Bugzilla – Bug 1227826
VUL-0: CVE-2024-40992: kernel: RDMA/rxe: Fix responder length checking for UD request packets
Last modified: 2024-07-17 08:15:02 UTC
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. References: http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2024-40992 https://www.cve.org/CVERecord?id=CVE-2024-40992 https://git.kernel.org/stable/c/163868ec1f6c610d16da9e458fe1dd7d5de97341 https://git.kernel.org/stable/c/943c94f41dfe36536dc9aaa12c9efdf548ceb996 https://git.kernel.org/stable/c/f67ac0061c7614c1548963d3ef1ee1606efd8636 https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2024/CVE-2024-40992.mbox