In the Linux kernel, the following vulnerability has been resolved: RDMA/rtrs-srv: Fix integer underflow in process_read and process_write usr_len is read from a network-supplied message field (le16_to_cpu) and used to compute data_len = off - usr_len without validating that usr_len <= off. A malicious RDMA client can send usr_len > off causing an integer underflow, resulting in data_len wrapping to a huge size_t value which is then passed to the rdma_ev callback as a memory length, leading to out-of-bounds memory access. Fix by reading and validating usr_len <= off before rtrs_srv_get_ops_ids() in both process_read() and process_write(), ensuring the early return path acquires no reference and has no resource leak.
zetlyn/cve-nvd vulnerability cve CVE-2026-97413 known 2026-09-24
https://nvd.nist.gov/vuln/detail/CVE-2026-97413
Properties
| cvss | 9.8receipt
What the source handed over{
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{
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}
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{
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/rtrs-srv: Fix integer underflow in process_read and process_write\n\nusr_len is read from a network-supplied message field (le16_to_cpu)\nand used to compute data_len = off - usr_len without validating that\nusr_len <= off. A malicious RDMA client can send usr_len > off causing\nan integer underflow, resulting in data_len wrapping to a huge size_t\nvalue which is then passed to the rdma_ev callback as a memory length,\nleading to out-of-bounds memory access.\n\nFix by reading and validating usr_len <= off before rtrs_srv_get_ops_ids()\nin both process_read() and process_write(), ensuring the early return\npath acquires no reference and has no resource leak."
}
],
"id": "CVE-2026-97413",
"lastModified": "2026-09-25T13:17:24.830",
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"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
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},
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}
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"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"vulnStatus": "Received"
}
} | ||||
|---|---|---|---|---|---|
| product | Linuxreceipt
What the source handed over{
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"descriptions": [
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/rtrs-srv: Fix integer underflow in process_read and process_write\n\nusr_len is read from a network-supplied message field (le16_to_cpu)\nand used to compute data_len = off - usr_len without validating that\nusr_len <= off. A malicious RDMA client can send usr_len > off causing\nan integer underflow, resulting in data_len wrapping to a huge size_t\nvalue which is then passed to the rdma_ev callback as a memory length,\nleading to out-of-bounds memory access.\n\nFix by reading and validating usr_len <= off before rtrs_srv_get_ops_ids()\nin both process_read() and process_write(), ensuring the early return\npath acquires no reference and has no resource leak."
}
],
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}
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"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"vulnStatus": "Received"
}
} | ||||
| status | Receivedreceipt
What the source handed over{
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{
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/rtrs-srv: Fix integer underflow in process_read and process_write\n\nusr_len is read from a network-supplied message field (le16_to_cpu)\nand used to compute data_len = off - usr_len without validating that\nusr_len <= off. A malicious RDMA client can send usr_len > off causing\nan integer underflow, resulting in data_len wrapping to a huge size_t\nvalue which is then passed to the rdma_ev callback as a memory length,\nleading to out-of-bounds memory access.\n\nFix by reading and validating usr_len <= off before rtrs_srv_get_ops_ids()\nin both process_read() and process_write(), ensuring the early return\npath acquires no reference and has no resource leak."
}
],
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],
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"vulnStatus": "Received"
}
} | ||||
| vendor | Linuxreceipt
What the source handed over{
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/rtrs-srv: Fix integer underflow in process_read and process_write\n\nusr_len is read from a network-supplied message field (le16_to_cpu)\nand used to compute data_len = off - usr_len without validating that\nusr_len <= off. A malicious RDMA client can send usr_len > off causing\nan integer underflow, resulting in data_len wrapping to a huge size_t\nvalue which is then passed to the rdma_ev callback as a memory length,\nleading to out-of-bounds memory access.\n\nFix by reading and validating usr_len <= off before rtrs_srv_get_ops_ids()\nin both process_read() and process_write(), ensuring the early return\npath acquires no reference and has no resource leak."
}
],
"id": "CVE-2026-97413",
"lastModified": "2026-09-25T13:17:24.830",
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}
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"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"vulnStatus": "Received"
}
} |
Text
In the Linux kernel, the following vulnerability has been resolved:
RDMA/rtrs-srv: Fix integer underflow in process_read and process_write
usr_len is read from a network-supplied message field (le16_to_cpu)
and used to compute data_len = off - usr_len without validating that
usr_len <= off. A malicious RDMA client can send usr_len > off causing
an integer underflow, resulting in data_len wrapping to a huge size_t
value which is then passed to the rdma_ev callback as a memory length,
leading to out-of-bounds memory access.
Fix by reading and validating usr_len <= off before rtrs_srv_get_ops_ids()
in both process_read() and process_write(), ensuring the early return
path acquires no reference and has no resource leak.