{"schema_version":"1.7.5","id":"CVE-2026-46243","published":"2026-06-01T16:22:29.211Z","modified":"2026-07-25T03:56:14.020770652Z","related":["ALSA-2026:23258","ALSA-2026:23259","ALSA-2026:23329","ALSA-2026:24381","SUSE-SU-2026:22043-1","SUSE-SU-2026:22048-1","SUSE-SU-2026:22076-1","SUSE-SU-2026:22087-1","SUSE-SU-2026:22598-1","SUSE-SU-2026:22672-1","SUSE-SU-2026:22673-1","SUSE-SU-2026:22674-1","SUSE-SU-2026:22675-1","SUSE-SU-2026:22676-1","SUSE-SU-2026:22677-1","SUSE-SU-2026:22678-1","SUSE-SU-2026:22679-1","SUSE-SU-2026:22680-1","SUSE-SU-2026:22681-1","SUSE-SU-2026:22682-1","SUSE-SU-2026:22683-1","SUSE-SU-2026:22684-1","SUSE-SU-2026:22685-1","SUSE-SU-2026:22686-1","SUSE-SU-2026:22687-1","SUSE-SU-2026:22689-1","SUSE-SU-2026:22690-1","SUSE-SU-2026:22691-1","SUSE-SU-2026:22692-1","SUSE-SU-2026:22693-1","SUSE-SU-2026:22694-1","SUSE-SU-2026:22695-1","SUSE-SU-2026:22696-1","SUSE-SU-2026:22697-1","SUSE-SU-2026:22698-1","SUSE-SU-2026:22710-1","SUSE-SU-2026:22711-1","SUSE-SU-2026:22712-1","SUSE-SU-2026:22713-1","SUSE-SU-2026:22714-1","SUSE-SU-2026:22715-1","SUSE-SU-2026:22716-1","SUSE-SU-2026:22717-1","SUSE-SU-2026:22718-1","SUSE-SU-2026:22719-1","SUSE-SU-2026:22720-1","SUSE-SU-2026:22721-1","SUSE-SU-2026:22722-1","SUSE-SU-2026:22723-1","SUSE-SU-2026:22724-1","SUSE-SU-2026:22725-1","SUSE-SU-2026:22726-1","SUSE-SU-2026:22727-1","SUSE-SU-2026:22728-1","SUSE-SU-2026:22729-1","SUSE-SU-2026:22730-1","SUSE-SU-2026:22731-1","SUSE-SU-2026:22732-1","SUSE-SU-2026:22733-1","SUSE-SU-2026:22734-1","SUSE-SU-2026:22735-1","SUSE-SU-2026:22743-1","SUSE-SU-2026:22744-1","SUSE-SU-2026:22746-1","SUSE-SU-2026:22747-1","SUSE-SU-2026:22748-1","SUSE-SU-2026:22749-1","SUSE-SU-2026:22751-1","SUSE-SU-2026:22755-1","SUSE-SU-2026:22758-1","SUSE-SU-2026:22759-1","SUSE-SU-2026:22761-1","SUSE-SU-2026:22762-1","SUSE-SU-2026:22763-1","SUSE-SU-2026:22775-1","SUSE-SU-2026:22776-1","SUSE-SU-2026:22777-1","SUSE-SU-2026:22778-1","SUSE-SU-2026:22779-1","SUSE-SU-2026:22780-1","SUSE-SU-2026:22781-1","SUSE-SU-2026:22782-1","SUSE-SU-2026:22783-1","SUSE-SU-2026:22784-1","SUSE-SU-2026:22785-1","SUSE-SU-2026:22786-1","SUSE-SU-2026:2310-1","SUSE-SU-2026:2317-1","SUSE-SU-2026:2331-1","SUSE-SU-2026:2332-1","SUSE-SU-2026:2383-1","SUSE-SU-2026:2421-1","SUSE-SU-2026:2482-1","SUSE-SU-2026:2855-1","SUSE-SU-2026:2857-1","SUSE-SU-2026:2858-1","SUSE-SU-2026:2862-1","SUSE-SU-2026:2864-1","SUSE-SU-2026:2866-1","SUSE-SU-2026:2867-1","SUSE-SU-2026:2868-1","SUSE-SU-2026:2887-1","SUSE-SU-2026:2888-1","SUSE-SU-2026:2889-1","SUSE-SU-2026:2890-1","SUSE-SU-2026:2894-1","SUSE-SU-2026:2895-1","SUSE-SU-2026:2899-1","SUSE-SU-2026:2902-1","SUSE-SU-2026:2909-1","SUSE-SU-2026:2910-1","SUSE-SU-2026:2920-1","SUSE-SU-2026:2930-1","SUSE-SU-2026:2932-1","SUSE-SU-2026:2933-1","SUSE-SU-2026:2937-1","SUSE-SU-2026:2938-1","SUSE-SU-2026:2943-1","SUSE-SU-2026:2945-1","SUSE-SU-2026:2955-1","SUSE-SU-2026:2956-1","SUSE-SU-2026:2957-1","SUSE-SU-2026:2961-1","SUSE-SU-2026:2989-1","SUSE-SU-2026:2991-1","SUSE-SU-2026:2992-1","SUSE-SU-2026:2994-1","SUSE-SU-2026:2995-1","SUSE-SU-2026:2997-1","SUSE-SU-2026:3011-1","SUSE-SU-2026:3065-1","SUSE-SU-2026:3066-1","SUSE-SU-2026:3067-1","SUSE-SU-2026:3075-1","openSUSE-SU-2026:10954-1","openSUSE-SU-2026:20912-1"],"summary":"smb: client: reject userspace cifs.spnego descriptions","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nsmb: client: reject userspace cifs.spnego descriptions\n\ncifs.spnego key descriptions contain authority-bearing fields such as\npid, uid, creduid, and upcall_target that cifs.upcall treats as\nkernel-originating inputs. However, userspace can also create keys of\nthis type through request_key(2) or add_key(2), allowing those fields to\nbe supplied without CIFS origin.\n\nOnly accept cifs.spnego descriptions while CIFS is using its private\nspnego_cred to request the key.","affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"f1d662a7d5e5322e583aad6b3cfec03d8f27b435"},{"fixed":"7713bd320ed4fc3d08a227cd8e41242219a16981"},{"fixed":"9544559e59438a4b609b2fdfa0763d8360572824"},{"fixed":"cf20038657d6d4974349556a34e08fe0490bebbc"},{"fixed":"2035acfb17221729b1b8ac335e941868a04ca079"},{"fixed":"a3bbda6502a9398b816fa2e71c9a3f955f58013d"},{"fixed":"91f89c1d83e80417629791fcef6af8140d7d01c8"},{"fixed":"0aece6685fc80a8de492688ca2315fb86ec379c7"},{"fixed":"3da1fdf4efbc490041eb4f836bf596201203f8f2"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-46243.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"2.6.24"},{"fixed":"5.10.258"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.11.0"},{"fixed":"5.15.209"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.16.0"},{"fixed":"6.1.175"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"fixed":"6.6.142"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.92"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.34"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.0.11"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-46243.json"}}],"references":[{"type":"WEB","url":"http://www.openwall.com/lists/oss-security/2026/06/01/6"},{"type":"WEB","url":"https://git.kernel.org/stable/c/0aece6685fc80a8de492688ca2315fb86ec379c7"},{"type":"WEB","url":"https://git.kernel.org/stable/c/2035acfb17221729b1b8ac335e941868a04ca079"},{"type":"WEB","url":"https://git.kernel.org/stable/c/3da1fdf4efbc490041eb4f836bf596201203f8f2"},{"type":"WEB","url":"https://git.kernel.org/stable/c/7713bd320ed4fc3d08a227cd8e41242219a16981"},{"type":"WEB","url":"https://git.kernel.org/stable/c/91f89c1d83e80417629791fcef6af8140d7d01c8"},{"type":"WEB","url":"https://git.kernel.org/stable/c/9544559e59438a4b609b2fdfa0763d8360572824"},{"type":"WEB","url":"https://git.kernel.org/stable/c/a3bbda6502a9398b816fa2e71c9a3f955f58013d"},{"type":"WEB","url":"https://git.kernel.org/stable/c/cf20038657d6d4974349556a34e08fe0490bebbc"},{"type":"WEB","url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-46243.json"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:23258"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:23259"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:23329"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:23395"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:24381"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:25908"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:26462"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:26515"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:26535"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:26563"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:26570"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:27708"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:27719"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:27729"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:27735"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:28887"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:28962"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:33219"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:33220"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:33221"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:33222"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:33223"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:33224"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:33225"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:33486"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:34048"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:34757"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:34764"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:34788"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:34815"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:36620"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:40021"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:41236"},{"type":"ADVISORY","url":"https://access.redhat.com/security/cve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