5.5

CVE-2022-50451

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

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().
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Linux ≫ Linux Kernel Version >= 5.15 < 5.15.87
Linux ≫ Linux Kernel Version >= 5.16 < 6.0.17
Linux ≫ Linux Kernel Version >= 6.1 < 6.1.3
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.15% 0.047
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 5.5 1.8 3.6
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-401 Missing Release of Memory after Effective Lifetime

The product does not sufficiently track and release allocated memory after it has been used, making the memory unavailable for reallocation and reuse.

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