{"id":"CVE-2026-92510","revision":"c8907ce05a3c4dbca0b5bf15c70bce31","records":[{"revision":"c8907ce05a3c4dbca0b5bf15c70bce31","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-92510","aliases":[],"title":"RDMA/core: Fix potential use after free in ib_destroy_srq_user()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/core: Fix potential use after free in ib_destroy_srq_user()\n\nWhen accessing a SRQ via the netlink path the only synchronization\nmechanism for the said SRQ is rdma_restrack_get().\nCurrently, rdma_restrack_del() is invoked at the end of\nib_destroy_srq_user(), which is too late, since by that point\nvendor-specific resources associated with the SRQ might already be\nfreed. This can leave a short window where the SRQ 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_destroy_srq_user(), ensuring that the SRQ is removed from restrack\nbefore its internal resources are released. This guarantees that no new\nusers hold references to a SRQ 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":"2026-09-17T16:10:20.775+00:00","modifiedAt":"2026-10-19T09:04:16.292+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\": \"48f8a70e899fa4d9c8f00369f482f0382173ece9\",\n                            \"lessThan\": \"a5bfd9fe05d5cebbd3e447bf7f7b2c663007d8b9\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"48f8a70e899fa4d9c8f00369f482f0382173ece9\",\n                            \"lessThan\": \"d3d0eabe6e39b024deb3e085e2d408d037e967c3\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"48f8a70e899fa4d9c8f00369f482f0382173ece9\",\n                            \"lessThan\": \"9c704383529044c02122f85a2a9a42cbf14a07a6\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"48f8a70e899fa4d9c8f00369f482f0382173ece9\",\n                            \"lessThan\": \"bedd7dee72588c838f5b67197ea8b387e7beb918\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"48f8a70e899fa4d9c8f00369f482f0382173ece9\",\n                            \"lessThan\": \"95c992c869df54a6a7061f5f3fb6400244f2af8f\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"48f8a70e899fa4d9c8f00369f482f0382173ece9\",\n                            \"lessThan\": \"88244ecc71cc0b3ed200f5ef7ddea6686adfd730\",\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\": \"5.13\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"5.13\",\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/a5bfd9fe05d5cebbd3e447bf7f7b2c663007d8b9","https://git.kernel.org/stable/c/d3d0eabe6e39b024deb3e085e2d408d037e967c3","https://git.kernel.org/stable/c/9c704383529044c02122f85a2a9a42cbf14a07a6","https://git.kernel.org/stable/c/bedd7dee72588c838f5b67197ea8b387e7beb918","https://git.kernel.org/stable/c/95c992c869df54a6a7061f5f3fb6400244f2af8f","https://git.kernel.org/stable/c/88244ecc71cc0b3ed200f5ef7ddea6686adfd730"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-92510","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-92510","identifiers":["CVE-2026-92510"]},"retained":false,"historicalAffected":[]}],"coverage":[]}