CVE-2022-50451

Summary

In the Linux kernel, the following vulnerability has been resolved:

fs/ntfs3: Fix memory leak on ntfs_fill_super() error path

syzbot reported kmemleak as below:

BUG: memory leak unreferenced object 0xffff8880122f1540 (size 32): comm "a.out", pid 6664, jiffies 4294939771 (age 25.500s) hex dump (first 32 bytes): 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ……………. 00 00 00 00 00 00 00 00 ed ff ed ff 00 00 00 00 ……………. backtrace: [<ffffffff81b16052>] ntfs_init_fs_context+0x22/0x1c0 [<ffffffff8164aaa7>] alloc_fs_context+0x217/0x430 [<ffffffff81626dd4>] path_mount+0x704/0x1080 [<ffffffff81627e7c>] __x64_sys_mount+0x18c/0x1d0 [<ffffffff84593e14>] do_syscall_64+0x34/0xb0 [<ffffffff84600087>] entry_SYSCALL_64_after_hwframe+0x63/0xcd

This patch fixes this issue by freeing mount options on error path of ntfs_fill_super().

Affected Software

Weaknesses

References

• https://git.kernel.org/stable/c/2dd9ccfb06bcdad30ad92d96c3affa38a458679e
• https://git.kernel.org/stable/c/ff0df7d9cdbb12878155168b5234e99029e5377f
• https://git.kernel.org/stable/c/2600c80ea7b39f987c3fa89287e73d62e322bbbd
• https://git.kernel.org/stable/c/51e76a232f8c037f1d9e9922edc25b003d5f3414

• ←Previous
• Next→