{"id":"AZL-56346","summary":"CVE-2024-53215 affecting package kernel for versions less than 5.15.176.3-1","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nsvcrdma: fix miss destroy percpu_counter in svc_rdma_proc_init()\n\nThere's issue as follows:\nRPC: Registered rdma transport module.\nRPC: Registered rdma backchannel transport module.\nRPC: Unregistered rdma transport module.\nRPC: Unregistered rdma backchannel transport module.\nBUG: unable to handle page fault for address: fffffbfff80c609a\nPGD 123fee067 P4D 123fee067 PUD 123fea067 PMD 10c624067 PTE 0\nOops: Oops: 0000 [#1] PREEMPT SMP KASAN NOPTI\nRIP: 0010:percpu_counter_destroy_many+0xf7/0x2a0\nCall Trace:\n \u003cTASK\u003e\n __die+0x1f/0x70\n page_fault_oops+0x2cd/0x860\n spurious_kernel_fault+0x36/0x450\n do_kern_addr_fault+0xca/0x100\n exc_page_fault+0x128/0x150\n asm_exc_page_fault+0x26/0x30\n percpu_counter_destroy_many+0xf7/0x2a0\n mmdrop+0x209/0x350\n finish_task_switch.isra.0+0x481/0x840\n schedule_tail+0xe/0xd0\n ret_from_fork+0x23/0x80\n ret_from_fork_asm+0x1a/0x30\n \u003c/TASK\u003e\n\nIf register_sysctl() return NULL, then svc_rdma_proc_cleanup() will not\ndestroy the percpu counters which init in svc_rdma_proc_init().\nIf CONFIG_HOTPLUG_CPU is enabled, residual nodes may be in the\n'percpu_counters' list. The above issue may occur once the module is\nremoved. If the CONFIG_HOTPLUG_CPU configuration is not enabled, memory\nleakage occurs.\nTo solve above issue just destroy all percpu counters when\nregister_sysctl() return NULL.","modified":"2026-04-01T05:18:52.172576Z","published":"2024-12-27T14:15:29Z","upstream":["CVE-2024-53215"],"references":[{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2024-53215"}],"affected":[{"package":{"name":"kernel","ecosystem":"Azure Linux:2","purl":"pkg:rpm/azure-linux/kernel"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.15.176.3-1"}]}],"database_specific":{"source":"https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-56346.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"}]}