{"id":"CVE-2026-45852","revision":"bc19f93a83f741889160354be2179f6d","records":[{"revision":"bc19f93a83f741889160354be2179f6d","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-45852","aliases":[],"title":"RDMA/rxe: Fix double free in rxe_srq_from_init","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/rxe: Fix double free in rxe_srq_from_init\n\nIn rxe_srq_from_init(), the queue pointer 'q' is assigned to\n'srq->rq.queue' before copying the SRQ number to user space.\nIf copy_to_user() fails, the function calls rxe_queue_cleanup()\nto free the queue, but leaves the now-invalid pointer in\n'srq->rq.queue'.\n\nThe caller of rxe_srq_from_init() (rxe_create_srq) eventually\ncalls rxe_srq_cleanup() upon receiving the error, which triggers\na second rxe_queue_cleanup() on the same memory, leading to a\ndouble free.\n\nThe call trace looks like this:\n   kmem_cache_free+0x.../0x...\n   rxe_queue_cleanup+0x1a/0x30 [rdma_rxe]\n   rxe_srq_cleanup+0x42/0x60 [rdma_rxe]\n   rxe_elem_release+0x31/0x70 [rdma_rxe]\n   rxe_create_srq+0x12b/0x1a0 [rdma_rxe]\n   ib_create_srq_user+0x9a/0x150 [ib_core]\n\nFix this by moving 'srq->rq.queue = q' after copy_to_user.","state":0,"publishedAt":"2026-05-27T12:15:26.084+00:00","modifiedAt":"2026-10-19T19:26:38.312+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/sw/rxe/rxe_srq.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"aae0484e15f062ad2c2502e68e15dfb8b8f84608\",\n                            \"lessThan\": \"b98ab5494dbd48652561aa0b9c32f10500220745\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"aae0484e15f062ad2c2502e68e15dfb8b8f84608\",\n                            \"lessThan\": \"d493e0bfc748a520c349d6c8791b262aa5ad2e4e\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"aae0484e15f062ad2c2502e68e15dfb8b8f84608\",\n                            \"lessThan\": \"9abff51163aa1bc275ec356f74fe976291860a7f\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"aae0484e15f062ad2c2502e68e15dfb8b8f84608\",\n                            \"lessThan\": \"26793db60925df1e88a29466813d586cbc190b8c\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"aae0484e15f062ad2c2502e68e15dfb8b8f84608\",\n                            \"lessThan\": \"ce6f8e007682f378279d4cf83b240f12d52c723b\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"aae0484e15f062ad2c2502e68e15dfb8b8f84608\",\n                            \"lessThan\": \"5c07aef09a121a4cd622a71eb0753a9e135c84a8\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"aae0484e15f062ad2c2502e68e15dfb8b8f84608\",\n                            \"lessThan\": \"26a9cfe12f4ffdeaa136f252478986fa5f397ddc\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"aae0484e15f062ad2c2502e68e15dfb8b8f84608\",\n                            \"lessThan\": \"0beefd0e15d962f497aad750b2d5e9c3570b66d1\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"350703fae672d4d649c3562c199eab5ec9dc7c79\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"4.19.86\",\n                            \"lessThan\": \"4.20\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\"\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/sw/rxe/rxe_srq.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"4.20\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"4.20\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.10.259\",\n                            \"lessThanOrEqual\": \"5.10.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.15.210\",\n                            \"lessThanOrEqual\": \"5.15.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.1.176\",\n                            \"lessThanOrEqual\": \"6.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.128\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.75\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.14\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.19.4\",\n                            \"lessThanOrEqual\": \"6.19.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.0\",\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/b98ab5494dbd48652561aa0b9c32f10500220745","https://git.kernel.org/stable/c/d493e0bfc748a520c349d6c8791b262aa5ad2e4e","https://git.kernel.org/stable/c/9abff51163aa1bc275ec356f74fe976291860a7f","https://git.kernel.org/stable/c/26793db60925df1e88a29466813d586cbc190b8c","https://git.kernel.org/stable/c/ce6f8e007682f378279d4cf83b240f12d52c723b","https://git.kernel.org/stable/c/5c07aef09a121a4cd622a71eb0753a9e135c84a8","https://git.kernel.org/stable/c/26a9cfe12f4ffdeaa136f252478986fa5f397ddc","https://git.kernel.org/stable/c/0beefd0e15d962f497aad750b2d5e9c3570b66d1"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-45852","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-45852","identifiers":["CVE-2026-45852"]},"retained":false,"historicalAffected":[]}],"coverage":[]}