RDMA/bnxt_re: Clear VM_MAYWRITE on DBR/toggle page mmap (CVE-2026-92495) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-92495

RDMA/bnxt_re: Clear VM_MAYWRITE on DBR/toggle page mmap

Answer in brief

CVE-2026-92495 records a Unknown severity vulnerability in RDMA/bnxt_re: Clear VM_MAYWRITE on DBR/toggle page mmap. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 17, 2026Updated Sep 17, 2026Source checked Sep 17, 2026First seen by HOL Sep 17, 2026Material review Sep 17, 2026

Upstream Advisory

Key facts

Risk: Unknown severitySource severity not reported
Exploitation: Not marked as known exploited
Affected software: 2 mapped packages or products
Fix availability: Available

Why this deserves its current priority

A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Linux/Linuxgeneric	>=ea222485788208cd79bad42d25aae9232b33a934 <5361fb1e5bc246f9a2c0721543f72c8dac200769 \|\| >=ea222485788208cd79bad42d25aae9232b33a934 <13e7861809ef9e7e720ff5f0af1d4293a6d0a9b4 \|\| >=ea222485788208cd79bad42d25aae9232b33a934 <0afbfe019c881483337d9f8304e678af05ebe7cc \|\| >=ea222485788208cd79bad42d25aae9232b33a934 <518df61b9b0a5b288dfa72c87246045329c18b8c \|\| >=ea222485788208cd79bad42d25aae9232b33a934 <9b66c9af7172ffcf727214fa0ebe9a5e1ed6eb16	5361fb1e5bc246f9a2c0721543f72c8dac200769, 13e7861809ef9e7e720ff5f0af1d4293a6d0a9b4, 0afbfe019c881483337d9f8304e678af05ebe7cc, 518df61b9b0a5b288dfa72c87246045329c18b8c, 9b66c9af7172ffcf727214fa0ebe9a5e1ed6eb16
Linux/Linuxgeneric	6.6	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux.
Review the reported fix. Update Linux/Linux to 5361fb1e5bc246f9a2c0721543f72c8dac200769 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Sep 17, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 17, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Sep 17, 2026

Sources and claim methodology

Upstream source 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.

Quoted source text, attributed separately from HOL analysis.