CVE-2026-74602
N/A
N/A
Summary
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).
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | f9b94daa542a8d2532f0930f01cd9aec2d19621b < 7c620d89bae1a926ab7d626600285d3516c9f3c4 | affected |
| Linux | Linux | f9b94daa542a8d2532f0930f01cd9aec2d19621b < 2e37f2bf111429fbfa4d985b12df3ba496ca70aa | affected |
| Linux | Linux | f9b94daa542a8d2532f0930f01cd9aec2d19621b < 3b3e0a6ee5bb3ac000f135beef26b2b7ed1a771a | affected |
| Linux | Linux | f9b94daa542a8d2532f0930f01cd9aec2d19621b < 6d014e44b68ddd43f71288d2a4dbb1a259869149 | affected |
| Linux | Linux | 6.8 | affected |
| Linux | Linux | 0 < 6.8 | unaffected |
| Linux | Linux | 6.12.105 <= 6.12.* | unaffected |
| Linux | Linux | 6.18.45 <= 6.18.* | unaffected |
| Linux | Linux | 7.1.9 <= 7.1.* | unaffected |
| Linux | Linux | 7.2 <= * | unaffected |
Weaknesses
References
- https://git.kernel.org/stable/c/7c620d89bae1a926ab7d626600285d3516c9f3c4
- https://git.kernel.org/stable/c/2e37f2bf111429fbfa4d985b12df3ba496ca70aa
- https://git.kernel.org/stable/c/3b3e0a6ee5bb3ac000f135beef26b2b7ed1a771a
- https://git.kernel.org/stable/c/6d014e44b68ddd43f71288d2a4dbb1a259869149
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