{"id":"CVE-2026-89501","summary":"ring-buffer: Hold cpu_buffer::lock when resizing a subbuf","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nring-buffer: Hold cpu_buffer::lock when resizing a subbuf\n\nBecause, ring_buffer_subbuf_order_set() can clear cpu_buffer-\u003efree_page,\nhold cpu_buffer-\u003elock to prevent races with\nring_buffer_alloc_read_page() and ring_buffer_free_read_page().","modified":"2026-09-15T03:30:33.910418150Z","published":"2026-09-11T19:43:50.063Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89501.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/24974bd0da1b47fd56c975533ead50abf754e74d"},{"type":"WEB","url":"https://git.kernel.org/stable/c/6fcb0b745a0b80df62eae4a93ce52a2d061f4ac2"},{"type":"WEB","url":"https://git.kernel.org/stable/c/8a496aaa3da6e8d545896c2370c7e617cc931ae2"},{"type":"WEB","url":"https://git.kernel.org/stable/c/bf242baf58de03467f226c8e29554c9495dca7fc"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89501.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-89501"},{"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":"8e7b58c27b3c567316a51079b375b846f9223bba"},{"fixed":"8a496aaa3da6e8d545896c2370c7e617cc931ae2"},{"fixed":"6fcb0b745a0b80df62eae4a93ce52a2d061f4ac2"},{"fixed":"bf242baf58de03467f226c8e29554c9495dca7fc"},{"fixed":"24974bd0da1b47fd56c975533ead50abf754e74d"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-89501.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"6.8.0"},{"fixed":"6.12.109"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.50"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.2.4"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-89501.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"}]}