CVE-2026-89959

Summary

In the Linux kernel, the following vulnerability has been resolved:

s390/vfio-ap: Fix control domain removal in vfio_ap_mdev_cfg_remove

The vfio_ap_config_remove function uses the bitmap_andnot function to clear bits from the matrix_mdev->matrix.adm bitmap (specifies the control domains assigned to the mdev). This prevents the explicitly unplugged control domains from being removed the KVM guest. The bitmap_and function is used instead.

Affected Software

VendorProductVersion RangeStatus
LinuxLinuxeeb386aeb5b7c8d2dae6a3ba49255d8a97803182 < 12871a4269f139221c9fde9ea3eb69c9228f59d4affected
LinuxLinuxeeb386aeb5b7c8d2dae6a3ba49255d8a97803182 < 02e72909453dee2f8a09f78819f9a9cb902dfbdcaffected
LinuxLinuxeeb386aeb5b7c8d2dae6a3ba49255d8a97803182 < 4bffadde7fc49b00493fb78c6376f958998d4b8caffected
LinuxLinuxeeb386aeb5b7c8d2dae6a3ba49255d8a97803182 < f7d66afc34bc6e833c8ebe56973afec35f473bc1affected
LinuxLinuxeeb386aeb5b7c8d2dae6a3ba49255d8a97803182 < 2ff68bf414de167bc138e6e211ee1ad3ab3c5052affected
LinuxLinuxeeb386aeb5b7c8d2dae6a3ba49255d8a97803182 < 6b8a02e216f6b520cc029e43ddc83956605135d5affected
LinuxLinux6.0affected
LinuxLinux0 < 6.0unaffected
LinuxLinux6.1.188 <= 6.1.*unaffected
LinuxLinux6.6.157 <= 6.6.*unaffected
LinuxLinux6.12.110 <= 6.12.*unaffected
LinuxLinux6.18.51 <= 6.18.*unaffected
LinuxLinux7.2.5 <= 7.2.*unaffected
LinuxLinux7.3-rc1 <= *unaffected

Weaknesses

References