ntfs3: fix double free of sbi->options->nls and clarify ownership of fc->fs_private

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commit 02f312754c ("ntfs3: fix use-after-free of sbi->options in cmp_fnames") introduced a use-after-free bug
due to improper handling of sbi->options in error paths. This resulted in crashes when superblock cleanup
is performed in ntfs_put_super.

This patch ensures that the options structure and its subfields are properly freed, preventing the memory
corruption and use-after-free errors.

Fixes: 02f312754c ("ntfs3: fix use-after-free of sbi->options in cmp_fnames")
Reported-by: syzbot+cc433e4cd6d54736bf80@syzkaller.appspotmail.com
Closes: https://syzkaller.appspot.com/bug?extid=cc433e4cd6d54736bf80
Signed-off-by: YangWen <anmuxixixi@gmail.com>
[almaz.alexandrovich@paragon-software.com: added fixes and closes tags]
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>

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YangWen 2025-10-31 00:20:45 +08:00 • committed by Konstantin Komarov

parent a8a3ca23bb

commit aee4d5a521

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fs/ntfs3/super.c

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