{"id":"CVE-2024-36476","summary":"RDMA/rtrs: Ensure 'ib_sge list' is accessible","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/rtrs: Ensure 'ib_sge list' is accessible\n\nMove the declaration of the 'ib_sge list' variable outside the\n'always_invalidate' block to ensure it remains accessible for use\nthroughout the function.\n\nPreviously, 'ib_sge list' was declared within the 'always_invalidate'\nblock, limiting its accessibility, then caused a\n'BUG: kernel NULL pointer dereference'[1].\n ? __die_body.cold+0x19/0x27\n ? page_fault_oops+0x15a/0x2d0\n ? search_module_extables+0x19/0x60\n ? search_bpf_extables+0x5f/0x80\n ? exc_page_fault+0x7e/0x180\n ? asm_exc_page_fault+0x26/0x30\n ? memcpy_orig+0xd5/0x140\n rxe_mr_copy+0x1c3/0x200 [rdma_rxe]\n ? rxe_pool_get_index+0x4b/0x80 [rdma_rxe]\n copy_data+0xa5/0x230 [rdma_rxe]\n rxe_requester+0xd9b/0xf70 [rdma_rxe]\n ? finish_task_switch.isra.0+0x99/0x2e0\n rxe_sender+0x13/0x40 [rdma_rxe]\n do_task+0x68/0x1e0 [rdma_rxe]\n process_one_work+0x177/0x330\n worker_thread+0x252/0x390\n ? __pfx_worker_thread+0x10/0x10\n\nThis change ensures the variable is available for subsequent operations\nthat require it.\n\n[1] https://lore.kernel.org/linux-rdma/6a1f3e8f-deb0-49f9-bc69-a9b03ecfcda7@fujitsu.com/","modified":"2026-04-02T12:10:03.752878Z","published":"2025-01-15T13:10:20.507Z","related":["MGASA-2025-0030","MGASA-2025-0032","SUSE-SU-2025:0289-1","SUSE-SU-2025:0428-1","SUSE-SU-2025:0499-1","SUSE-SU-2025:0557-1","SUSE-SU-2025:20165-1","SUSE-SU-2025:20166-1","SUSE-SU-2025:20248-1","SUSE-SU-2025:20249-1","USN-7379-2","USN-7380-1"],"database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/36xxx/CVE-2024-36476.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/143378075904e78b3b2a810099bcc3b3d82d762f"},{"type":"WEB","url":"https://git.kernel.org/stable/c/32e1e748a85bd52b20b3857d80fd166d22fa455a"},{"type":"WEB","url":"https://git.kernel.org/stable/c/6ffb5c1885195ae5211a12b4acd2d51843ca41b0"},{"type":"WEB","url":"https://git.kernel.org/stable/c/7eaa71f56a6f7ab87957213472dc6d4055862722"},{"type":"WEB","url":"https://git.kernel.org/stable/c/b238f61cc394d5fef27b26d7d9aa383ebfddabb0"},{"type":"WEB","url":"https://git.kernel.org/stable/c/fb514b31395946022f13a08e06a435f53cf9e8b3"},{"type":"WEB","url":"https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html"},{"type":"WEB","url":"https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/36xxx/CVE-2024-36476.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2024-36476"},{"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":"9cb837480424e78ed585376f944088246685aec3"},{"fixed":"7eaa71f56a6f7ab87957213472dc6d4055862722"},{"fixed":"143378075904e78b3b2a810099bcc3b3d82d762f"},{"fixed":"32e1e748a85bd52b20b3857d80fd166d22fa455a"},{"fixed":"b238f61cc394d5fef27b26d7d9aa383ebfddabb0"},{"fixed":"6ffb5c1885195ae5211a12b4acd2d51843ca41b0"},{"fixed":"fb514b31395946022f13a08e06a435f53cf9e8b3"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-36476.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"}]}