ghsa-pq93-v2j7-gw4w
Vulnerability from github
In the Linux kernel, the following vulnerability has been resolved:
RDMA/rxe: Fix responder length checking for UD request packets
According to the IBA specification: If a UD request packet is detected with an invalid length, the request shall be an invalid request and it shall be silently dropped by the responder. The responder then waits for a new request packet.
commit 689c5421bfe0 ("RDMA/rxe: Fix incorrect responder length checking")
defers responder length check for UD QPs in function copy_data.
But it introduces a regression issue for UD QPs.
When the packet size is too large to fit in the receive buffer.
copy_data will return error code -EINVAL. Then send_data_in
will return RESPST_ERR_MALFORMED_WQE. UD QP will transfer into
ERROR state.
{
"affected": [],
"aliases": [
"CVE-2024-40992"
],
"database_specific": {
"cwe_ids": [],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-07-12T13:15:20Z",
"severity": "MODERATE"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/rxe: Fix responder length checking for UD request packets\n\nAccording to the IBA specification:\nIf a UD request packet is detected with an invalid length, the request\nshall be an invalid request and it shall be silently dropped by\nthe responder. The responder then waits for a new request packet.\n\ncommit 689c5421bfe0 (\"RDMA/rxe: Fix incorrect responder length checking\")\ndefers responder length check for UD QPs in function `copy_data`.\nBut it introduces a regression issue for UD QPs.\n\nWhen the packet size is too large to fit in the receive buffer.\n`copy_data` will return error code -EINVAL. Then `send_data_in`\nwill return RESPST_ERR_MALFORMED_WQE. UD QP will transfer into\nERROR state.",
"id": "GHSA-pq93-v2j7-gw4w",
"modified": "2025-10-07T21:31:02Z",
"published": "2024-07-12T15:31:29Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-40992"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/163868ec1f6c610d16da9e458fe1dd7d5de97341"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/943c94f41dfe36536dc9aaa12c9efdf548ceb996"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/f67ac0061c7614c1548963d3ef1ee1606efd8636"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.