326 lines
17 KiB
JSON
326 lines
17 KiB
JSON
{
|
|
"dataType": "CVE_RECORD",
|
|
"dataVersion": "5.2",
|
|
"cveMetadata": {
|
|
"cveId": "CVE-2025-40248",
|
|
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
|
|
"state": "PUBLISHED",
|
|
"assignerShortName": "Linux",
|
|
"dateReserved": "2025-04-16T07:20:57.181Z",
|
|
"datePublished": "2025-12-04T16:08:11.509Z",
|
|
"dateUpdated": "2026-08-05T12:08:50.554Z"
|
|
},
|
|
"containers": {
|
|
"cna": {
|
|
"providerMetadata": {
|
|
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
|
|
"shortName": "Linux",
|
|
"dateUpdated": "2026-08-05T12:08:50.554Z"
|
|
},
|
|
"descriptions": [
|
|
{
|
|
"lang": "en",
|
|
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nvsock: Ignore signal/timeout on connect() if already established\n\nDuring connect(), acting on a signal/timeout by disconnecting an already\nestablished socket leads to several issues:\n\n1. connect() invoking vsock_transport_cancel_pkt() ->\n virtio_transport_purge_skbs() may race with sendmsg() invoking\n virtio_transport_get_credit(). This results in a permanently elevated\n `vvs->bytes_unsent`. Which, in turn, confuses the SOCK_LINGER handling.\n\n2. connect() resetting a connected socket's state may race with socket\n being placed in a sockmap. A disconnected socket remaining in a sockmap\n breaks sockmap's assumptions. And gives rise to WARNs.\n\n3. connect() transitioning SS_CONNECTED -> SS_UNCONNECTED allows for a\n transport change/drop after TCP_ESTABLISHED. Which poses a problem for\n any simultaneous sendmsg() or connect() and may result in a\n use-after-free/null-ptr-deref.\n\nDo not disconnect socket on signal/timeout. Keep the logic for unconnected\nsockets: they don't linger, can't be placed in a sockmap, are rejected by\nsendmsg().\n\n[1]: https://lore.kernel.org/netdev/e07fd95c-9a38-4eea-9638-133e38c2ec9b@rbox.co/\n[2]: https://lore.kernel.org/netdev/20250317-vsock-trans-signal-race-v4-0-fc8837f3f1d4@rbox.co/\n[3]: https://lore.kernel.org/netdev/60f1b7db-3099-4f6a-875e-af9f6ef194f6@rbox.co/"
|
|
}
|
|
],
|
|
"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 vulnerability is triggered through AF_VSOCK socket syscalls (connect/sendmsg) plus signal delivery from a local process; per kernel scoring guidance vsock is a local attack surface. No network packet from an unauthenticated remote peer can drive the signal/timeout race.\nAC:L - The attacker controls both sides of the race — the listening peer (vsock_loopback/VMADDR_CID_LOCAL requires no VM), the exact moment of connection establishment, the signal storm from a sibling thread, and the concurrent sendmsg()/second connect() — and can retry indefinitely until the window is hit.\nPR:L - vsock_create() performs no capability check, so any unprivileged local user (including inside a container) can create AF_VSOCK sockets and reach vsock_connect(). No root, CAP_NET_ADMIN, or namespace trickery is needed.\nUI:N - The attacker's own threads perform every step — connect, accept, signal delivery, and the follow-up connect/sendmsg. No victim action is required.\nS:U - The corruption and its impact are confined to the kernel's own security authority; there is no guest-to-host or IOMMU boundary crossing involved in the freed vsock transport state.\nC:H - The transport change/drop after TCP_ESTABLISHED yields a use-after-free of the kmalloc'd virtio_vsock_sock and a stale transport ops pointer reachable from sendmsg(); heap reclaim of the freed object gives an attacker-controlled read primitive over kernel memory.\nI:H - The same use-after-free permits heap spraying over the freed transport state and invocation of function pointers from a stale ops/module reference, providing a write and control-flow hijack primitive as in prior vsock UAF exploits.\nA:H - The commit explicitly notes use-after-free/NULL-pointer dereference, plus sockmap WARNs and a permanently elevated bytes_unsent that breaks SOCK_LINGER handling — any of which oops or hang the kernel, and the race can be re-run at will."
|
|
}
|
|
]
|
|
}
|
|
],
|
|
"affected": [
|
|
{
|
|
"product": "Linux",
|
|
"vendor": "Linux",
|
|
"defaultStatus": "unaffected",
|
|
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
|
|
"programFiles": [
|
|
"net/vmw_vsock/af_vsock.c"
|
|
],
|
|
"versions": [
|
|
{
|
|
"version": "d021c344051af91f42c5ba9fdedc176740cbd238",
|
|
"lessThan": "3f71753935d648082a8279a97d30efe6b85be680",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
},
|
|
{
|
|
"version": "d021c344051af91f42c5ba9fdedc176740cbd238",
|
|
"lessThan": "da664101fb4a0de5cb70d2bae6a650df954df2af",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
},
|
|
{
|
|
"version": "d021c344051af91f42c5ba9fdedc176740cbd238",
|
|
"lessThan": "67432915145848658149683101104e32f9fd6559",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
},
|
|
{
|
|
"version": "d021c344051af91f42c5ba9fdedc176740cbd238",
|
|
"lessThan": "eeca93f06df89be5a36305b7b9dae1ed65550dfc",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
},
|
|
{
|
|
"version": "d021c344051af91f42c5ba9fdedc176740cbd238",
|
|
"lessThan": "5998da5a8208ae9ad7838ba322bccb2bdcd95e81",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
},
|
|
{
|
|
"version": "d021c344051af91f42c5ba9fdedc176740cbd238",
|
|
"lessThan": "f1c170cae285e4b8f61be043bb17addc3d0a14b5",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
},
|
|
{
|
|
"version": "d021c344051af91f42c5ba9fdedc176740cbd238",
|
|
"lessThan": "ab6b19f690d89ae4709fba73a3c4a7911f495b7a",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
},
|
|
{
|
|
"version": "d021c344051af91f42c5ba9fdedc176740cbd238",
|
|
"lessThan": "002541ef650b742a198e4be363881439bb9d86b4",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"product": "Linux",
|
|
"vendor": "Linux",
|
|
"defaultStatus": "affected",
|
|
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
|
|
"programFiles": [
|
|
"net/vmw_vsock/af_vsock.c"
|
|
],
|
|
"versions": [
|
|
{
|
|
"version": "3.9",
|
|
"status": "affected"
|
|
},
|
|
{
|
|
"version": "0",
|
|
"lessThan": "3.9",
|
|
"status": "unaffected",
|
|
"versionType": "semver"
|
|
},
|
|
{
|
|
"version": "5.4.302",
|
|
"lessThanOrEqual": "5.4.*",
|
|
"status": "unaffected",
|
|
"versionType": "semver"
|
|
},
|
|
{
|
|
"version": "5.10.247",
|
|
"lessThanOrEqual": "5.10.*",
|
|
"status": "unaffected",
|
|
"versionType": "semver"
|
|
},
|
|
{
|
|
"version": "5.15.197",
|
|
"lessThanOrEqual": "5.15.*",
|
|
"status": "unaffected",
|
|
"versionType": "semver"
|
|
},
|
|
{
|
|
"version": "6.1.159",
|
|
"lessThanOrEqual": "6.1.*",
|
|
"status": "unaffected",
|
|
"versionType": "semver"
|
|
},
|
|
{
|
|
"version": "6.6.118",
|
|
"lessThanOrEqual": "6.6.*",
|
|
"status": "unaffected",
|
|
"versionType": "semver"
|
|
},
|
|
{
|
|
"version": "6.12.60",
|
|
"lessThanOrEqual": "6.12.*",
|
|
"status": "unaffected",
|
|
"versionType": "semver"
|
|
},
|
|
{
|
|
"version": "6.17.10",
|
|
"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": "3.9",
|
|
"versionEndExcluding": "5.4.302"
|
|
},
|
|
{
|
|
"vulnerable": true,
|
|
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
|
|
"versionStartIncluding": "3.9",
|
|
"versionEndExcluding": "5.10.247"
|
|
},
|
|
{
|
|
"vulnerable": true,
|
|
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
|
|
"versionStartIncluding": "3.9",
|
|
"versionEndExcluding": "5.15.197"
|
|
},
|
|
{
|
|
"vulnerable": true,
|
|
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
|
|
"versionStartIncluding": "3.9",
|
|
"versionEndExcluding": "6.1.159"
|
|
},
|
|
{
|
|
"vulnerable": true,
|
|
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
|
|
"versionStartIncluding": "3.9",
|
|
"versionEndExcluding": "6.6.118"
|
|
},
|
|
{
|
|
"vulnerable": true,
|
|
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
|
|
"versionStartIncluding": "3.9",
|
|
"versionEndExcluding": "6.12.60"
|
|
},
|
|
{
|
|
"vulnerable": true,
|
|
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
|
|
"versionStartIncluding": "3.9",
|
|
"versionEndExcluding": "6.17.10"
|
|
},
|
|
{
|
|
"vulnerable": true,
|
|
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
|
|
"versionStartIncluding": "3.9",
|
|
"versionEndExcluding": "6.18"
|
|
}
|
|
]
|
|
}
|
|
]
|
|
}
|
|
],
|
|
"references": [
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/3f71753935d648082a8279a97d30efe6b85be680"
|
|
},
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/da664101fb4a0de5cb70d2bae6a650df954df2af"
|
|
},
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/67432915145848658149683101104e32f9fd6559"
|
|
},
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/eeca93f06df89be5a36305b7b9dae1ed65550dfc"
|
|
},
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/5998da5a8208ae9ad7838ba322bccb2bdcd95e81"
|
|
},
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/f1c170cae285e4b8f61be043bb17addc3d0a14b5"
|
|
},
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/ab6b19f690d89ae4709fba73a3c4a7911f495b7a"
|
|
},
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/002541ef650b742a198e4be363881439bb9d86b4"
|
|
}
|
|
],
|
|
"title": "vsock: Ignore signal/timeout on connect() if already established",
|
|
"x_generator": {
|
|
"engine": "bippy-1.2.0"
|
|
}
|
|
},
|
|
"adp": [
|
|
{
|
|
"x_adpType": "supplier",
|
|
"providerMetadata": {
|
|
"orgId": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e",
|
|
"shortName": "siemens-SADP",
|
|
"dateUpdated": "2026-06-02T12:59:57.735Z"
|
|
},
|
|
"affected": [
|
|
{
|
|
"vendor": "Siemens",
|
|
"product": "RUGGEDCOM RST2428P",
|
|
"versions": [
|
|
{
|
|
"status": "affected",
|
|
"version": "0",
|
|
"lessThan": "V4.0",
|
|
"versionType": "custom"
|
|
}
|
|
],
|
|
"defaultStatus": "unknown"
|
|
}
|
|
],
|
|
"references": [
|
|
{
|
|
"url": "https://cert-portal.siemens.com/productcert/html/ssa-253495.html"
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"metrics": [
|
|
{
|
|
"other": {
|
|
"type": "ssvc",
|
|
"content": {
|
|
"timestamp": "2026-06-16T20:01:10.557430Z",
|
|
"id": "CVE-2025-40248",
|
|
"options": [
|
|
{
|
|
"Exploitation": "none"
|
|
},
|
|
{
|
|
"Automatable": "no"
|
|
},
|
|
{
|
|
"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": "2026-06-16T20:01:18.965Z"
|
|
}
|
|
}
|
|
]
|
|
}
|
|
} |