CVE-2026-99160 (GCVE-0-2026-99160)

Vulnerability from cvelistv5 – Published: 2026-10-28 10:35 – Updated: 2026-10-28 10:35
VLAI
Title
ring-buffer: Do not show buffer_meta for CPUs without a buffer
Summary
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.
Severity
No CVSS data available.
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 7033 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 950032ffcee7a43c960951940059afc5a2bdbcbc , < 8512d0312cc0ea83ca4511b164c29a138bbb0c21 (git)
Affected: 950032ffcee7a43c960951940059afc5a2bdbcbc , < ae670c1a24fb5ffb167f26358cf47a5f0abbd670 (git)
Affected: 950032ffcee7a43c960951940059afc5a2bdbcbc , < 3f23cae09a4677a3f7c163a68388512cb231ff22 (git)
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Linux Linux Affected: 6.12
Unaffected: 0 , < 6.12 (semver)
Unaffected: 6.18.59 , ≤ 6.18.* (semver)
Unaffected: 7.2.13 , ≤ 7.2.* (semver)
Unaffected: 7.3 , ≤ * (original_commit_for_fix)
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}



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