{"id":"CVE-2026-45852","summary":"RDMA/rxe: Fix double free in rxe_srq_from_init","details":"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-\u003erq.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-\u003erq.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-\u003erq.queue = q' after copy_to_user.","modified":"2026-07-09T03:51:33.520582050Z","published":"2026-05-27T12:15:26.084Z","related":["ALSA-2026:25120","ALSA-2026:25121","ALSA-2026:25217","SUSE-SU-2026:22099-1","SUSE-SU-2026:22108-1","SUSE-SU-2026:22112-1","SUSE-SU-2026:22127-1","SUSE-SU-2026:22137-1","SUSE-SU-2026:22433-1","SUSE-SU-2026:22458-1","SUSE-SU-2026:2310-1","SUSE-SU-2026:2331-1","SUSE-SU-2026:2332-1","SUSE-SU-2026:2383-1","SUSE-SU-2026:2421-1","SUSE-SU-2026:2450-1","SUSE-SU-2026:2482-1","SUSE-SU-2026:2591-1","openSUSE-SU-2026:20965-1"],"database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/45xxx/CVE-2026-45852.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/0beefd0e15d962f497aad750b2d5e9c3570b66d1"},{"type":"WEB","url":"https://git.kernel.org/stable/c/26793db60925df1e88a29466813d586cbc190b8c"},{"type":"WEB","url":"https://git.kernel.org/stable/c/26a9cfe12f4ffdeaa136f252478986fa5f397ddc"},{"type":"WEB","url":"https://git.kernel.org/stable/c/5c07aef09a121a4cd622a71eb0753a9e135c84a8"},{"type":"WEB","url":"https://git.kernel.org/stable/c/9abff51163aa1bc275ec356f74fe976291860a7f"},{"type":"WEB","url":"https://git.kernel.org/stable/c/b98ab5494dbd48652561aa0b9c32f10500220745"},{"type":"WEB","url":"https://git.kernel.org/stable/c/ce6f8e007682f378279d4cf83b240f12d52c723b"},{"type":"WEB","url":"https://git.kernel.org/stable/c/d493e0bfc748a520c349d6c8791b262aa5ad2e4e"},{"type":"WEB","url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-45852.json"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:25120"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:25121"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:25217"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:27713"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:33899"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:34094"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:35844"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:35863"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:35896"},{"type":"ADVISORY","url":"https://access.redhat.com/security/cve/CVE-2026-45852"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/45xxx/CVE-2026-45852.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-45852"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2482166"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"aae0484e15f062ad2c2502e68e15dfb8b8f84608"},{"fixed":"b98ab5494dbd48652561aa0b9c32f10500220745"},{"fixed":"d493e0bfc748a520c349d6c8791b262aa5ad2e4e"},{"fixed":"9abff51163aa1bc275ec356f74fe976291860a7f"},{"fixed":"26793db60925df1e88a29466813d586cbc190b8c"},{"fixed":"ce6f8e007682f378279d4cf83b240f12d52c723b"},{"fixed":"5c07aef09a121a4cd622a71eb0753a9e135c84a8"},{"fixed":"26a9cfe12f4ffdeaa136f252478986fa5f397ddc"},{"fixed":"0beefd0e15d962f497aad750b2d5e9c3570b66d1"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"0"},{"last_affected":"350703fae672d4d649c3562c199eab5ec9dc7c79"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"4.19.86"},{"fixed":"4.20"}]}],"versions":["v4.19.85","v4.19.84","v4.19.83","v4.19.82","v4.19.81","v4.19.80","v4.19.79","v4.19.78","v4.19.77","v4.19.76","v4.19.75","v4.19.74","v4.19.73","v4.19.72","v4.19.71","v4.19.70","v4.19.69","v4.19.68","v4.19.67","v4.19.66","v4.19.65","v4.19.64","v4.19.63","v4.19.62","v4.19.61","v4.19.60","v4.19.59","v4.19.58","v4.19.57","v4.19.56","v4.19.55","v4.19.54","v4.19.53","v4.19.52","v4.19.51","v4.19.50","v4.19.49","v4.19.48","v4.19.47","v4.19.46","v4.19.45","v4.19.44","v4.19.43","v4.19.42","v4.19.41","v4.19.40","v4.19.39","v4.19.38","v4.19.37","v4.19.36","v4.19.35","v4.19.34","v4.19.33","v4.19.32","v4.19.31","v4.19.30","v4.19.29","v4.19.28","v4.19.27","v4.19.26","v4.19.25","v4.19.24","v4.19.23","v4.19.22","v4.19.21","v4.19.20","v4.19.19","v4.19.18","v4.19.17","v4.19.16","v4.19","v4.19.15","v4.19.14","v4.19.13","v4.19.12","v4.19.11","v4.19.10","v4.19.9","v4.19.8","v4.19.7","v4.19.6","v4.19.5","v4.19.4","v4.19.3","v4.19.2","v4.19.1","v4.19-rc2","v4.19-rc8","v4.19-rc4","v4.19-rc1","v4.19-rc7","v4.19-rc6","v4.19-rc5","v4.19-rc3","v4.18","v4.18-rc1","v4.18-rc8","v4.18-rc2","v4.18-rc5","v4.18-rc6","v4.18-rc7","v4.17","v4.18-rc3","v4.18-rc4","v4.17-rc1","v4.17-rc2","v4.17-rc7","v4.17-rc3","v4.17-rc4","v4.16","v4.17-rc6","v4.17-rc5","v4.16-rc7","v4.16-rc4","v4.16-rc1","v4.16-rc2","v4.16-rc5","v4.16-rc3","v4.16-rc6","v4.14","v4.15","v4.15-rc1","v4.15-rc4","v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