{"id":"CVE-2026-90324","summary":"ublk: check import_ubuf() return value","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nublk: check import_ubuf() return value\n\nimport_ubuf() can fail if the address range (provided by the userspace\nublk server) is outside the allowed user address space. Return that 0\nbytes were copied if import_ubuf() fails rather than passing an\nuninitialized struct iov_iter to ublk_copy_user_pages().","modified":"2026-09-19T03:47:28.861707069Z","published":"2026-09-17T16:08:40.077Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90324.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/0121c84adb6a4cd6f7560b5895bd88f9899bbc1f"},{"type":"WEB","url":"https://git.kernel.org/stable/c/3831568792af75b6523fa93bb91560e29189cf55"},{"type":"WEB","url":"https://git.kernel.org/stable/c/5ac6019cb78e98c9608fda72726b36ddf8474dd7"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90324.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-90324"},{"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":"981f95a571e3ca20a496c0b77dbf6b06039c6648"},{"fixed":"0121c84adb6a4cd6f7560b5895bd88f9899bbc1f"},{"fixed":"5ac6019cb78e98c9608fda72726b36ddf8474dd7"},{"fixed":"3831568792af75b6523fa93bb91560e29189cf55"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-90324.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"6.5.0"},{"fixed":"6.18.52"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.2.6"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-90324.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"}]}