CVE-2022-49381

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> jffs2: fix memory leak in jffs2_do_fill_super<br /> <br /> If jffs2_iget() or d_make_root() in jffs2_do_fill_super() returns<br /> an error, we can observe the following kmemleak report:<br /> <br /> --------------------------------------------<br /> unreferenced object 0xffff888105a65340 (size 64):<br /> comm "mount", pid 710, jiffies 4302851558 (age 58.239s)<br /> hex dump (first 32 bytes):<br /> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................<br /> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................<br /> backtrace:<br /> [] kmem_cache_alloc_trace+0x475/0x8a0<br /> [] jffs2_sum_init+0x96/0x1a0<br /> [] jffs2_do_mount_fs+0x745/0x2120<br /> [] jffs2_do_fill_super+0x35c/0x810<br /> [] jffs2_fill_super+0x2b9/0x3b0<br /> [...]<br /> unreferenced object 0xffff8881bd7f0000 (size 65536):<br /> comm "mount", pid 710, jiffies 4302851558 (age 58.239s)<br /> hex dump (first 32 bytes):<br /> bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb ................<br /> bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb ................<br /> backtrace:<br /> [] kmalloc_order+0xda/0x110<br /> [] kmalloc_order_trace+0x21/0x130<br /> [] __kmalloc+0x711/0x8a0<br /> [] jffs2_sum_init+0xd9/0x1a0<br /> [] jffs2_do_mount_fs+0x745/0x2120<br /> [] jffs2_do_fill_super+0x35c/0x810<br /> [] jffs2_fill_super+0x2b9/0x3b0<br /> [...]<br /> --------------------------------------------<br /> <br /> This is because the resources allocated in jffs2_sum_init() are not<br /> released. Call jffs2_sum_exit() to release these resources to solve<br /> the problem.