CVE-2026-89501
ring-buffer: Hold cpu_buffer::lock when resizing a subbuf
CVSS Score
7.8
EPSS Score
0.0%
EPSS Percentile
0th
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().
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Sep 11, 2026 |
| Last Updated | Sep 13, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Affected Versions
Linux / Linux
8e7b58c27b3c567316a51079b375b846f9223bba < 8a496aaa3da6e8d545896c2370c7e617cc931ae2 8e7b58c27b3c567316a51079b375b846f9223bba < 6fcb0b745a0b80df62eae4a93ce52a2d061f4ac2 8e7b58c27b3c567316a51079b375b846f9223bba < bf242baf58de03467f226c8e29554c9495dca7fc 8e7b58c27b3c567316a51079b375b846f9223bba < 24974bd0da1b47fd56c975533ead50abf754e74d
Linux / Linux
6.8
References
git.kernel.org: https://git.kernel.org/stable/c/8a496aaa3da6e8d545896c2370c7e617cc931ae2 git.kernel.org: https://git.kernel.org/stable/c/6fcb0b745a0b80df62eae4a93ce52a2d061f4ac2 git.kernel.org: https://git.kernel.org/stable/c/bf242baf58de03467f226c8e29554c9495dca7fc git.kernel.org: https://git.kernel.org/stable/c/24974bd0da1b47fd56c975533ead50abf754e74d