241 lines
12 KiB
JSON
241 lines
12 KiB
JSON
{
|
|
"dataType": "CVE_RECORD",
|
|
"dataVersion": "5.2",
|
|
"cveMetadata": {
|
|
"cveId": "CVE-2025-40170",
|
|
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
|
|
"state": "PUBLISHED",
|
|
"assignerShortName": "Linux",
|
|
"dateReserved": "2025-04-16T07:20:57.176Z",
|
|
"datePublished": "2025-11-12T10:46:52.014Z",
|
|
"dateUpdated": "2026-10-30T12:22:55.694Z"
|
|
},
|
|
"containers": {
|
|
"cna": {
|
|
"providerMetadata": {
|
|
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
|
|
"shortName": "Linux",
|
|
"dateUpdated": "2026-10-30T12:22:55.694Z"
|
|
},
|
|
"descriptions": [
|
|
{
|
|
"lang": "en",
|
|
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: use dst_dev_rcu() in sk_setup_caps()\n\nUse RCU to protect accesses to dst->dev from sk_setup_caps()\nand sk_dst_gso_max_size().\n\nAlso use dst_dev_rcu() in ip6_dst_mtu_maybe_forward(),\nand ip_dst_mtu_maybe_forward().\n\nip4_dst_hoplimit() can use dst_dev_net_rcu()."
|
|
}
|
|
],
|
|
"metrics": [
|
|
{
|
|
"cvssV3_1": {
|
|
"version": "3.1",
|
|
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
|
|
"baseScore": 7.8,
|
|
"baseSeverity": "HIGH"
|
|
},
|
|
"scenarios": [
|
|
{
|
|
"lang": "en",
|
|
"value": "AV:L - The unprotected `sk_setup_caps()` reader is reached from process-context syscalls (connect/sendmsg/SCTP output), and the racing `dst_dev_put()`/netdev-unregister side requires local netns and link/route manipulation; the remote-triggered call site (`tcp_v4_syn_recv_sock`) runs BH-disabled and is implicitly RCU-protected.\nAC:L - The attacker controls both sides of the race — one thread loops connect()/sendmsg() on sockets holding the dst while another deletes the veth/route in its own netns — and can retry indefinitely until the window is hit.\nPR:L - An unprivileged local account suffices; CAP_NET_ADMIN needed for link/route teardown is obtainable without real root via user namespaces (`unshare -Urn`), and the socket side needs no privilege at all.\nUI:N - Exploitation is entirely driven by the attacker's own threads issuing socket syscalls and netlink link/route operations; no victim action is required.\nS:U - The use-after-free is on a kernel `struct net_device` and its effects stay within the kernel's own security authority, with no crossing of a VM, IOMMU, or sandbox boundary.\nC:H - This is a use-after-free read of a freed, heap-sprayable `net_device`; its contents are loaded into `sk_route_caps`, `sk_gso_max_size` and `sk_gso_max_segs`, which observably alter TCP segmentation and thus leak freed-memory contents, and per UAF guidance this is High.\nI:H - Values read from freed memory are written into persistent socket state and then drive packet construction — bogus SG/HW_CSUM/GSO feature bits and an underflowed multi-gigabyte `sk_gso_max_size` corrupt the TX path, and a UAF on a sprayable object is treatable as an arbitrary-write primitive.\nA:H - Dereferencing a freed `net_device` can oops outright, and the resulting garbage GSO sizes/segment counts produce oversized skb allocations and inconsistent offload state that crash the transmit path and drivers."
|
|
}
|
|
]
|
|
}
|
|
],
|
|
"affected": [
|
|
{
|
|
"product": "Linux",
|
|
"vendor": "Linux",
|
|
"defaultStatus": "unaffected",
|
|
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
|
|
"programFiles": [
|
|
"include/net/ip.h",
|
|
"include/net/ip6_route.h",
|
|
"include/net/route.h",
|
|
"net/core/sock.c"
|
|
],
|
|
"versions": [
|
|
{
|
|
"version": "4a6ce2b6f2ecabbddcfe47e7cf61dd0f00b10e36",
|
|
"lessThan": "13b0e14bfa7e6d506d8d6426b9e6d7feef01ded3",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
},
|
|
{
|
|
"version": "4a6ce2b6f2ecabbddcfe47e7cf61dd0f00b10e36",
|
|
"lessThan": "9f22b5f7f1a32f8bbcc82bf34e34ea63523fcd02",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
},
|
|
{
|
|
"version": "4a6ce2b6f2ecabbddcfe47e7cf61dd0f00b10e36",
|
|
"lessThan": "5d1be493d1110c9e720b4c51a6e587bb2fb4ac12",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
},
|
|
{
|
|
"version": "4a6ce2b6f2ecabbddcfe47e7cf61dd0f00b10e36",
|
|
"lessThan": "a805729c0091073d8f0415cfa96c7acd1bc17a48",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
},
|
|
{
|
|
"version": "4a6ce2b6f2ecabbddcfe47e7cf61dd0f00b10e36",
|
|
"lessThan": "99a2ace61b211b0be861b07fbaa062fca4b58879",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"product": "Linux",
|
|
"vendor": "Linux",
|
|
"defaultStatus": "affected",
|
|
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
|
|
"programFiles": [
|
|
"include/net/ip.h",
|
|
"include/net/ip6_route.h",
|
|
"include/net/route.h",
|
|
"net/core/sock.c"
|
|
],
|
|
"versions": [
|
|
{
|
|
"version": "4.13",
|
|
"status": "affected"
|
|
},
|
|
{
|
|
"version": "0",
|
|
"lessThan": "4.13",
|
|
"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": "6.12.64",
|
|
"lessThanOrEqual": "6.12.*",
|
|
"status": "unaffected",
|
|
"versionType": "semver"
|
|
},
|
|
{
|
|
"version": "6.17.3",
|
|
"lessThanOrEqual": "6.17.*",
|
|
"status": "unaffected",
|
|
"versionType": "semver"
|
|
},
|
|
{
|
|
"version": "6.18",
|
|
"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": "4.13",
|
|
"versionEndExcluding": "6.1.191"
|
|
},
|
|
{
|
|
"vulnerable": true,
|
|
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
|
|
"versionStartIncluding": "4.13",
|
|
"versionEndExcluding": "6.6.160"
|
|
},
|
|
{
|
|
"vulnerable": true,
|
|
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
|
|
"versionStartIncluding": "4.13",
|
|
"versionEndExcluding": "6.12.64"
|
|
},
|
|
{
|
|
"vulnerable": true,
|
|
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
|
|
"versionStartIncluding": "4.13",
|
|
"versionEndExcluding": "6.17.3"
|
|
},
|
|
{
|
|
"vulnerable": true,
|
|
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
|
|
"versionStartIncluding": "4.13",
|
|
"versionEndExcluding": "6.18"
|
|
}
|
|
]
|
|
}
|
|
]
|
|
}
|
|
],
|
|
"references": [
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/13b0e14bfa7e6d506d8d6426b9e6d7feef01ded3"
|
|
},
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/9f22b5f7f1a32f8bbcc82bf34e34ea63523fcd02"
|
|
},
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/5d1be493d1110c9e720b4c51a6e587bb2fb4ac12"
|
|
},
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/a805729c0091073d8f0415cfa96c7acd1bc17a48"
|
|
},
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/99a2ace61b211b0be861b07fbaa062fca4b58879"
|
|
}
|
|
],
|
|
"title": "net: use dst_dev_rcu() in sk_setup_caps()",
|
|
"x_generator": {
|
|
"engine": "bippy-1.2.0"
|
|
}
|
|
},
|
|
"adp": [
|
|
{
|
|
"metrics": [
|
|
{
|
|
"other": {
|
|
"type": "ssvc",
|
|
"content": {
|
|
"timestamp": "2026-06-16T19:33:10.426175Z",
|
|
"id": "CVE-2025-40170",
|
|
"options": [
|
|
{
|
|
"Exploitation": "none"
|
|
},
|
|
{
|
|
"Automatable": "yes"
|
|
},
|
|
{
|
|
"Technical Impact": "partial"
|
|
}
|
|
],
|
|
"role": "CISA Coordinator",
|
|
"version": "2.0.3"
|
|
}
|
|
}
|
|
}
|
|
],
|
|
"title": "CISA ADP Vulnrichment",
|
|
"providerMetadata": {
|
|
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
|
|
"shortName": "CISA-ADP",
|
|
"dateUpdated": "2026-06-16T19:33:20.303Z"
|
|
}
|
|
}
|
|
]
|
|
}
|
|
} |