RDMA/bnxt_re: Clear VM_MAYWRITE on DBR/toggle page mmap (Linux Linux)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.21 % · percentile 11 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- Linux
- NVD status
- Received
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.
References
- https://git.kernel.org/stable/c/5361fb1e5bc246f9a2c0721543f72c8dac200769
- https://git.kernel.org/stable/c/13e7861809ef9e7e720ff5f0af1d4293a6d0a9b4
- https://git.kernel.org/stable/c/0afbfe019c881483337d9f8304e678af05ebe7cc
- https://git.kernel.org/stable/c/518df61b9b0a5b288dfa72c87246045329c18b8c
- https://git.kernel.org/stable/c/9b66c9af7172ffcf727214fa0ebe9a5e1ed6eb16
European references
- ENISA EUVD · EUVD-2026-82116
- GCVE · GCVE-0-2026-92495
CERT-FR advisories
- CERTFR-2026-AVI-1385 — Multiples vulnérabilités dans les produits VMware · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1372 — Multiples vulnérabilités dans les produits SUSE · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1335 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1289 — Multiples vulnérabilités dans le noyau Linux de Debian LTS · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1253 — Multiples vulnérabilités dans le noyau Linux de Debian · cert.ssi.gouv.fr
Affected products
| Product | Versions |
|---|---|
| Linux · Linux | affected ea222485788208cd79bad42d25aae9232b33a934 < 5361fb1e5bc246f9a2c0721543f72c8dac200769 ; affected ea222485788208cd79bad42d25aae9232b33a934 < 13e7861809ef9e7e720ff5f0af1d4293a6d0a9b4 ; affected ea222485788208cd79bad42d25aae9232b33a934 < 0afbfe019c881483337d9f8304e678af05ebe7cc ; affected ea222485788208cd79bad42d25aae9232b33a934 < 518df61b9b0a5b288dfa72c87246045329c18b8c ; affected ea222485788208cd79bad42d25aae9232b33a934 < 9b66c9af7172ffcf727214fa0ebe9a5e1ed6eb16 |
| Linux · Linux | affected 6.6 ; unaffected 0 < 6.6 ; unaffected 6.6.157 ≤ 6.6.* ; unaffected 6.12.110 ≤ 6.12.* ; unaffected 6.18.52 ≤ 6.18.* ; unaffected 7.2.6 ≤ 7.2.* |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| CERT-FR (ANSSI) | Licence Ouverte / Etalab 2.0 |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |