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fs/ntfs3: Additional check in ni_clear()

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BugLink: https://bugs.launchpad.net/bugs/2099996

[ Upstream commit d178944db36b3369b78a08ba520de109b89bf2a9 ]

Checking of NTFS_FLAGS_LOG_REPLAYING added to prevent access to
uninitialized bitmap during replay process.

Reported-by: syzbot+3bfd2cc059ab93efcdb4@syzkaller.appspotmail.com
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
CVE-2024-50244
Signed-off-by: Koichiro Den <koichiro.den@canonical.com>
Signed-off-by: Stefan Bader <stefan.bader@canonical.com>
This commit is contained in:
Konstantin Komarov
2025-02-25 22:59:22 +09:00
committed by Stefan Bader
parent bc8746a391
commit ed92140748
1 changed files with 3 additions and 1 deletions
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fs/ntfs3/frecord.c
+3 -1
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@@ -102,7 +102,9 @@ void ni_clear(struct ntfs_inode *ni)
{
struct rb_node *node;
if (!ni->vfs_inode.i_nlink && ni->mi.mrec && is_rec_inuse(ni->mi.mrec))
if (!ni->vfs_inode.i_nlink && ni->mi.mrec &&
is_rec_inuse(ni->mi.mrec) &&
!(ni->mi.sbi->flags & NTFS_FLAGS_LOG_REPLAYING))
ni_delete_all(ni);
al_destroy(ni);