{"id":"CVE-2026-97617","published":"2026-09-25T11:17:15.893","lastModified":"2026-09-25T11:17:15.893","description":"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 -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.","cvssScore":null,"cvssSeverity":null,"cvssVector":null,"cwes":[],"vendors":[],"products":[],"references":[{"url":"https://git.kernel.org/stable/c/32bf47db9237c5b8b6f6aaa5356bb4c79d241f76","tags":[]},{"url":"https://git.kernel.org/stable/c/9fd4ea952e6ac12a63c3fe89f08ad02771aa2c06","tags":[]},{"url":"https://git.kernel.org/stable/c/d860c67c051685abb0460b593b193f0f45f4fa92","tags":[]},{"url":"https://git.kernel.org/stable/c/f2099644e1b2a2c0805c5240d63ab0522d9d0174","tags":[]}],"exploitRefs":[],"hasPoc":false,"ai":null}