Description
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.
Metrics
CVSS 3.1 7.1/10
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:HWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | >= 73f91b004321f2510fa79e66035dbbf1870fcf56, < 31a9d9f9942885aae356a1a57c79e82c5b5b0828; >= 73f91b004321f2510fa79e66035dbbf1870fcf56, < a99a25db131ece5e6c0f7632da606de631efe4f2; >= 73f91b004321f2510fa79e66035dbbf1870fcf56, < 11b8ff5b930b351dd1f6f088dce0beb027ac92d0; >= 73f91b004321f2510fa79e66035dbbf1870fcf56, < b22a2da8792a7bfe743c1a922e77fa499ddedbe8; >= 73f91b004321f2510fa79e66035dbbf1870fcf56, < e7216651b94e92e5433fb2f54b77864642b4ea48; >= 73f91b004321f2510fa79e66035dbbf1870fcf56, < 16d990a15491cf76cd6eef0846e1b4100e63261a |
| Linux | Linux | 6.0 |
References
- https://git.kernel.org/stable/c/11b8ff5b930b351dd1f6f088dce0beb027ac92d0Patch
- https://git.kernel.org/stable/c/16d990a15491cf76cd6eef0846e1b4100e63261aPatch
- https://git.kernel.org/stable/c/31a9d9f9942885aae356a1a57c79e82c5b5b0828Patch
- https://git.kernel.org/stable/c/a99a25db131ece5e6c0f7632da606de631efe4f2Patch
- https://git.kernel.org/stable/c/b22a2da8792a7bfe743c1a922e77fa499ddedbe8Patch
- https://git.kernel.org/stable/c/e7216651b94e92e5433fb2f54b77864642b4ea48Patch
Timeline
- Published
- Jun 24, 2026
- Last modified
- Oct 19, 2026
- NVD status
- Modified