{"id":"CVE-2026-92495","title":"In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/bnxt_re: Clear VM_MAYWRITE on DBR/toggle page mmap\n\nbnxt_re_mmap() rejects VM_WRITE for the DBR_PAGE and TOGGLE_PAGE mmap\nflags, but a read-only mapping can still …","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/bnxt_re: Clear VM_MAYWRITE on DBR/toggle page mmap\n\nbnxt_re_mmap() rejects VM_WRITE for the DBR_PAGE and TOGGLE_PAGE mmap\nflags, but a read-only mapping can still …","severity":"high","vendor":"Linux","product":"Linux","affected":["Linux >= ea222485788208cd79bad42d25aae9232b33a934 < 5361fb1e5bc246f9a2c0721543f72c8dac200769","Linux >= ea222485788208cd79bad42d25aae9232b33a934 < 13e7861809ef9e7e720ff5f0af1d4293a6d0a9b4","Linux >= ea222485788208cd79bad42d25aae9232b33a934 < 0afbfe019c881483337d9f8304e678af05ebe7cc","Linux >= ea222485788208cd79bad42d25aae9232b33a934 < 518df61b9b0a5b288dfa72c87246045329c18b8c","Linux >= ea222485788208cd79bad42d25aae9232b33a934 < 9b66c9af7172ffcf727214fa0ebe9a5e1ed6eb16","Linux 6.6"],"published":"2026-09-17","updated":"2026-09-17","sourceUpdated":"2026-09-17T17:17:51.670","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-92495","references":[{"url":"https://git.kernel.org/stable/c/0afbfe019c881483337d9f8304e678af05ebe7cc","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/13e7861809ef9e7e720ff5f0af1d4293a6d0a9b4","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/518df61b9b0a5b288dfa72c87246045329c18b8c","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/5361fb1e5bc246f9a2c0721543f72c8dac200769","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/9b66c9af7172ffcf727214fa0ebe9a5e1ed6eb16","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-92495.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-92495"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2536521"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-92495"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-92495"},{"url":"https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-92495.mbox"}],"tags":["nvd","cve.org","csaf","vex","red-hat"],"ingestedAt":"2026-09-17T16:21:47.784Z","epss":0.0021,"epssPercentile":0.11154,"cvss":7,"cvssVector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","cvssSource":"vendor","cwe":["CWE-266"],"slug":"CVE-2026-92495","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/bnxt_re: Clear VM_MAYWRITE on DBR/toggle page mmap\n\nbnxt_re_mmap() rejects VM_WRITE for the DBR_PAGE and TOGGLE_PAGE mmap\nflags, but a read-only mapping can still retain VM_MAYWRITE. nd later\nbe upgraded with mprotect(PROT_WRITE). This can bypass the write check\nthat only runs at mmap time.\n\nClear VM_MAYWRITE before vm_insert_page() in the shared DBR/toggle-page\nbranch, matching the existing policy that userspace writes are not\nexpected for these pages.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Vendor advisories\n\n- **Red Hat VEX** · Moderate · affected: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4 · no fix planned: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4 · updated 2026-10-20 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-92495.json)","depth":"twilight","depthScore":39,"depthScoreParts":{"impact":38.5,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":225553,"id":"CVE-2026-92495","ts":1792498293742,"field":"cvss","old":null,"new":"7"},{"seq":225552,"id":"CVE-2026-92495","ts":1792498293742,"field":"severity","old":"none","new":"high"}]}