CVE-2026-74634

In the Linux kernel, the following vulnerability has been resolved: ring-buffer: Prevent subbuf order change when resizing is disabled Because ring_buffer_subbuf_order_set() frees buffer pages, we can't allow it when resizing is disabled. A non-consuming reader is at risk of use-after-free (rb_advance_iter()). Return -EBUSY on resize_disabled, matching ring_buffer_resize() behaviour.

CVSS v3 7.8 HIGH

7.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/stable/c/62978cf6347972c04130e4e841ba404504d92b32
https://git.kernel.org/stable/c/7568e9e717e7540bd05bcc007f5d76fcaff3cdff
https://git.kernel.org/stable/c/b45b91db41379ee5fb36c187d6d7c37b725cbe8e
https://git.kernel.org/stable/c/bf98d7b0d5a99991e47e66cee4eb1d3fa514be97

Configurations

No configuration.

History

No history.

Information

Published : 2026-08-22 16:16

Updated : 2026-08-25 06:18

NVD link : CVE-2026-74634

Mitre link : CVE-2026-74634

CVE.ORG link : CVE-2026-74634

JSON object : View

Products Affected

No product.

CWE

No CWE.

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