Riskcovery

CVE-2024-40992

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

State
Published
Severity
7.5 High
Published
Jul 12, 2024
Updated
Aug 5, 2026
Reserved
Jul 12, 2024

Read the record on cve.org

Description

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.

Scores

CVSSScoreVectorSource
3.17.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HLinux

Weaknesses

The record names no weakness.

Affected Products

ProductVersions
LinuxLinux
  • 689c5421bfe0eac65526bd97a466b9590a6aad3c to before 163868ec1f6c610d16da9e458fe1dd7d5de97341Affected
  • 689c5421bfe0eac65526bd97a466b9590a6aad3c to before 943c94f41dfe36536dc9aaa12c9efdf548ceb996Affected
  • 689c5421bfe0eac65526bd97a466b9590a6aad3c to before f67ac0061c7614c1548963d3ef1ee1606efd8636Affected
LinuxLinux
  • 6.2Affected
  • before 6.2Not affected
  • 6.6.36 through 6.6.*Not affected
  • 6.9.7 through 6.9.*Not affected
  • 6.10 and laterNot affected

References

Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.