CVE-2026-92495
RDMA/bnxt_re: Clear VM_MAYWRITE on DBR/toggle page mmap
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Sep 17, 2026 |
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Affected Versions
Linux / Linux
ea222485788208cd79bad42d25aae9232b33a934 < 5361fb1e5bc246f9a2c0721543f72c8dac200769 ea222485788208cd79bad42d25aae9232b33a934 < 13e7861809ef9e7e720ff5f0af1d4293a6d0a9b4 ea222485788208cd79bad42d25aae9232b33a934 < 0afbfe019c881483337d9f8304e678af05ebe7cc ea222485788208cd79bad42d25aae9232b33a934 < 518df61b9b0a5b288dfa72c87246045329c18b8c ea222485788208cd79bad42d25aae9232b33a934 < 9b66c9af7172ffcf727214fa0ebe9a5e1ed6eb16
Linux / Linux
6.6
References
git.kernel.org: https://git.kernel.org/stable/c/5361fb1e5bc246f9a2c0721543f72c8dac200769 git.kernel.org: https://git.kernel.org/stable/c/13e7861809ef9e7e720ff5f0af1d4293a6d0a9b4 git.kernel.org: https://git.kernel.org/stable/c/0afbfe019c881483337d9f8304e678af05ebe7cc git.kernel.org: https://git.kernel.org/stable/c/518df61b9b0a5b288dfa72c87246045329c18b8c git.kernel.org: https://git.kernel.org/stable/c/9b66c9af7172ffcf727214fa0ebe9a5e1ed6eb16