{"id":"CVE-2026-92507","revision":"539f08f6602a4f2886f8a6f5bc9232cd","records":[{"revision":"539f08f6602a4f2886f8a6f5bc9232cd","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-92507","aliases":[],"title":"RDMA/core: Fix potential use after free in ib_dealloc_pd_user()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/core: Fix potential use after free in ib_dealloc_pd_user()\n\nWhen accessing a PD via the netlink path the only synchronization\nmechanism for the said PD is rdma_restrack_get().\nCurrently, rdma_restrack_del() is invoked at the end of\nib_dealloc_pd_user(), which is too late, since by that point\nvendor-specific resources associated with the PD might already be\nfreed. This can leave a short window where the PD remains accessible\nthrough restrack, leading to a potential use-after-free.\n\nFix this by moving the rdma_restrack_begin_del() call to the start of\nib_dealloc_pd_user(), ensuring that the PD is removed from restrack\nbefore its internal resources are released. This guarantees that no new\nusers hold references to a PD that is in the process of destruction.\n\nIn addition, this change preserves the intended inverted order\nbetween create and destroy routines: resources are added to\nrestrack at the end of successful creation, and hence shall be removed\nfrom the restrack first thing during the destruction flow, which keeps\nthe lifecycle management consistent and predictable.","state":0,"publishedAt":"2026-09-17T16:10:18.748+00:00","modifiedAt":"2026-10-19T09:04:13.346+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/verbs.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"91a7c58fce065506fd98954d27694e5d83c96638\",\n                            \"lessThan\": \"df0e9efe61ca706a07b1c9bf93fcb9032455efc4\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"91a7c58fce065506fd98954d27694e5d83c96638\",\n                            \"lessThan\": \"7647363fa02046da681acc3c827d9f301c06e0e7\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"91a7c58fce065506fd98954d27694e5d83c96638\",\n                            \"lessThan\": \"d9c0daf9362aad2aeed1d9c5536d108772a8d31c\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"91a7c58fce065506fd98954d27694e5d83c96638\",\n                            \"lessThan\": \"66d65f36d39759e9f62dc746dc71d862f20f827f\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"91a7c58fce065506fd98954d27694e5d83c96638\",\n                            \"lessThan\": \"c06f2856a1d7e75a5ff247fc05224aa2452e7265\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"91a7c58fce065506fd98954d27694e5d83c96638\",\n                            \"lessThan\": \"8b90e701342275f414e36e7421c502237df241ad\",\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/verbs.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"5.10\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"5.10\",\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/df0e9efe61ca706a07b1c9bf93fcb9032455efc4","https://git.kernel.org/stable/c/7647363fa02046da681acc3c827d9f301c06e0e7","https://git.kernel.org/stable/c/d9c0daf9362aad2aeed1d9c5536d108772a8d31c","https://git.kernel.org/stable/c/66d65f36d39759e9f62dc746dc71d862f20f827f","https://git.kernel.org/stable/c/c06f2856a1d7e75a5ff247fc05224aa2452e7265","https://git.kernel.org/stable/c/8b90e701342275f414e36e7421c502237df241ad"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-92507","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-92507","identifiers":["CVE-2026-92507"]},"retained":false,"historicalAffected":[]}],"coverage":[]}