Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: ring-buffer: Initialise reader page order in rb_allocate_cpu_buffer() In rb_allocate_cpu_buffer(), bpage->order was omitted, leaving it as 0. This is an issue for a ring-buffer with subbufs bigger than PAGE_SIZE if when freed: free_buffer_page() relies on this value. Align the value with the actual allocation size (buffer::subbuf_order).
References
- https://git.kernel.org/stable/c/2e37f2bf111429fbfa4d985b12df3ba496ca70aa
- https://git.kernel.org/stable/c/3b3e0a6ee5bb3ac000f135beef26b2b7ed1a771a
- https://git.kernel.org/stable/c/6d014e44b68ddd43f71288d2a4dbb1a259869149
FAQ
What is CVE-2026-74602?
CVE-2026-74602 is a documented vulnerability. In the Linux kernel, the following vulnerability has been resolved: ring-buffer: Initialise reader page order in rb_allocate_cpu_buffer() In rb_allocate_cpu_buffer(), bpage->order was omitted, leavi...
How severe is CVE-2026-74602?
CVSS scoring is not yet available for CVE-2026-74602. Check NVD for updates.
Is there a patch for CVE-2026-74602?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.