Bug 2400710 (CVE-2022-50451) - CVE-2022-50451 kernel: fs/ntfs3: Fix memory leak on ntfs_fill_super() error path
Summary: CVE-2022-50451 kernel: fs/ntfs3: Fix memory leak on ntfs_fill_super() error path
Keywords:
Status: NEW
Alias: CVE-2022-50451
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2025-10-01 12:02 UTC by OSIDB Bzimport
Modified: 2025-10-01 23:07 UTC (History)
0 users

Fixed In Version:
Clone Of:
Environment:
Last Closed:
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Description OSIDB Bzimport 2025-10-01 12:02:58 UTC
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().


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