linux: In the Linux kernel, the following vulnerability has been resolved: ring-buffer: Do not show buffer_meta for CPUs wi...
CVE-2026-99160 is fixed in linux on 1 platform, first by DEBIAN-CVE-2026-99160, released November 3, 2026. It is not reported as exploited. Patch Radar priority: Routine.
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.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| linux · Debian 13.5 (trixie) | 6.12.115-2 | DEBIAN-CVE-2026-99160 | Nov 3, 2026 |
| linux · Debian 14 | 7.2.13-1 | DEBIAN-CVE-2026-99160 | Nov 3, 2026 |
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