239 lines
12 KiB
JSON
239 lines
12 KiB
JSON
{
|
|
"dataType": "CVE_RECORD",
|
|
"dataVersion": "5.2",
|
|
"cveMetadata": {
|
|
"cveId": "CVE-2026-72495",
|
|
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
|
|
"state": "PUBLISHED",
|
|
"assignerShortName": "Linux",
|
|
"dateReserved": "2026-08-09T03:40:39.937Z",
|
|
"datePublished": "2026-08-15T05:57:28.920Z",
|
|
"dateUpdated": "2026-10-21T12:45:04.330Z"
|
|
},
|
|
"containers": {
|
|
"cna": {
|
|
"providerMetadata": {
|
|
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
|
|
"shortName": "Linux",
|
|
"dateUpdated": "2026-10-21T12:45:04.330Z"
|
|
},
|
|
"descriptions": [
|
|
{
|
|
"lang": "en",
|
|
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/bnxt_re: Avoid repeated requests to allocate WC pages\n\nApplications can request multiple WC pages for the same ucontext.\nAs of now, only 1 WC page per ucontext is supported. Add a lock to\navoid concurrent access and a check to fail repeated requests.\nAlso, if the mmap entry insert fails for the WC, free the Doorbell\npage index mapped for the WC page."
|
|
}
|
|
],
|
|
"metrics": [
|
|
{
|
|
"cvssV3_1": {
|
|
"version": "3.1",
|
|
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H",
|
|
"baseScore": 9.3,
|
|
"baseSeverity": "CRITICAL"
|
|
},
|
|
"scenarios": [
|
|
{
|
|
"lang": "en",
|
|
"value": "AV:L - The flaw is in BNXT_RE_METHOD_ALLOC_PAGE, reached only via write/ioctl on /dev/infiniband/uverbs* after IB ucontext creation; remote RoCE packet handling and in-kernel RDMA target/server paths never invoke this WC DPI allocation routine.\nAC:L - An attacker can deterministically trigger the bug by issuing repeated or concurrent BNXT_RE_ALLOC_WC_PAGE calls from multiple threads on the same ucontext; they control both sides of the race and need no uncontrollable memory layout or victim-specific state.\nPR:N - Standard uverbs character devices are created mode 0666, so any local process can open the bnxt_re device, allocate a ucontext, and invoke BNXT_RE_METHOD_ALLOC_PAGE without CAP_SYS_ADMIN, init-namespace root, or other elevated capabilities.\nUI:N - No victim interaction is required; exploitation needs only the attacker (or a compromised local RDMA workload) repeatedly or concurrently calling ALLOC_PAGE on resources it already controls through normal RDMA verbs.\nS:C - On HPC/cloud hosts exposing bnxt_re to tenant containers or unprivileged RDMA workloads, corrupting shared per-device DPI bookkeeping or exhausting finite doorbell indices crosses the container/tenant boundary to impact the host/kernel security authority.\nC:H - Without serialization or duplicate checks, corrupt DPI index bookkeeping and premature slot reuse can alias WC doorbell BAR pages across contexts, exposing other users' doorbell state and providing resource-corruption primitives usable for information disclosure.\nI:H - Destroying one ALLOC_PAGE object can deallocate another object's live WC DPI slot while its BAR mmap remains active, letting a later allocation share the same doorbell page and enabling cross-context WC doorbell writes that corrupt other tenants' RDMA queue signaling.\nA:H - Each orphaned DPI entry permanently consumes a finite per-device doorbell index (exhaustible via repeated or concurrent ALLOC_PAGE), denying RDMA service cluster-wide; unsynchronized wcdpi updates can also destabilize kernel DPI teardown paths."
|
|
}
|
|
]
|
|
}
|
|
],
|
|
"affected": [
|
|
{
|
|
"product": "Linux",
|
|
"vendor": "Linux",
|
|
"defaultStatus": "unaffected",
|
|
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
|
|
"programFiles": [
|
|
"drivers/infiniband/hw/bnxt_re/ib_verbs.c",
|
|
"drivers/infiniband/hw/bnxt_re/ib_verbs.h",
|
|
"drivers/infiniband/hw/bnxt_re/uapi.c"
|
|
],
|
|
"versions": [
|
|
{
|
|
"version": "360da60d6c6edb9740de7a8e6d8969d62ceff956",
|
|
"lessThan": "8e59bd37d6d63a06ed452eaffe6c9d4ad903af7b",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
},
|
|
{
|
|
"version": "360da60d6c6edb9740de7a8e6d8969d62ceff956",
|
|
"lessThan": "00c71846874fea4917961236e49287a1850dcf98",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
},
|
|
{
|
|
"version": "360da60d6c6edb9740de7a8e6d8969d62ceff956",
|
|
"lessThan": "478c4d24193fe3e6aa2accd4874ae43000e4a217",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
},
|
|
{
|
|
"version": "360da60d6c6edb9740de7a8e6d8969d62ceff956",
|
|
"lessThan": "da406b8b49c1dfe661a497483940d7ee781430db",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
},
|
|
{
|
|
"version": "360da60d6c6edb9740de7a8e6d8969d62ceff956",
|
|
"lessThan": "441baa79043431807115fd030d7d0bb14ed441a0",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"product": "Linux",
|
|
"vendor": "Linux",
|
|
"defaultStatus": "affected",
|
|
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
|
|
"programFiles": [
|
|
"drivers/infiniband/hw/bnxt_re/ib_verbs.c",
|
|
"drivers/infiniband/hw/bnxt_re/ib_verbs.h",
|
|
"drivers/infiniband/hw/bnxt_re/uapi.c"
|
|
],
|
|
"versions": [
|
|
{
|
|
"version": "6.5",
|
|
"status": "affected"
|
|
},
|
|
{
|
|
"version": "0",
|
|
"lessThan": "6.5",
|
|
"status": "unaffected",
|
|
"versionType": "semver"
|
|
},
|
|
{
|
|
"version": "6.6.160",
|
|
"lessThanOrEqual": "6.6.*",
|
|
"status": "unaffected",
|
|
"versionType": "semver"
|
|
},
|
|
{
|
|
"version": "6.12.114",
|
|
"lessThanOrEqual": "6.12.*",
|
|
"status": "unaffected",
|
|
"versionType": "semver"
|
|
},
|
|
{
|
|
"version": "6.18.40",
|
|
"lessThanOrEqual": "6.18.*",
|
|
"status": "unaffected",
|
|
"versionType": "semver"
|
|
},
|
|
{
|
|
"version": "7.1.5",
|
|
"lessThanOrEqual": "7.1.*",
|
|
"status": "unaffected",
|
|
"versionType": "semver"
|
|
},
|
|
{
|
|
"version": "7.2",
|
|
"lessThanOrEqual": "*",
|
|
"status": "unaffected",
|
|
"versionType": "original_commit_for_fix"
|
|
}
|
|
]
|
|
}
|
|
],
|
|
"cpeApplicability": [
|
|
{
|
|
"nodes": [
|
|
{
|
|
"operator": "OR",
|
|
"negate": false,
|
|
"cpeMatch": [
|
|
{
|
|
"vulnerable": true,
|
|
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
|
|
"versionStartIncluding": "6.5",
|
|
"versionEndExcluding": "6.6.160"
|
|
},
|
|
{
|
|
"vulnerable": true,
|
|
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
|
|
"versionStartIncluding": "6.5",
|
|
"versionEndExcluding": "6.12.114"
|
|
},
|
|
{
|
|
"vulnerable": true,
|
|
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
|
|
"versionStartIncluding": "6.5",
|
|
"versionEndExcluding": "6.18.40"
|
|
},
|
|
{
|
|
"vulnerable": true,
|
|
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
|
|
"versionStartIncluding": "6.5",
|
|
"versionEndExcluding": "7.1.5"
|
|
},
|
|
{
|
|
"vulnerable": true,
|
|
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
|
|
"versionStartIncluding": "6.5",
|
|
"versionEndExcluding": "7.2"
|
|
}
|
|
]
|
|
}
|
|
]
|
|
}
|
|
],
|
|
"references": [
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/8e59bd37d6d63a06ed452eaffe6c9d4ad903af7b"
|
|
},
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/00c71846874fea4917961236e49287a1850dcf98"
|
|
},
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/478c4d24193fe3e6aa2accd4874ae43000e4a217"
|
|
},
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/da406b8b49c1dfe661a497483940d7ee781430db"
|
|
},
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/441baa79043431807115fd030d7d0bb14ed441a0"
|
|
}
|
|
],
|
|
"title": "RDMA/bnxt_re: Avoid repeated requests to allocate WC pages",
|
|
"x_generator": {
|
|
"engine": "bippy-1.2.0"
|
|
}
|
|
},
|
|
"adp": [
|
|
{
|
|
"metrics": [
|
|
{
|
|
"other": {
|
|
"type": "ssvc",
|
|
"content": {
|
|
"id": "CVE-2026-72495",
|
|
"role": "CISA Coordinator",
|
|
"options": [
|
|
{
|
|
"Exploitation": "none"
|
|
},
|
|
{
|
|
"Automatable": "no"
|
|
},
|
|
{
|
|
"Technical Impact": "total"
|
|
}
|
|
],
|
|
"version": "2.0.3",
|
|
"timestamp": "2026-10-16T18:51:00.430753Z"
|
|
}
|
|
}
|
|
}
|
|
],
|
|
"title": "CISA ADP Vulnrichment",
|
|
"providerMetadata": {
|
|
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
|
|
"shortName": "CISA-ADP",
|
|
"dateUpdated": "2026-10-16T18:55:26.977Z"
|
|
}
|
|
}
|
|
]
|
|
}
|
|
} |