CVE-2026-89959

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.

CVSS 3.1

8.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

EPSS

0.2% chance of exploitation in the next 30 days; higher than 6% of CVEs (scores of 2026-10-25)

Published

2026-09-16

Modified

2026-10-19

Record from

the NVD, synced 2026-10-19

References

• https://git.kernel.org/stable/c/02e72909453dee2f8a09f78819f9a9cb902dfbdc
• https://git.kernel.org/stable/c/12871a4269f139221c9fde9ea3eb69c9228f59d4
• https://git.kernel.org/stable/c/2ff68bf414de167bc138e6e211ee1ad3ab3c5052
• https://git.kernel.org/stable/c/4bffadde7fc49b00493fb78c6376f958998d4b8c
• https://git.kernel.org/stable/c/6b8a02e216f6b520cc029e43ddc83956605135d5

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