CVE-2024-53175

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> ipc: fix memleak if msg_init_ns failed in create_ipc_ns<br /> <br /> Percpu memory allocation may failed during create_ipc_ns however this<br /> fail is not handled properly since ipc sysctls and mq sysctls is not<br /> released properly. Fix this by release these two resource when failure.<br /> <br /> Here is the kmemleak stack when percpu failed:<br /> <br /> unreferenced object 0xffff88819de2a600 (size 512):<br /> comm "shmem_2nstest", pid 120711, jiffies 4300542254<br /> hex dump (first 32 bytes):<br /> 60 aa 9d 84 ff ff ff ff fc 18 48 b2 84 88 ff ff `.........H.....<br /> 04 00 00 00 a4 01 00 00 20 e4 56 81 ff ff ff ff ........ .V.....<br /> backtrace (crc be7cba35):<br /> [] __kmalloc_node_track_caller_noprof+0x333/0x420<br /> [] kmemdup_noprof+0x26/0x50<br /> [] setup_mq_sysctls+0x57/0x1d0<br /> [] copy_ipcs+0x29c/0x3b0<br /> [] create_new_namespaces+0x1d0/0x920<br /> [] copy_namespaces+0x2e9/0x3e0<br /> [] copy_process+0x29f3/0x7ff0<br /> [] kernel_clone+0xc0/0x650<br /> [] __do_sys_clone+0xa1/0xe0<br /> [] do_syscall_64+0xbf/0x1c0<br /> [] entry_SYSCALL_64_after_hwframe+0x4b/0x53