High 8.8Published Sep 16, 2026

CVE-2026-89959s390/vfio-ap: Fix control domain removal in vfio_ap_mdev_cfg_remove

Updated under an hour ago (Oct 26, 2026, 5:20 PM ET)

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Exploited in the last 30 days

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: 8.8 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Received
Record last updated: Oct 19, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from eeb386aeb5b7c8d2dae6a3ba49255d8a97803182 before 12871a4269f139221c9fde9ea3eb69c9228f59d4; from eeb386aeb5b7c8d2dae6a3ba49255d8a97803182 before 02e72909453dee2f8a09f78819f9a9cb902dfbdc; from eeb386aeb5b7c8d2dae6a3ba49255d8a97803182 before 4bffadde7fc49b00493fb78c6376f958998d4b8c; from eeb386aeb5b7c8d2dae6a3ba49255d8a97803182 before f7d66afc34bc6e833c8ebe56973afec35f473bc1; from eeb386aeb5b7c8d2dae6a3ba49255d8a97803182 before 2ff68bf414de167bc138e6e211ee1ad3ab3c5052; from eeb386aeb5b7c8d2dae6a3ba49255d8a97803182 before 6b8a02e216f6b520cc029e43ddc83956605135d5	CNA record

References

References

https://git.kernel.org/stable/c/12871a4269f139221c9fde9ea3eb69c9228f59d4
https://git.kernel.org/stable/c/02e72909453dee2f8a09f78819f9a9cb902dfbdc
https://git.kernel.org/stable/c/4bffadde7fc49b00493fb78c6376f958998d4b8c
https://git.kernel.org/stable/c/f7d66afc34bc6e833c8ebe56973afec35f473bc1
https://git.kernel.org/stable/c/2ff68bf414de167bc138e6e211ee1ad3ab3c5052
https://git.kernel.org/stable/c/6b8a02e216f6b520cc029e43ddc83956605135d5

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.