CVE-2026-89957

CVE-2026-89957 affects the Linux kernel s390 vfio-ap driver. In vfio_ap_mdev_hot_unplug_cfg(), the return value of bitmap_andnot() is used to decide whether the guest APCB needs updating. When the last AP adapter or domain assigned to an mdev is removed, the resulting empty bitmap causes bitmap_a...

EUVD-2026-80557

In the Linux kernel, the following vulnerability has been resolved: s390/vfio-ap: Fix hot-unplug skipped when last AP adapter or domain removed The vfioapmdevhotunplugcfg function uses the return value of bitmapandnot to determine whether the guest APCB needs to be updated. However, bitmapandnot...