{"id":"CVE-2026-92495","revision":"f8f2638ce83245be9ec612f36b7af2ef","records":[{"revision":"f8f2638ce83245be9ec612f36b7af2ef","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-92495","aliases":[],"title":"RDMA/bnxt_re: Clear VM_MAYWRITE on DBR/toggle page mmap","description":"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 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.","state":0,"publishedAt":"2026-09-17T16:10:10.747+00:00","modifiedAt":"2026-10-19T09:04:01.51+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/infiniband/hw/bnxt_re/ib_verbs.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"ea222485788208cd79bad42d25aae9232b33a934\",\n                            \"lessThan\": \"5361fb1e5bc246f9a2c0721543f72c8dac200769\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"ea222485788208cd79bad42d25aae9232b33a934\",\n                            \"lessThan\": \"13e7861809ef9e7e720ff5f0af1d4293a6d0a9b4\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"ea222485788208cd79bad42d25aae9232b33a934\",\n                            \"lessThan\": \"0afbfe019c881483337d9f8304e678af05ebe7cc\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"ea222485788208cd79bad42d25aae9232b33a934\",\n                            \"lessThan\": \"518df61b9b0a5b288dfa72c87246045329c18b8c\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"ea222485788208cd79bad42d25aae9232b33a934\",\n                            \"lessThan\": \"9b66c9af7172ffcf727214fa0ebe9a5e1ed6eb16\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"affected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/infiniband/hw/bnxt_re/ib_verbs.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"6.6\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"6.6\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.157\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.110\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.52\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2.6\",\n                            \"lessThanOrEqual\": \"7.2.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.3\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[],"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"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-92495","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-92495","identifiers":["CVE-2026-92495"]},"retained":false,"historicalAffected":[]}],"coverage":[]}