{"id":"CVE-2026-92495","summary":"RDMA/bnxt_re: Clear VM_MAYWRITE on DBR/toggle page mmap","details":"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.","modified":"2026-09-18T03:48:40.444418132Z","published":"2026-09-17T16:10:10.747Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/92xxx/CVE-2026-92495.json"},"references":[{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"},{"type":"WEB","url":"https://git.kernel.org/stable/c/0afbfe019c881483337d9f8304e678af05ebe7cc"},{"type":"WEB","url":"https://git.kernel.org/stable/c/13e7861809ef9e7e720ff5f0af1d4293a6d0a9b4"},{"type":"WEB","url":"https://git.kernel.org/stable/c/518df61b9b0a5b288dfa72c87246045329c18b8c"},{"type":"WEB","url":"https://git.kernel.org/stable/c/5361fb1e5bc246f9a2c0721543f72c8dac200769"},{"type":"WEB","url":"https://git.kernel.org/stable/c/9b66c9af7172ffcf727214fa0ebe9a5e1ed6eb16"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/92xxx/CVE-2026-92495.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-92495"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"ea222485788208cd79bad42d25aae9232b33a934"},{"fixed":"5361fb1e5bc246f9a2c0721543f72c8dac200769"},{"fixed":"13e7861809ef9e7e720ff5f0af1d4293a6d0a9b4"},{"fixed":"0afbfe019c881483337d9f8304e678af05ebe7cc"},{"fixed":"518df61b9b0a5b288dfa72c87246045329c18b8c"},{"fixed":"9b66c9af7172ffcf727214fa0ebe9a5e1ed6eb16"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-92495.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"6.6.0"},{"fixed":"6.6.157"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.110"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.52"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.2.6"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-92495.json"}}],"schema_version":"1.9.0"}