in
kvm_s390_vsie_gmap_notifier resulting in a crash. This is due to the
fact that we add gmap->private == kvm after creation:
static int acquire_gmap_shadow(struct kvm_vcpu *vcpu,
struct vsie_page *vsie_page)
{
[...]
gmap = gmap_shadow(vcpu->arch.gmap, asce, edat);
if (IS_ERR(gmap))
return PTR_ERR(gmap);
gmap->private = vcpu->kvm;
Let children inherit the private field of the parent.
Aliases
{
"gsd": {
"metadata": {
"exploitCode": "unknown",
"remediation": "unknown",
"reportConfidence": "confirmed",
"type": "vulnerability"
},
"osvSchema": {
"aliases": [
"CVE-2023-52639"
],
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nKVM: s390: vsie: fix race during shadow creation\n\nRight now it is possible to see gmap-\u003eprivate being zero in\nkvm_s390_vsie_gmap_notifier resulting in a crash. This is due to the\nfact that we add gmap-\u003eprivate == kvm after creation:\n\nstatic int acquire_gmap_shadow(struct kvm_vcpu *vcpu,\n struct vsie_page *vsie_page)\n{\n[...]\n gmap = gmap_shadow(vcpu-\u003earch.gmap, asce, edat);\n if (IS_ERR(gmap))\n return PTR_ERR(gmap);\n gmap-\u003eprivate = vcpu-\u003ekvm;\n\nLet children inherit the private field of the parent.",
"id": "GSD-2023-52639",
"modified": "2024-03-07T06:01:45.344082Z",
"schema_version": "1.4.0"
}
},
"namespaces": {
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"ASSIGNER": "cve@kernel.org",
"ID": "CVE-2023-52639",
"STATE": "PUBLIC"
},
"affects": {
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"product": {
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{
"product_name": "Linux",
"version": {
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{
"version_affected": "\u003c",
"version_name": "a3508fbe9dc6",
"version_value": "5df3b81a567e"
},
{
"version_value": "not down converted",
"x_cve_json_5_version_data": {
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"versions": [
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"version": "4.8"
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{
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"status": "unaffected",
"version": "0",
"versionType": "custom"
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{
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"status": "unaffected",
"version": "6.1.82",
"versionType": "custom"
},
{
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"status": "unaffected",
"version": "6.6.22",
"versionType": "custom"
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{
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"version": "6.7.6",
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nKVM: s390: vsie: fix race during shadow creation\n\nRight now it is possible to see gmap-\u003eprivate being zero in\nkvm_s390_vsie_gmap_notifier resulting in a crash. This is due to the\nfact that we add gmap-\u003eprivate == kvm after creation:\n\nstatic int acquire_gmap_shadow(struct kvm_vcpu *vcpu,\n struct vsie_page *vsie_page)\n{\n[...]\n gmap = gmap_shadow(vcpu-\u003earch.gmap, asce, edat);\n if (IS_ERR(gmap))\n return PTR_ERR(gmap);\n gmap-\u003eprivate = vcpu-\u003ekvm;\n\nLet children inherit the private field of the parent."
}
]
},
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"name": "https://git.kernel.org/stable/c/5df3b81a567eb565029563f26f374ae3803a1dfc",
"refsource": "MISC",
"url": "https://git.kernel.org/stable/c/5df3b81a567eb565029563f26f374ae3803a1dfc"
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},
"nvd.nist.gov": {
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"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nKVM: s390: vsie: fix race during shadow creation\n\nRight now it is possible to see gmap-\u003eprivate being zero in\nkvm_s390_vsie_gmap_notifier resulting in a crash. This is due to the\nfact that we add gmap-\u003eprivate == kvm after creation:\n\nstatic int acquire_gmap_shadow(struct kvm_vcpu *vcpu,\n struct vsie_page *vsie_page)\n{\n[...]\n gmap = gmap_shadow(vcpu-\u003earch.gmap, asce, edat);\n if (IS_ERR(gmap))\n return PTR_ERR(gmap);\n gmap-\u003eprivate = vcpu-\u003ekvm;\n\nLet children inherit the private field of the parent."
}
],
"id": "CVE-2023-52639",
"lastModified": "2024-04-03T17:24:18.150",
"metrics": {},
"published": "2024-04-03T15:15:51.467",
"references": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/28bb27824f25f36e5f80229a358d66ee09244082"
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"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/fe752331d4b361d43cfd0b89534b4b2176057c32"
}
],
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"vulnStatus": "Awaiting Analysis"
}
}
}
}
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- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
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