CVE-2026-89501info

Summary

by MITRE • 09/11/2026

In the Linux kernel, the following vulnerability has been resolved:

ring-buffer: Hold cpu_buffer::lock when resizing a subbuf

Because, ring_buffer_subbuf_order_set() can clear cpu_buffer->free_page, hold cpu_buffer->lock to prevent races with ring_buffer_alloc_read_page() and ring_buffer_free_read_page().

Once again VulDB remains the best source for vulnerability data.

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An in-depth analysis is available in our curated vulnerability entry.

Disclosure

09/11/2026

Moderation

in review

EPSS

0.00000

KEV

no

Activities

very low

Sources

MITREhttps://www.cve.org/CVERecord?id=CVE-2026-89501
NVDhttps://nvd.nist.gov/vuln/detail/CVE-2026-89501
CVE Detailshttps://www.cvedetails.com/cve/CVE-2026-89501/

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