{"id":"CVE-2026-89959","summary":"s390/vfio-ap: Fix control domain removal in vfio_ap_mdev_cfg_remove","details":"In the Linux kernel, the following vulnerability has been resolved:\n\ns390/vfio-ap: Fix control domain removal in vfio_ap_mdev_cfg_remove\n\nThe vfio_ap_config_remove function uses the bitmap_andnot function to clear\nbits from the matrix_mdev-\u003ematrix.adm bitmap (specifies the control domains\nassigned to the mdev). This prevents the explicitly unplugged control\ndomains from being removed the KVM guest. The bitmap_and function is used\ninstead.","modified":"2026-09-17T03:47:20.386353665Z","published":"2026-09-16T10:32:41.908Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89959.json","cna_assigner":"Linux"},"references":[{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"},{"type":"WEB","url":"https://git.kernel.org/stable/c/02e72909453dee2f8a09f78819f9a9cb902dfbdc"},{"type":"WEB","url":"https://git.kernel.org/stable/c/12871a4269f139221c9fde9ea3eb69c9228f59d4"},{"type":"WEB","url":"https://git.kernel.org/stable/c/2ff68bf414de167bc138e6e211ee1ad3ab3c5052"},{"type":"WEB","url":"https://git.kernel.org/stable/c/4bffadde7fc49b00493fb78c6376f958998d4b8c"},{"type":"WEB","url":"https://git.kernel.org/stable/c/6b8a02e216f6b520cc029e43ddc83956605135d5"},{"type":"WEB","url":"https://git.kernel.org/stable/c/f7d66afc34bc6e833c8ebe56973afec35f473bc1"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89959.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-89959"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"eeb386aeb5b7c8d2dae6a3ba49255d8a97803182"},{"fixed":"12871a4269f139221c9fde9ea3eb69c9228f59d4"},{"fixed":"02e72909453dee2f8a09f78819f9a9cb902dfbdc"},{"fixed":"4bffadde7fc49b00493fb78c6376f958998d4b8c"},{"fixed":"f7d66afc34bc6e833c8ebe56973afec35f473bc1"},{"fixed":"2ff68bf414de167bc138e6e211ee1ad3ab3c5052"},{"fixed":"6b8a02e216f6b520cc029e43ddc83956605135d5"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-89959.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"6.0.0"},{"fixed":"6.1.188"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"fixed":"6.6.157"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.110"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.51"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.2.5"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-89959.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H"}]}