{"id":"CVE-2026-74377","revision":"2b9c317c26b947e4bbf133939c6c94fc","records":[{"revision":"2b9c317c26b947e4bbf133939c6c94fc","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-74377","aliases":[],"title":"RDMA/rxe: Copy WQE to local buffer in non-SRQ receive path","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/rxe: Copy WQE to local buffer in non-SRQ receive path\n\nFor non-SRQ QPs, the responder reads WQE fields directly from the\nshared queue buffer mapped into userspace. This allows a malicious\nuser to modify fields like num_sge or sge entries while the kernel\nis processing the WQE, leading to out-of-bounds reads in\nrxe_resp_check_length() and copy_data().\n\nIntroduce get_recv_wqe() that validates num_sge and copies the WQE\nto a kernel-local buffer before processing, matching the approach\nalready used for SRQ WQEs in get_srq_wqe(). The srq_wqe buffer is\nreused since SRQ and non-SRQ paths are mutually exclusive per QP.","state":0,"publishedAt":"2026-08-15T05:58:55.704+00:00","modifiedAt":"2026-10-16T18:55:36.323+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/infiniband/sw/rxe/rxe_resp.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"8700e3e7c4857d28ebaa824509934556da0b3e76\",\n                            \"lessThan\": \"2e60378fb3c8b51c94103bb40014c4fe38fa5033\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"8700e3e7c4857d28ebaa824509934556da0b3e76\",\n                            \"lessThan\": \"fc72fd61cc8b2e2e3e92ae4c0e9cc30c9a7ecb78\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"8700e3e7c4857d28ebaa824509934556da0b3e76\",\n                            \"lessThan\": \"9fa785137303f7109c23dea779b8dedc67c9b531\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"8700e3e7c4857d28ebaa824509934556da0b3e76\",\n                            \"lessThan\": \"5420eebf3b3c162bfaf965f30e61cd1d689e5732\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"8700e3e7c4857d28ebaa824509934556da0b3e76\",\n                            \"lessThan\": \"a211b7904aed365e4e4f08a48ec6e6dd1ea7b16b\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"8700e3e7c4857d28ebaa824509934556da0b3e76\",\n                            \"lessThan\": \"d6ab440240a04b8737ee4c7bb21af9182e451733\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"affected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/infiniband/sw/rxe/rxe_resp.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"4.8\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"4.8\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.1.178\",\n                            \"lessThanOrEqual\": \"6.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.145\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.97\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.40\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.1.5\",\n                            \"lessThanOrEqual\": \"7.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","score":7.8,"severity":"HIGH"}],"references":["https://git.kernel.org/stable/c/2e60378fb3c8b51c94103bb40014c4fe38fa5033","https://git.kernel.org/stable/c/fc72fd61cc8b2e2e3e92ae4c0e9cc30c9a7ecb78","https://git.kernel.org/stable/c/9fa785137303f7109c23dea779b8dedc67c9b531","https://git.kernel.org/stable/c/5420eebf3b3c162bfaf965f30e61cd1d689e5732","https://git.kernel.org/stable/c/a211b7904aed365e4e4f08a48ec6e6dd1ea7b16b","https://git.kernel.org/stable/c/d6ab440240a04b8737ee4c7bb21af9182e451733"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-74377","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-74377","identifiers":["CVE-2026-74377"]},"retained":false,"historicalAffected":[]}],"coverage":[]}