CVE-2022-50451

/// Technical description

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().

/// Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

/// References