Security Advisory

CVE-2026-74634

CVE vulnerability detail - eXtreme Datacenter Security Operations

Published 2026-08-22 15:32:14

Last updated 2026-08-22 15:32:14

Assigner Linux

CVSS score not scored

State PUBLISHED

Description

In the Linux kernel, the following vulnerability has been resolved: ring-buffer: Prevent subbuf order change when resizing is disabled Because ring_buffer_subbuf_order_set() frees buffer pages, we can't allow it when resizing is disabled. A non-consuming reader is at risk of use-after-free (rb_advance_iter()). Return -EBUSY on resize_disabled, matching ring_buffer_resize() behaviour.

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