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CVE-2024-40992

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

Description (CNA)

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 (CNA)

Vendor / productVersions
Linux / Linuxaffected 689c5421bfe0eac65526bd97a466b9590a6aad3c before 163868ec1f6c610d16da9e458fe1dd7d5de97341; affected 689c5421bfe0eac65526bd97a466b9590a6aad3c before 943c94f41dfe36536dc9aaa12c9efdf548ceb996; affected 689c5421bfe0eac65526bd97a466b9590a6aad3c before f67ac0061c7614c1548963d3ef1ee1606efd8636
Linux / Linuxaffected 6.2; unaffected 0 before 6.2; unaffected 6.6.36 through 6.6.*; unaffected 6.9.7 through 6.9.*; unaffected 6.10 through *

CWE

No CWE identifiers supplied.

References

ADP enrichment

CVE

No English description supplied.

CISA-ADP

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No references supplied.