CVE-2026-92495

In the Linux kernel, the following vulnerability has been resolved: RDMA/bnxt_re: Clear VM_MAYWRITE on DBR/toggle page mmap bnxt_re_mmap() rejects VM_WRITE for the DBR_PAGE and TOGGLE_PAGE mmap flags, but a read-only mapping can still retain VM_MAYWRITE. nd later be upgraded with mprotect(PROT_WRITE). This can bypass the write check that only runs at mmap time. Clear VM_MAYWRITE before vm_insert_page() in the shared DBR/toggle-page branch, matching the existing policy that userspace writes are not expected for these pages.

• https://git.kernel.org/stable/c/0afbfe019c881483337d9f8304e678af05ebe7cc
• https://git.kernel.org/stable/c/13e7861809ef9e7e720ff5f0af1d4293a6d0a9b4
• https://git.kernel.org/stable/c/518df61b9b0a5b288dfa72c87246045329c18b8c
• https://git.kernel.org/stable/c/5361fb1e5bc246f9a2c0721543f72c8dac200769
• https://git.kernel.org/stable/c/9b66c9af7172ffcf727214fa0ebe9a5e1ed6eb16

Published

Sep 17, 2026

Last Modified

Sep 17, 2026

Status

Received

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