CVE-2026-98877 (GCVE-0-2026-98877)
Vulnerability from cvelistv5
Published
2026-10-23 11:37
Modified
2026-10-26 06:55
Severity ?
VLAI Severity ?
EPSS score ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
irqchip/gic-v4: Don't advertise VLPIs if no ITS is probed
When accidentally setting “kvm-arm.vgic_v4_enable=1” on a system that has
no MSI controller device tree node and GICv4, it results a panic as
“gic_domain” is NULL and the kernel attempts to access it.
Unable to handle kernel NULL pointer dereference at virtual address 0000000000000028
Mem abort info:
ESR = 0x0000000096000006
CPU: 1 UID: 0 PID: 295 Comm: lkvm-static Not tainted 7.1.0-rc4-ge3f15ad3970e #5 PREEMPT
Hardware name: linux,dummy-virt (DT)
pstate: 81402005 (Nzcv daif +PAN -UAO -TCO +DIT -SSBS BTYPE=--)
pc : __irq_domain_instantiate+0x1d4/0x578
lr : __irq_domain_instantiate+0x1cc/0x578
Set vLPI support to false at init time if the host has no ITS, so it
propagates properly to kvm_vgic_global_state.has_gicv4.
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Linux | Linux |
Version: a75460547e13c99762c2f9dbfcdd13ad416f91c5 Version: a75460547e13c99762c2f9dbfcdd13ad416f91c5 Version: a75460547e13c99762c2f9dbfcdd13ad416f91c5 Version: a75460547e13c99762c2f9dbfcdd13ad416f91c5 Version: a75460547e13c99762c2f9dbfcdd13ad416f91c5 Version: a75460547e13c99762c2f9dbfcdd13ad416f91c5 Version: a75460547e13c99762c2f9dbfcdd13ad416f91c5 |
||
{
"containers": {
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"programFiles": [
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{
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{
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{
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{
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}
],
"cpeApplicability": [
{
"nodes": [
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],
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],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nirqchip/gic-v4: Don\u0027t advertise VLPIs if no ITS is probed\n\nWhen accidentally setting \u201ckvm-arm.vgic_v4_enable=1\u201d on a system that has\nno MSI controller device tree node and GICv4, it results a panic as\n\u201cgic_domain\u201d is NULL and the kernel attempts to access it.\n\n Unable to handle kernel NULL pointer dereference at virtual address 0000000000000028\n Mem abort info:\n ESR = 0x0000000096000006\n\n CPU: 1 UID: 0 PID: 295 Comm: lkvm-static Not tainted 7.1.0-rc4-ge3f15ad3970e #5 PREEMPT\n Hardware name: linux,dummy-virt (DT)\n pstate: 81402005 (Nzcv daif +PAN -UAO -TCO +DIT -SSBS BTYPE=--)\n pc : __irq_domain_instantiate+0x1d4/0x578\n lr : __irq_domain_instantiate+0x1cc/0x578\n\nSet vLPI support to false at init time if the host has no ITS, so it\npropagates properly to kvm_vgic_global_state.has_gicv4."
}
],
"providerMetadata": {
"dateUpdated": "2026-10-26T06:55:59.697Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/3e4cae9f1472ba3c9fe87edee24074618b51f537"
},
{
"url": "https://git.kernel.org/stable/c/a2508b8855acc96abe69be73b41b672f1ef12516"
},
{
"url": "https://git.kernel.org/stable/c/e79934064be85fc9a3a6434da857307d8b78e33d"
},
{
"url": "https://git.kernel.org/stable/c/4761493dd663443f7353c184e6fa16e1cb3ac5a1"
},
{
"url": "https://git.kernel.org/stable/c/ab233119a19716b8f33e73ea7e092e0eb353cfbf"
},
{
"url": "https://git.kernel.org/stable/c/c8a911b3b07baa0aeb3dbc4e16a4670bd21bed40"
},
{
"url": "https://git.kernel.org/stable/c/e61654fbc3bc5d07ec9fafe29f33e19b2b5d0fd5"
}
],
"title": "irqchip/gic-v4: Don\u0027t advertise VLPIs if no ITS is probed",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2026-98877",
"datePublished": "2026-10-23T11:37:23.678Z",
"dateReserved": "2026-09-25T10:25:14.377Z",
"dateUpdated": "2026-10-26T06:55:59.697Z",
"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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