KVM: s390: pci: fix GAIT table indexing due to double-scaling pointer arithmetic
In the Linux kernel, the following vulnerability has been resolved: KVM: s390: pci: fix GAIT table indexing due to double-scaling pointer arithmetic kvm_s390_pci_aif_enable(), kvm_s390_pci_aif_disable(), and aen_host_forward() index the GAIT by manually multiplying the index with sizeof(struct zpci_gaite). Since aift->gait is already a struct zpci_gaite pointer, this double-scales the offset, accessing element aisb*16 instead of aisb. This causes out-of-bounds accesses when aisb >= 32 (with ZPCI_NR_DEVICES=512) Fix by removing the erroneous sizeof multiplication.
CVE-2026-52968
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-2026-52968
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": "73f91b004321f2510fa79e66035dbbf1870fcf56",
"lessThan": "31a9d9f9942885aae356a1a57c79e82c5b5b0828",
"versionType": "git"
},
{
"status": "affected",
"version": "73f91b004321f2510fa79e66035dbbf1870fcf56",
"lessThan": "a99a25db131ece5e6c0f7632da606de631efe4f2",
"versionType": "git"
},
{
"status": "affected",
"version": "73f91b004321f2510fa79e66035dbbf1870fcf56",
"lessThan": "11b8ff5b930b351dd1f6f088dce0beb027ac92d0",
"versionType": "git"
},
{
"status": "affected",
"version": "73f91b004321f2510fa79e66035dbbf1870fcf56",
"lessThan": "b22a2da8792a7bfe743c1a922e77fa499ddedbe8",
"versionType": "git"
},
{
"status": "affected",
"version": "73f91b004321f2510fa79e66035dbbf1870fcf56",
"lessThan": "e7216651b94e92e5433fb2f54b77864642b4ea48",
"versionType": "git"
},
{
"status": "affected",
"version": "73f91b004321f2510fa79e66035dbbf1870fcf56",
"lessThan": "16d990a15491cf76cd6eef0846e1b4100e63261a",
"versionType": "git"
}
],
"programFiles": [
"arch/s390/kvm/interrupt.c",
"arch/s390/kvm/pci.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "6.0"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "6.0",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.1.175",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.141",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.91",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.33",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.0.10",
"versionType": "semver",
"lessThanOrEqual": "7.0.*"
},
{
"status": "unaffected",
"version": "7.1",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"arch/s390/kvm/interrupt.c",
"arch/s390/kvm/pci.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-52968
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #40718 · Revision 1
- Added to Heist Feed
- Publisher date