A race condition exists in the Linux kernel ring buffer subsystem where ring_buffer_alloc_read_page() may allocate a reader page using an outdated subbuf_order value. This can cause bpage->order the actual allocated memory, resulting in inconsistencies within the ring buffer and potentially corrupting kernel memory or delivering incorrect data to consumers.

All Linux kernel builds before the commit that changes the allocation logic are affected. The fix the patch in future stable releases. Systems running older kernels without this patch remain vulnerable.

The CVSS score of 5.5 signals a moderate severity. The EPSS score is < 1%, indicating a very low probability of exploitation. No active exploits are reported and the vulnerability is not listed in the CISA KE a race condition during kernel execution; no privileged or user‑space attack path is described in the advisory.