CVE-2026-89501
7.8
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved:
ring-buffer: Hold cpu_buffer::lock when resizing a subbuf
Because, ring_buffer_subbuf_order_set() can clear cpu_buffer->free_page, hold cpu_buffer->lock to prevent races with ring_buffer_alloc_read_page() and ring_buffer_free_read_page().
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | 8e7b58c27b3c567316a51079b375b846f9223bba < 8a496aaa3da6e8d545896c2370c7e617cc931ae2 | affected |
| Linux | Linux | 8e7b58c27b3c567316a51079b375b846f9223bba < 6fcb0b745a0b80df62eae4a93ce52a2d061f4ac2 | affected |
| Linux | Linux | 8e7b58c27b3c567316a51079b375b846f9223bba < bf242baf58de03467f226c8e29554c9495dca7fc | affected |
| Linux | Linux | 8e7b58c27b3c567316a51079b375b846f9223bba < 24974bd0da1b47fd56c975533ead50abf754e74d | affected |
| Linux | Linux | 6.8 | affected |
| Linux | Linux | 0 < 6.8 | unaffected |
| Linux | Linux | 6.12.109 <= 6.12.* | unaffected |
| Linux | Linux | 6.18.50 <= 6.18.* | unaffected |
| Linux | Linux | 7.2.4 <= 7.2.* | unaffected |
| Linux | Linux | 7.3-rc1 <= * | unaffected |
Weaknesses
References
- https://git.kernel.org/stable/c/8a496aaa3da6e8d545896c2370c7e617cc931ae2
- https://git.kernel.org/stable/c/6fcb0b745a0b80df62eae4a93ce52a2d061f4ac2
- https://git.kernel.org/stable/c/bf242baf58de03467f226c8e29554c9495dca7fc
- https://git.kernel.org/stable/c/24974bd0da1b47fd56c975533ead50abf754e74d
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