{"id":"CVE-2026-90309","revision":"2c4e0e54998f4508aae8ae85a7c9f105","records":[{"revision":"2c4e0e54998f4508aae8ae85a7c9f105","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-90309","aliases":[],"title":"RDMA/erdma: Hold CQ references when processing EQ events","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/erdma: Hold CQ references when processing EQ events\n\nEQ handlers look up CQs from dev->cq_xa and invoke CQ completion or\nerror callbacks outside the xarray lock. erdma_destroy_cq() can erase the\nCQ from the xarray and free its queue buffer and doorbell record while a\npreviously scheduled EQ handler is still using the CQ.\n\nAdd a CQ refcount and take a reference under the xarray lock with\nrefcount_inc_not_zero(). Remove the CQ from the xarray before dropping\nthe destroy-path reference, then wait for in-flight EQ users before\nreleasing CQ resources.","state":0,"publishedAt":"2026-09-17T16:08:30.346+00:00","modifiedAt":"2026-10-19T09:01:26.909+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/hw/erdma/erdma_eq.c\",\n                        \"drivers/infiniband/hw/erdma/erdma_verbs.c\",\n                        \"drivers/infiniband/hw/erdma/erdma_verbs.h\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"155055771704f8cbb5c176a4309b7dc30a50450c\",\n                            \"lessThan\": \"610ef81797bb4f709e8675c1d8d093bb9ccdcbd8\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"155055771704f8cbb5c176a4309b7dc30a50450c\",\n                            \"lessThan\": \"c0a83f29a24c7e7f8516630848ef6db4c174deed\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"155055771704f8cbb5c176a4309b7dc30a50450c\",\n                            \"lessThan\": \"05b8ca493dd02319bca93c640b259c2ba51ef321\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"155055771704f8cbb5c176a4309b7dc30a50450c\",\n                            \"lessThan\": \"1fc9c1933959d2776a1ce7bf424251b8b5b586cd\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"155055771704f8cbb5c176a4309b7dc30a50450c\",\n                            \"lessThan\": \"4545f355654d044d35a31cd01cc46f491a8a7c36\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"155055771704f8cbb5c176a4309b7dc30a50450c\",\n                            \"lessThan\": \"98df2aee1459ee1c62c70cbe9b370d2a532aea36\",\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/hw/erdma/erdma_eq.c\",\n                        \"drivers/infiniband/hw/erdma/erdma_verbs.c\",\n                        \"drivers/infiniband/hw/erdma/erdma_verbs.h\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"6.0\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"6.0\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.1.188\",\n                            \"lessThanOrEqual\": \"6.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.157\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.110\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.52\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2.6\",\n                            \"lessThanOrEqual\": \"7.2.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.3\",\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/610ef81797bb4f709e8675c1d8d093bb9ccdcbd8","https://git.kernel.org/stable/c/c0a83f29a24c7e7f8516630848ef6db4c174deed","https://git.kernel.org/stable/c/05b8ca493dd02319bca93c640b259c2ba51ef321","https://git.kernel.org/stable/c/1fc9c1933959d2776a1ce7bf424251b8b5b586cd","https://git.kernel.org/stable/c/4545f355654d044d35a31cd01cc46f491a8a7c36","https://git.kernel.org/stable/c/98df2aee1459ee1c62c70cbe9b370d2a532aea36"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-90309","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-90309","identifiers":["CVE-2026-90309"]},"retained":false,"historicalAffected":[]}],"coverage":[]}