CVE-2026-89501
High
Description
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().
SeverityHigh
CVSS7.8
Exploit probability—
Product
Linux
PublishedSep 11, 2026
First seenSep 11, 2026
How to fix
Update
- Linux Linux8a496aaa3da6e8d545896c2370c7e617cc931ae2, 6fcb0b745a0b80df62eae4a93ce52a2d061f4ac2, bf242baf58de03467f226c8e29554c9495dca7fc, 24974bd0da1b47fd56c975533ead50abf754e74d or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Linux Linux | 8e7b58c27b3c567316a51079b375b846f9223bba ≤ v < 8a496aaa3da6e8d545896c2370c7e617cc931ae2, 8e7b58c27b3c567316a51079b375b846f9223bba ≤ v < 6fcb0b745a0b80df62eae4a93ce52a2d061f4ac2, 8e7b58c27b3c567316a51079b375b846f9223bba ≤ v < bf242baf58de03467f226c8e29554c9495dca7fc, 8e7b58c27b3c567316a51079b375b846f9223bba ≤ v < 24974bd0da1b47fd56c975533ead50abf754e74d, 6.8 | 8a496aaa3da6e8d545896c2370c7e617cc931ae2, 6fcb0b745a0b80df62eae4a93ce52a2d061f4ac2, bf242baf58de03467f226c8e29554c9495dca7fc, 24974bd0da1b47fd56c975533ead50abf754e74d |
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