VULN/vuln-cve
1
0 Fork 0
Code Pull Requests Actions Activity
Files
c1444140e59c61ba154436ea0cd6284d8a97c3f0
vuln-cve/data/2026/89xxx/CVE-2026-89972.json
T

264 lines
14 KiB
JSON
Raw Blame History

{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2026-89972",
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"state": "PUBLISHED",
"assignerShortName": "Linux",
"dateReserved": "2026-09-11T19:38:34.778Z",
"datePublished": "2026-09-16T10:32:51.701Z",
"dateUpdated": "2026-10-30T12:33:38.726Z"
},
"containers": {
"cna": {
"providerMetadata": {
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux",
"dateUpdated": "2026-10-30T12:33:38.726Z"
},
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnvme: add missing SRCU grace period in error path\n\nnvme_alloc_ns() error path at out_unlink_ns removes ns from the\nnamespace head siblings list with list_del_rcu(&ns->siblings) but\ndoes not wait for SRCU readers before freeing the namespace struct.\nMultipath code iterates the head->list under srcu_read_lock() in\nnvme_find_path() and nvme_mpath_revalidate_paths(), so a concurrent\nreader can still hold a reference to ns when kfree(ns) runs.\n\nThe normal removal path in nvme_ns_remove() correctly calls\nsynchronize_srcu(&ns->head->srcu) after list_del_rcu() to wait for\nin-progress readers. Add the same grace period in the error path."
}
],
"metrics": [
{
"cvssV3_1": {
"version": "3.1",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"baseScore": 9.8,
"baseSeverity": "CRITICAL"
},
"scenarios": [
{
"lang": "en",
"value": "AV:N - NVMe host core scans namespaces from NVMe-oF (nvme-tcp/rdma/fc) when a remote target sends NS_CHANGED AENs or Identify data; a malicious or compromised fabric target drives nvme_scan_ns→nvme_alloc_ns and the out_unlink_ns UAF over the network (typically TCP 4420).\nAC:L - The remote target controls both sides of the race: it can stall then fail Identify after list_add_tail_rcu so the new path is on head->list, while concurrent multipath I/O or ANA AENs walk that list under srcu_read_lock in nvme_find_path/nvme_mpath_revalidate_paths; CONFIG_NVME_MULTIPATH is the recommended default.\nPR:N - The attacker is the NVMe-oF peer and needs no host account or capability; NVMe/TCP is unauthenticated by default (TLS and DH-HMAC-CHAP are optional), and AENs plus Identify responses are accepted on an already-established fabrics session.\nUI:N - NVMe-oF controllers are persistent boot/autoconnect configuration; namespace rescans, ANA updates, and multipath I/O run from kernel workqueues and the block layer with no further victim action at exploit time.\nS:U - The use-after-free corrupts kernel heap (struct nvme_ns) inside the host NVMe driver and does not cross a VM, IOMMU, or other distinct security authority.\nC:H - Use-after-free of the namespace object on the multipath siblings list lets an attacker reclaim the kmalloc slab and obtain a kernel read primitive from stale ns->disk/ctrl/flags dereferences in nvme_find_path.\nI:H - The same UAF is heap-sprayable: multipath I/O and ioctl paths dereference fields of the freed nvme_ns, enabling arbitrary write and control-flow hijacking in kernel context.\nA:H - Any use-after-free of ns during the SRCU list walk can oops or panic the host kernel even without a full exploit, taking down the NVMe storage stack."
}
]
}
],
"affected": [
{
"product": "Linux",
"vendor": "Linux",
"defaultStatus": "unaffected",
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"programFiles": [
"drivers/nvme/host/core.c"
],
"versions": [
{
"version": "ed754e5deeb17f4e675c84e4b6c640cc7344e498",
"lessThan": "037e71058e8a59568db72015d4386f54e54dff77",
"status": "affected",
"versionType": "git"
},
{
"version": "ed754e5deeb17f4e675c84e4b6c640cc7344e498",
"lessThan": "7f180cef9f3421ece85c43bfdc326ce5875845bb",
"status": "affected",
"versionType": "git"
},
{
"version": "ed754e5deeb17f4e675c84e4b6c640cc7344e498",
"lessThan": "da710ec2a70a85de73afd4f7869b234fd9ede49e",
"status": "affected",
"versionType": "git"
},
{
"version": "ed754e5deeb17f4e675c84e4b6c640cc7344e498",
"lessThan": "3868476cd39161f18720582df17a1b621e805b5d",
"status": "affected",
"versionType": "git"
},
{
"version": "ed754e5deeb17f4e675c84e4b6c640cc7344e498",
"lessThan": "0d4735418512ef825176726eaaa8bd6a35f6b46d",
"status": "affected",
"versionType": "git"
},
{
"version": "ed754e5deeb17f4e675c84e4b6c640cc7344e498",
"lessThan": "d663944dbad81bb0e3635d7090db4713e6300858",
"status": "affected",
"versionType": "git"
},
{
"version": "ed754e5deeb17f4e675c84e4b6c640cc7344e498",
"lessThan": "76023560d60f10b4f808941163aa2975f1631683",
"status": "affected",
"versionType": "git"
},
{
"version": "ed754e5deeb17f4e675c84e4b6c640cc7344e498",
"lessThan": "ef248d5de4469fb6bbaf8dbe0c4c47800080d648",
"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/nvme/host/core.c"
],
"versions": [
{
"version": "4.15",
"status": "affected"
},
{
"version": "0",
"lessThan": "4.15",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "5.10.273",
"lessThanOrEqual": "5.10.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "5.15.224",
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.1.191",
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.6.160",
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.12.112",
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.18.51",
"lessThanOrEqual": "6.18.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "7.2.5",
"lessThanOrEqual": "7.2.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "7.3",
"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": "4.15",
"versionEndExcluding": "5.10.273"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "4.15",
"versionEndExcluding": "5.15.224"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "4.15",
"versionEndExcluding": "6.1.191"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "4.15",
"versionEndExcluding": "6.6.160"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "4.15",
"versionEndExcluding": "6.12.112"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "4.15",
"versionEndExcluding": "6.18.51"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "4.15",
"versionEndExcluding": "7.2.5"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "4.15",
"versionEndExcluding": "7.3"
}
]
}
]
}
],
"references": [
{
"url": "https://git.kernel.org/stable/c/037e71058e8a59568db72015d4386f54e54dff77"
},
{
"url": "https://git.kernel.org/stable/c/7f180cef9f3421ece85c43bfdc326ce5875845bb"
},
{
"url": "https://git.kernel.org/stable/c/da710ec2a70a85de73afd4f7869b234fd9ede49e"
},
{
"url": "https://git.kernel.org/stable/c/3868476cd39161f18720582df17a1b621e805b5d"
},
{
"url": "https://git.kernel.org/stable/c/0d4735418512ef825176726eaaa8bd6a35f6b46d"
},
{
"url": "https://git.kernel.org/stable/c/d663944dbad81bb0e3635d7090db4713e6300858"
},
{
"url": "https://git.kernel.org/stable/c/76023560d60f10b4f808941163aa2975f1631683"
},
{
"url": "https://git.kernel.org/stable/c/ef248d5de4469fb6bbaf8dbe0c4c47800080d648"
}
],
"title": "nvme: add missing SRCU grace period in error path",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
}
}
View Git Blame Copy Permalink