526 lines
25 KiB
JSON
526 lines
25 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2026-23242",
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"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"state": "PUBLISHED",
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"assignerShortName": "Linux",
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"dateReserved": "2026-01-13T15:37:45.989Z",
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"datePublished": "2026-03-18T10:05:05.108Z",
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"dateUpdated": "2026-11-10T12:41:59.599Z"
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},
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"cna": {
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"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"shortName": "Linux",
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"dateUpdated": "2026-08-05T12:20:52.020Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/siw: Fix potential NULL pointer dereference in header processing\n\nIf siw_get_hdr() returns -EINVAL before set_rx_fpdu_context(),\nqp->rx_fpdu can be NULL. The error path in siw_tcp_rx_data()\ndereferences qp->rx_fpdu->more_ddp_segs without checking, which\nmay lead to a NULL pointer deref. Only check more_ddp_segs when\nrx_fpdu is present.\n\nKASAN splat:\n[ 101.384271] KASAN: null-ptr-deref in range [0x00000000000000c0-0x00000000000000c7]\n[ 101.385869] RIP: 0010:siw_tcp_rx_data+0x13ad/0x1e50"
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"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
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"baseScore": 7.5,
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"baseSeverity": "HIGH"
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},
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{
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"value": "AV:N - SIW (Software iWARP) operates over TCP connections. A remote RDMA peer can send malformed DDP/RDMAP packets with invalid version or opcode fields to trigger the NULL pointer dereference in the TCP receive callback siw_tcp_rx_data().\nAC:L - The attacker can reliably trigger the bug by sending a malformed DDP packet with an invalid version or opcode field after establishing the TCP/RDMA connection. No race condition or special conditions required.\nPR:N - The vulnerability is triggered during iWARP protocol message processing from a connected TCP peer. While an RDMA connection must be established first, this is part of the network protocol and does not require authentication credentials — any peer that can connect to the SIW port can trigger this.\nUI:N - No user interaction is required. The attacker triggers the bug by sending malformed network packets to an SIW-enabled service.\nS:U - The vulnerability crashes the kernel, which is within the same security authority. There is no crossing of a security boundary like VM escape.\nC:N - This is a pure NULL pointer dereference (access at offset 0xc0 from NULL). No information disclosure occurs — the kernel oopses/panics without leaking data.\nI:N - This is a NULL pointer dereference causing a crash. There is no memory corruption, no write primitive, and no code execution — the access address (0xc0) is not mappable on modern kernels.\nA:H - The NULL pointer dereference causes a kernel oops or panic, crashing the system. This is reliably triggerable by a remote attacker sending malformed iWARP packets."
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"url": "https://cert-portal.siemens.com/productcert/html/ssa-082556.html"
|
|
},
|
|
{
|
|
"url": "https://cert-portal.siemens.com/productcert/html/ssa-019113.html"
|
|
},
|
|
{
|
|
"url": "https://cert-portal.siemens.com/productcert/html/ssa-457936.html"
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"metrics": [
|
|
{
|
|
"other": {
|
|
"type": "ssvc",
|
|
"content": {
|
|
"id": "CVE-2026-23242",
|
|
"role": "CISA Coordinator",
|
|
"options": [
|
|
{
|
|
"Exploitation": "none"
|
|
},
|
|
{
|
|
"Automatable": "yes"
|
|
},
|
|
{
|
|
"Technical Impact": "partial"
|
|
}
|
|
],
|
|
"version": "2.0.3",
|
|
"timestamp": "2026-10-16T15:06:55.987966Z"
|
|
}
|
|
}
|
|
}
|
|
],
|
|
"problemTypes": [
|
|
{
|
|
"descriptions": [
|
|
{
|
|
"lang": "en",
|
|
"type": "CWE",
|
|
"cweId": "CWE-476",
|
|
"description": "CWE-476 NULL Pointer Dereference"
|
|
}
|
|
]
|
|
}
|
|
],
|
|
"title": "CISA ADP Vulnrichment",
|
|
"providerMetadata": {
|
|
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
|
|
"shortName": "CISA-ADP",
|
|
"dateUpdated": "2026-10-19T18:35:39.941Z"
|
|
}
|
|
}
|
|
]
|
|
}
|
|
} |