CVE-2026-74602
Unknown
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).
SeverityUnknown
CVSS—
Exploit probability—
Product
Linux
PublishedAug 22, 2026
First seenAug 22, 2026
How to fix
Update
- Linux Linux7c620d89bae1a926ab7d626600285d3516c9f3c4, 2e37f2bf111429fbfa4d985b12df3ba496ca70aa, 3b3e0a6ee5bb3ac000f135beef26b2b7ed1a771a, 6d014e44b68ddd43f71288d2a4dbb1a259869149 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Linux Linux | f9b94daa542a8d2532f0930f01cd9aec2d19621b ≤ v < 7c620d89bae1a926ab7d626600285d3516c9f3c4, f9b94daa542a8d2532f0930f01cd9aec2d19621b ≤ v < 2e37f2bf111429fbfa4d985b12df3ba496ca70aa, f9b94daa542a8d2532f0930f01cd9aec2d19621b ≤ v < 3b3e0a6ee5bb3ac000f135beef26b2b7ed1a771a, f9b94daa542a8d2532f0930f01cd9aec2d19621b ≤ v < 6d014e44b68ddd43f71288d2a4dbb1a259869149, 6.8 | 7c620d89bae1a926ab7d626600285d3516c9f3c4, 2e37f2bf111429fbfa4d985b12df3ba496ca70aa, 3b3e0a6ee5bb3ac000f135beef26b2b7ed1a771a, 6d014e44b68ddd43f71288d2a4dbb1a259869149 |
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