CVE-2026-98712 (GCVE-0-2026-98712)
Vulnerability from cvelistv5
Published
2026-10-18 15:46
Modified
2026-10-19 09:24
Severity ?
VLAI Severity ?
EPSS score ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
KVM: arm64: vgic: Take a refcount on IRQs referenced by last_lr_irq
Referencing the last interrupt inserted in an LR is rather fragile, as
this interrupt can vanish if a concurrently unmapped LPI.
Solve this by bumping up the refcount on the interrupt when populating
last_lr_irq, and drop it at vgic_prune_ap_list() time, when LPIs are
being reclaimed.
References
Impacted products
{
"containers": {
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"arch/arm64/kvm/vgic/vgic.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
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"status": "affected",
"version": "6da5e537f5afe091658e846da1949d7e557d2ade",
"versionType": "git"
},
{
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"status": "affected",
"version": "6da5e537f5afe091658e846da1949d7e557d2ade",
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},
{
"status": "affected",
"version": "cd28ca4c27ed5929f61bbed8a967c20519facb88",
"versionType": "git"
},
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"status": "affected",
"version": "6.19.9",
"versionType": "semver"
}
]
},
{
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"product": "Linux",
"programFiles": [
"arch/arm64/kvm/vgic/vgic.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "7.0"
},
{
"lessThan": "7.0",
"status": "unaffected",
"version": "0",
"versionType": "semver"
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{
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"version": "7.2.10",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "7.3",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
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"versionEndExcluding": "7.2.10",
"versionStartIncluding": "7.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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},
{
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}
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],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nKVM: arm64: vgic: Take a refcount on IRQs referenced by last_lr_irq\n\nReferencing the last interrupt inserted in an LR is rather fragile, as\nthis interrupt can vanish if a concurrently unmapped LPI.\n\nSolve this by bumping up the refcount on the interrupt when populating\nlast_lr_irq, and drop it at vgic_prune_ap_list() time, when LPIs are\nbeing reclaimed."
}
],
"providerMetadata": {
"dateUpdated": "2026-10-19T09:24:23.386Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/8b25393d16a5ca8df907bd7ee1ff2e9d85678b3c"
},
{
"url": "https://git.kernel.org/stable/c/19bc5d79ece613f242b5ec03921a3b465321bfed"
}
],
"title": "KVM: arm64: vgic: Take a refcount on IRQs referenced by last_lr_irq",
"x_generator": {
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"cveMetadata": {
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"assignerShortName": "Linux",
"cveId": "CVE-2026-98712",
"datePublished": "2026-10-18T15:46:44.857Z",
"dateReserved": "2026-09-25T10:25:14.365Z",
"dateUpdated": "2026-10-19T09:24:23.386Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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