Description
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.
Metrics
No CVSS score has been published yet.
Affected software
Source: the vendor's advisory (CNA). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | >= ea222485788208cd79bad42d25aae9232b33a934, < 5361fb1e5bc246f9a2c0721543f72c8dac200769; >= ea222485788208cd79bad42d25aae9232b33a934, < 13e7861809ef9e7e720ff5f0af1d4293a6d0a9b4; >= ea222485788208cd79bad42d25aae9232b33a934, < 0afbfe019c881483337d9f8304e678af05ebe7cc; >= ea222485788208cd79bad42d25aae9232b33a934, < 518df61b9b0a5b288dfa72c87246045329c18b8c; >= ea222485788208cd79bad42d25aae9232b33a934, < 9b66c9af7172ffcf727214fa0ebe9a5e1ed6eb16 |
| Linux | Linux | 6.6 |
References
- 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
Timeline
- Published
- Sep 17, 2026
- Last modified
- Oct 19, 2026
- NVD status
- Received