Fiche vulnérabilité
CVE-2026-52968 : faille élevée linux linux kernel (CVSS 7.1)
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.
En bref
- Sévérité
- Élevée (CVSS 7.1)
- Vecteur CVSS
- CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
- Exploitation active
- Non signalée par la CISA
- Publication
- 24 juin 2026
- Dernière mise à jour
- 18 juil. 2026
Produits concernés
- linux linux kernel
Références
- Fiche CVE-2026-52968 sur le NVD (NIST)
- git.kernel.org/stable/c/11b8ff5b930b351dd1f6f088dce0beb027ac9…
- git.kernel.org/stable/c/16d990a15491cf76cd6eef0846e1b4100e632…
- git.kernel.org/stable/c/31a9d9f9942885aae356a1a57c79e82c5b5b0…
- git.kernel.org/stable/c/a99a25db131ece5e6c0f7632da606de631efe…
- git.kernel.org/stable/c/b22a2da8792a7bfe743c1a922e77fa499dded…
- git.kernel.org/stable/c/e7216651b94e92e5433fb2f54b77864642b4e…