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GHSA-PQ93-V2J7-GW4W

Vulnerability from github – Published: 2024-07-12 15:31 – Updated: 2025-10-07 21:31

Details

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.

Severity

5.5 (Medium)


                  
                    CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

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{
  "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",
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CVE-2024-40992 (GCVE-0-2024-40992)

Vulnerability from cvelistv5 – Published: 2024-07-12 12:37 – Updated: 2026-08-05 11:34

Title

RDMA/rxe: Fix responder length checking for UD request packets

Summary

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.

Severity

7.5 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2024-09-10 17:01 UTC

Assigner

Linux CNA under the mitre root

CNA scorecard D 53/100 over 7033 records in the last 180 days details

References

3 references

URL	Tags
https://git.kernel.org/stable/c/163868ec1f6c610d1…
https://git.kernel.org/stable/c/943c94f41dfe36536…
https://git.kernel.org/stable/c/f67ac0061c7614c15…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 689c5421bfe0eac65526bd97a466b9590a6aad3c , < 163868ec1f6c610d16da9e458fe1dd7d5de97341 (git) Affected: 689c5421bfe0eac65526bd97a466b9590a6aad3c , < 943c94f41dfe36536dc9aaa12c9efdf548ceb996 (git) Affected: 689c5421bfe0eac65526bd97a466b9590a6aad3c , < f67ac0061c7614c1548963d3ef1ee1606efd8636 (git)
Linux	Linux	Affected: 6.2 Unaffected: 0 , < 6.2 (semver) Unaffected: 6.6.36 , ≤ 6.6.* (semver) Unaffected: 6.9.7 , ≤ 6.9.* (semver) Unaffected: 6.10 , ≤ * (original_commit_for_fix)

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Sightings

Author	Source	Type	Date	Other

Nomenclature

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Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
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Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

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