RDMA/bnxt_re: Clear VM_MAYWRITE on DBR/toggle page mmap
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.
CVE-2026-92495
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-92495
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "ea222485788208cd79bad42d25aae9232b33a934",
"lessThan": "5361fb1e5bc246f9a2c0721543f72c8dac200769",
"versionType": "git"
},
{
"status": "affected",
"version": "ea222485788208cd79bad42d25aae9232b33a934",
"lessThan": "13e7861809ef9e7e720ff5f0af1d4293a6d0a9b4",
"versionType": "git"
},
{
"status": "affected",
"version": "ea222485788208cd79bad42d25aae9232b33a934",
"lessThan": "0afbfe019c881483337d9f8304e678af05ebe7cc",
"versionType": "git"
},
{
"status": "affected",
"version": "ea222485788208cd79bad42d25aae9232b33a934",
"lessThan": "518df61b9b0a5b288dfa72c87246045329c18b8c",
"versionType": "git"
},
{
"status": "affected",
"version": "ea222485788208cd79bad42d25aae9232b33a934",
"lessThan": "9b66c9af7172ffcf727214fa0ebe9a5e1ed6eb16",
"versionType": "git"
}
],
"programFiles": [
"drivers/infiniband/hw/bnxt_re/ib_verbs.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "6.6"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "6.6",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.6.157",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.110",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.52",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.2.6",
"versionType": "semver",
"lessThanOrEqual": "7.2.*"
},
{
"status": "unaffected",
"version": "7.3",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/infiniband/hw/bnxt_re/ib_verbs.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-92495
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #37728 · Revision 1
- Added to Heist Feed
- Publisher date