Copyright © 2012 Red Hat, Inc. All rights reserved. Low 2024-07-12T00:00:00 kernel: RDMA/rxe: Fix responder length checking for UD request packets 4.4 CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H CWE-20

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.

Red Hat Enterprise Linux 6 Not affected kernel Red Hat Enterprise Linux 7 Out of support scope kernel Red Hat Enterprise Linux 7 Out of support scope kernel-rt Red Hat Enterprise Linux 8 Not affected kernel Red Hat Enterprise Linux 8 Not affected kernel-rt Red Hat Enterprise Linux 9 Fix deferred kernel Red Hat Enterprise Linux 9 Fix deferred kernel-rt https://www.cve.org/CVERecord?id=CVE-2024-40992 https://nvd.nist.gov/vuln/detail/CVE-2024-40992 https://lore.kernel.org/linux-cve-announce/2024071250-CVE-2024-40992-6554@gregkh/T