Riskcovery

CVE-2026-89959

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

State
Published
Severity
8.8 High
Published
Sep 16, 2026
Updated
Oct 19, 2026
Reserved
Sep 11, 2026

Read the record on cve.org

Description

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.

Scores

CVSSScoreVectorSource
3.18.8 HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:HLinux

Weaknesses

The record names no weakness.

Affected Products

ProductVersions
LinuxLinux
  • eeb386aeb5b7c8d2dae6a3ba49255d8a97803182 to before 12871a4269f139221c9fde9ea3eb69c9228f59d4Affected
  • eeb386aeb5b7c8d2dae6a3ba49255d8a97803182 to before 02e72909453dee2f8a09f78819f9a9cb902dfbdcAffected
  • eeb386aeb5b7c8d2dae6a3ba49255d8a97803182 to before 4bffadde7fc49b00493fb78c6376f958998d4b8cAffected
  • eeb386aeb5b7c8d2dae6a3ba49255d8a97803182 to before f7d66afc34bc6e833c8ebe56973afec35f473bc1Affected
  • eeb386aeb5b7c8d2dae6a3ba49255d8a97803182 to before 2ff68bf414de167bc138e6e211ee1ad3ab3c5052Affected
  • eeb386aeb5b7c8d2dae6a3ba49255d8a97803182 to before 6b8a02e216f6b520cc029e43ddc83956605135d5Affected
LinuxLinux
  • 6.0Affected
  • before 6.0Not affected
  • 6.1.188 through 6.1.*Not affected
  • 6.6.157 through 6.6.*Not affected
  • 6.12.110 through 6.12.*Not affected
  • 6.18.51 through 6.18.*Not affected
  • 7.2.5 through 7.2.*Not affected
  • 7.3 and laterNot affected

References

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