{"id":"CVE-2026-68425","revision":"282ce9f918194e86a257c6d8c1b6d865","records":[{"revision":"282ce9f918194e86a257c6d8c1b6d865","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-68425","aliases":[],"title":"IB/mad: Drop unmatched RMPP responses before reassembly","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nIB/mad: Drop unmatched RMPP responses before reassembly\n\nKernel-handled RMPP receive processing starts reassembly for active\nDATA responses before the response is matched to an outstanding send.\nThe normal match happens later, after ib_process_rmpp_recv_wc() has\neither assembled a complete message or consumed the segment.\n\nThat ordering lets an unsolicited response that routes to a kernel\nRMPP agent by the high TID bits allocate or extend RMPP receive state\nbefore the full TID and source address are checked against a real\nrequest. A reordered burst can therefore reach the receive-side\ninsertion path even though the response would not match any send.\n\nFor kernel-handled RMPP DATA responses, require the existing\nib_find_send_mad() match before entering RMPP reassembly. The matcher\nalready checks the full TID, management class and source address/GID\nagainst the agent wait, backlog and in-flight send lists. If there is\nno match, drop the response without creating RMPP state.\n\nThis leaves the RMPP window behavior unchanged and only rejects\nresponses that have no corresponding request.","state":0,"publishedAt":"2026-08-10T12:04:45.947+00:00","modifiedAt":"2026-10-19T21:09:09.668+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/core/mad.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"fa619a77046bef30478697aba0553991033afb8e\",\n                            \"lessThan\": \"45416c87ebcece1e90f3bc5bc172d106b77c6b69\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"fa619a77046bef30478697aba0553991033afb8e\",\n                            \"lessThan\": \"9634fb1f4d404f36a20ffbcb8797369db69b06bb\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"fa619a77046bef30478697aba0553991033afb8e\",\n                            \"lessThan\": \"bfb9e8243fd2099d1080d09222964d988f991d9b\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"fa619a77046bef30478697aba0553991033afb8e\",\n                            \"lessThan\": \"dfa535c94406c03d3f0c869ef3ba5528e395737c\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"fa619a77046bef30478697aba0553991033afb8e\",\n                            \"lessThan\": \"6e1bd7f590b0ccfee07f7fe1d48b92059bd37d72\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"fa619a77046bef30478697aba0553991033afb8e\",\n                            \"lessThan\": \"98d2d468b4faa1fdc68c0c6c238389906ee3490c\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"fa619a77046bef30478697aba0553991033afb8e\",\n                            \"lessThan\": \"ad9c9ad3204f63a46f0f7de29687a8e512f05e29\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"fa619a77046bef30478697aba0553991033afb8e\",\n                            \"lessThan\": \"d2e52d610b9b09694261632340b801a421e0b0c5\",\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/core/mad.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"2.6.13\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"2.6.13\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.10.265\",\n                            \"lessThanOrEqual\": \"5.10.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.15.216\",\n                            \"lessThanOrEqual\": \"5.15.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.1.183\",\n                            \"lessThanOrEqual\": \"6.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.148\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.101\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.42\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.1.6\",\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:A/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H","score":7.1,"severity":"HIGH"}],"references":["https://git.kernel.org/stable/c/45416c87ebcece1e90f3bc5bc172d106b77c6b69","https://git.kernel.org/stable/c/9634fb1f4d404f36a20ffbcb8797369db69b06bb","https://git.kernel.org/stable/c/bfb9e8243fd2099d1080d09222964d988f991d9b","https://git.kernel.org/stable/c/dfa535c94406c03d3f0c869ef3ba5528e395737c","https://git.kernel.org/stable/c/6e1bd7f590b0ccfee07f7fe1d48b92059bd37d72","https://git.kernel.org/stable/c/98d2d468b4faa1fdc68c0c6c238389906ee3490c","https://git.kernel.org/stable/c/ad9c9ad3204f63a46f0f7de29687a8e512f05e29","https://git.kernel.org/stable/c/d2e52d610b9b09694261632340b801a421e0b0c5"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-68425","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-68425","identifiers":["CVE-2026-68425"]},"retained":false,"historicalAffected":[]}],"coverage":[]}