CVE-2026-99160None▾ SunlitIn 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 …
▾ Sunlit zone — Low / medium · no exploitation signal
impact 2.8 · likelihood 0 · exploitation 0
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Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CVEORG
0.2%
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.
Linux >= 950032ffcee7a43c960951940059afc5a2bdbcbc < 8512d0312cc0ea83ca4511b164c29a138bbb0c21Linux >= 950032ffcee7a43c960951940059afc5a2bdbcbc < ae670c1a24fb5ffb167f26358cf47a5f0abbd670Linux >= 950032ffcee7a43c960951940059afc5a2bdbcbc < 3f23cae09a4677a3f7c163a68388512cb231ff22Linux 6.12Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Connected by shared product, vendor, weakness, or advisory.
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