{"id":"CVE-2026-97617","title":"In the Linux kernel, the following vulnerability has been resolved:\n\nring-buffer: Check resize_disabled before publishing the new subbuf order\n\nring_buffer_subbuf_order_set() stores the new order and only then walks\nthe CPUs, returning -…","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nring-buffer: Check resize_disabled before publishing the new subbuf order\n\nring_buffer_subbuf_order_set() stores the new order and only then walks\nthe CPUs, returning -…","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= 117c39200d9d760cbd5944bb89efb7b9c51965aa < f2099644e1b2a2c0805c5240d63ab0522d9d0174","Linux >= 117c39200d9d760cbd5944bb89efb7b9c51965aa < 9fd4ea952e6ac12a63c3fe89f08ad02771aa2c06","Linux >= 117c39200d9d760cbd5944bb89efb7b9c51965aa < 32bf47db9237c5b8b6f6aaa5356bb4c79d241f76","Linux >= 117c39200d9d760cbd5944bb89efb7b9c51965aa < d860c67c051685abb0460b593b193f0f45f4fa92","Linux 6.10"],"published":"2026-09-25","updated":"2026-09-25","sourceUpdated":"2026-09-25T11:17:15.893","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-97617","references":[{"url":"https://git.kernel.org/stable/c/32bf47db9237c5b8b6f6aaa5356bb4c79d241f76","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/9fd4ea952e6ac12a63c3fe89f08ad02771aa2c06","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/d860c67c051685abb0460b593b193f0f45f4fa92","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/f2099644e1b2a2c0805c5240d63ab0522d9d0174","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"tags":["nvd","cve.org"],"ingestedAt":"2026-09-25T11:06:38.898Z","slug":"CVE-2026-97617","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nring-buffer: Check resize_disabled before publishing the new subbuf order\n\nring_buffer_subbuf_order_set() stores the new order and only then walks\nthe CPUs, returning -EBUSY if any of them has resizing disabled. A user\nmapped buffer has resizing disabled, and __rb_map_vma() reads\nbuffer->subbuf_order without buffer->mutex, so an mmap of an already\nmapped CPU racing the failing order change sizes the mapping with the\nnew order and inserts pages past the sub-buffer into the VMA.\n\nCheck the CPUs before storing the new order.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}