UNKNOWN NVD
CVE-2026-99160
In the Linux kernel, the following vulnerability has been resolved: ring-buffer: Do not show buffer_meta for CPUs without a buffer The per_cpu/cpuN/buffer_met
In the Linux kernel, the following vulnerability has been resolved:
ring-buffer: Do not show buffer_meta for CPUs without a buffer
The per_cpu/cpuN/buffer_meta files are created for every possible CPU,
but buffer->buffers[cpu] is only allocated once that CPU comes online.
Reading the file of a CPU that never came online dereferences a NULL
cpu_buffer in rbm_start().
Fail the open with -ENODEV when the CPU has no buffer, as the other
per CPU ring buffer interfaces do.
References
- https://git.kernel.org/stable/c/3f23cae09a4677a3f7c163a68388512cb231ff22
- https://git.kernel.org/stable/c/8512d0312cc0ea83ca4511b164c29a138bbb0c21
- https://git.kernel.org/stable/c/ae670c1a24fb5ffb167f26358cf47a5f0abbd670
This unknown severity vulnerability was published on 2026-10-28 via NVD.
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