KVM: arm64: vgic: Handle race between interrupt affinity change and LPI disabling
In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: vgic: Handle race between interrupt affinity change and LPI disabling Hyunwoo Kim reports some really bad races should the following situation occur: - LPI-I is pending in vcpu-B's AP list - vcpu-A writes to vcpu-B's RD to disable its LPIs - vcpu-C moves I from B to C If the last two race nicely enough, vgic_prune_ap_list() can drop the irq and AP list locks, reacquire them, and in the interval the irq has been freed. UAF follows. The fix is two-fold: - Before dropping the irq and ap_list locks, take a reference on the irq - Do not try to handle migration of the pending bit: there is no expectation that this state is retained, as per the architecture With that, we're sure that the interrupt is still around, and we safely remove it from the AP list as it has no target at this stage (unless another interrupt fires, but that's another story).
CVE-2026-72288
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-72288
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "5dd4b924e390af426e424d5e52c1b4d1566af817",
"lessThan": "eb74f3feb68e64cf69f86cb806a15d8cfb6757f4",
"versionType": "git"
},
{
"status": "affected",
"version": "5dd4b924e390af426e424d5e52c1b4d1566af817",
"lessThan": "77c61235d66246dd6a5f55587f0afc273d832775",
"versionType": "git"
},
{
"status": "affected",
"version": "5dd4b924e390af426e424d5e52c1b4d1566af817",
"lessThan": "d19dca8194ebed371e624331c6be2cb73b562caf",
"versionType": "git"
},
{
"status": "affected",
"version": "5dd4b924e390af426e424d5e52c1b4d1566af817",
"lessThan": "b1a89d12d35a8256d2b170ced0b1c86851f3def2",
"versionType": "git"
},
{
"status": "affected",
"version": "5dd4b924e390af426e424d5e52c1b4d1566af817",
"lessThan": "7258770e5814f15e8308ebda82ac9acf6964ba8e",
"versionType": "git"
}
],
"programFiles": [
"arch/arm64/kvm/vgic/vgic.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "4.8"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "4.8",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.6.160",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.114",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.40",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.1.5",
"versionType": "semver",
"lessThanOrEqual": "7.1.*"
},
{
"status": "unaffected",
"version": "7.2",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"arch/arm64/kvm/vgic/vgic.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-72288
Source reference:
/cveMetadata/cveId
Publisher severity
critical
Source reference: /containers/cna/metrics
- Event
- #46498 · Revision 1
- Added to Heist Feed
- Publisher date