{"id":"CVE-2026-99160","published":"2026-10-28T11:17:36.277","lastModified":"2026-10-28T11:17:36.277","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nring-buffer: Do not show buffer_meta for CPUs without a buffer\n\nThe per_cpu/cpuN/buffer_meta files are created for every possible CPU,\nbut buffer->buffers[cpu] is only allocated once that CPU comes online.\nReading the file of a CPU that never came online dereferences a NULL\ncpu_buffer in rbm_start().\n\nFail the open with -ENODEV when the CPU has no buffer, as the other\nper CPU ring buffer interfaces do.","cvssScore":null,"cvssSeverity":null,"cvssVector":null,"cwes":[],"vendors":[],"products":[],"references":[{"url":"https://git.kernel.org/stable/c/3f23cae09a4677a3f7c163a68388512cb231ff22","tags":[]},{"url":"https://git.kernel.org/stable/c/8512d0312cc0ea83ca4511b164c29a138bbb0c21","tags":[]},{"url":"https://git.kernel.org/stable/c/ae670c1a24fb5ffb167f26358cf47a5f0abbd670","tags":[]}],"exploitRefs":[],"hasPoc":false,"ai":null}