{"id":"CVE-2026-92509","revision":"16b7c49f4d93453f8483b0113bcf93c2","records":[{"revision":"16b7c49f4d93453f8483b0113bcf93c2","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-92509","aliases":[],"title":"RDMA/core: Fix potential use after free in counter_release()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/core: Fix potential use after free in counter_release()\n\nWhen accessing a counter via the netlink path the only synchronization\nmechanism for the said counter is rdma_restrack_get().\nCurrently, rdma_restrack_del() is invoked at the end of\ncounter_release(), which is too late, since by that point\nvendor-specific resources associated with the counter might already be\nfreed. This can leave a short window where the counter remains\naccessible through restrack, leading to a potential use-after-free.\n\nFix this by moving the rdma_restrack_del() call to be before the\nfreeing of the vendor-specific resources, ensuring that the counter is\nremoved from restrack before its internal resources are released.\nThis guarantees that no new users hold references to a counter that is\nin the process of destruction.","state":0,"publishedAt":"2026-09-17T16:10:20.1+00:00","modifiedAt":"2026-10-19T09:04:15.303+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/counters.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"99fa331dc8629be55ac7a0cca0dc56492070ddac\",\n                            \"lessThan\": \"5eb0c57a8b568eb08f464861d84d518a2af939ac\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"99fa331dc8629be55ac7a0cca0dc56492070ddac\",\n                            \"lessThan\": \"d5cc211e8c39e46f357d30a092d683e84d560de9\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"99fa331dc8629be55ac7a0cca0dc56492070ddac\",\n                            \"lessThan\": \"2f0c6705e26ba92c0c6b0b0908a2d3f35a039d5b\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"99fa331dc8629be55ac7a0cca0dc56492070ddac\",\n                            \"lessThan\": \"8c013e3a8d8273da4d47bf1c27f016a3551996f5\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"99fa331dc8629be55ac7a0cca0dc56492070ddac\",\n                            \"lessThan\": \"64c72390d8407ea86de712a477c796b07d37abc4\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"99fa331dc8629be55ac7a0cca0dc56492070ddac\",\n                            \"lessThan\": \"235ef2d0e750885c29340b0fc40620a7a4f52e12\",\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/counters.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"5.3\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"5.3\",\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":[],"references":["https://git.kernel.org/stable/c/5eb0c57a8b568eb08f464861d84d518a2af939ac","https://git.kernel.org/stable/c/d5cc211e8c39e46f357d30a092d683e84d560de9","https://git.kernel.org/stable/c/2f0c6705e26ba92c0c6b0b0908a2d3f35a039d5b","https://git.kernel.org/stable/c/8c013e3a8d8273da4d47bf1c27f016a3551996f5","https://git.kernel.org/stable/c/64c72390d8407ea86de712a477c796b07d37abc4","https://git.kernel.org/stable/c/235ef2d0e750885c29340b0fc40620a7a4f52e12"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-92509","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-92509","identifiers":["CVE-2026-92509"]},"retained":false,"historicalAffected":[]}],"coverage":[]}