{"id":"CVE-2026-80921","summary":"KVM: s390: vsie: zero stale crypto bits","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nKVM: s390: vsie: zero stale crypto bits\n\nWhen shadowing crypto access bits from a format0 apcb (crycb 0 or 1),\nthe bits 64..255 are unchanged from whatever is in the vsie page in the\ncrycb and thus in the apcb. This gives a nested guest potential access\nto a device no longer available. Zero out the remaining bits.","modified":"2026-09-11T03:49:00.245573950Z","published":"2026-09-09T16:19:42.335Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/80xxx/CVE-2026-80921.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/087c19cc60a8caa1a08e1e434c8be2caf6c27733"},{"type":"WEB","url":"https://git.kernel.org/stable/c/29b4f7bc2991313bd3e6f6fb8fdf1b173f086dd6"},{"type":"WEB","url":"https://git.kernel.org/stable/c/34d5b5b646c91cfb9338d7a12c955a70ffb8c66b"},{"type":"WEB","url":"https://git.kernel.org/stable/c/59d51550b5cb916bda037673a721a404b3b47a0d"},{"type":"WEB","url":"https://git.kernel.org/stable/c/7d23489f51109e3ebba5b5db8c5f0185af7b7fdf"},{"type":"WEB","url":"https://git.kernel.org/stable/c/935eeba276012916c76243e5cbb843efd8fdb75d"},{"type":"WEB","url":"https://git.kernel.org/stable/c/d110b3297f11ef227098b8a82ade2d5f123b7d2f"},{"type":"WEB","url":"https://git.kernel.org/stable/c/d4bcd2df6d0d2af916b4fe1a533958778ea7c45b"},{"type":"WEB","url":"https://git.kernel.org/stable/c/f6079dca67eccb5eabef9f72437948c66dc5131f"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/80xxx/CVE-2026-80921.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-80921"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"6b79de4b056e5a2febc0c61233d8f0ad7868e49c"},{"fixed":"d110b3297f11ef227098b8a82ade2d5f123b7d2f"},{"fixed":"59d51550b5cb916bda037673a721a404b3b47a0d"},{"fixed":"f6079dca67eccb5eabef9f72437948c66dc5131f"},{"fixed":"087c19cc60a8caa1a08e1e434c8be2caf6c27733"},{"fixed":"7d23489f51109e3ebba5b5db8c5f0185af7b7fdf"},{"fixed":"935eeba276012916c76243e5cbb843efd8fdb75d"},{"fixed":"d4bcd2df6d0d2af916b4fe1a533958778ea7c45b"},{"fixed":"29b4f7bc2991313bd3e6f6fb8fdf1b173f086dd6"},{"fixed":"34d5b5b646c91cfb9338d7a12c955a70ffb8c66b"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-80921.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"4.20.0"},{"fixed":"5.10.269"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.11.0"},{"fixed":"5.15.220"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.16.0"},{"fixed":"6.1.187"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"fixed":"6.6.156"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.108"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.49"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.1.13"}]},{"type":"ECOSYSTEM","events":[{"introduced":"7.2.0"},{"fixed":"7.2.3"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-80921.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"}]}