CVE-2026-74634
In the Linux kernel, the following vulnerability has been resolved: ring-buffer: Prevent subbuf order change when resizing is disabled Bec
CVSS
7.8
High
EPSS
0.1%
p2
KEV
—
Exploit Today
1
0-100
Published: Aug 22, 2026 · Last modified: Oct 14, 2026
0.1%EPSS · 30 days0.2%
2026-09-272026-10-25
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.
- git.kernel.orghttps://git.kernel.org/stable/c/62978cf6347972c04130e4e841ba404504d92b32
- git.kernel.orghttps://git.kernel.org/stable/c/7568e9e717e7540bd05bcc007f5d76fcaff3cdff
- git.kernel.orghttps://git.kernel.org/stable/c/b45b91db41379ee5fb36c187d6d7c37b725cbe8e
- git.kernel.orghttps://git.kernel.org/stable/c/bf98d7b0d5a99991e47e66cee4eb1d3fa514be97
No related CVEs by CWE or product.