{"id":"CVE-2026-89501","aliases":[],"url":"https://o3.security/vulnerability/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->free_page,\nhold cpu_buffer->lock to prevent races with\nring_buffer_alloc_read_page() and ring_buffer_free_read_page().","published":"2026-09-11T19:43:50.063Z","modified":"2026-09-14T03:46:06.088396480Z","cvss":{"score":7.8,"severity":"HIGH","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[{"ecosystem":"Linux","name":"Kernel","fixedVersion":"6.12.109"}],"fix":null,"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"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-09-14T03:46:06.088396480Z"}}