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fs/ntfs3: Add rough attr alloc_size check

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

[ Upstream commit c4a8ba334262e9a5c158d618a4820e1b9c12495c ]

Reported-by: syzbot+c6d94bedd910a8216d25@syzkaller.appspotmail.com
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
CVE-2024-50246
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 f963d98f5c
commit 2e84d7f874
1 changed files with 3 additions and 0 deletions
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fs/ntfs3/record.c
+3
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@@ -330,6 +330,9 @@ struct ATTRIB *mi_enum_attr(struct mft_inode *mi, struct ATTRIB *attr)
} else {
if (attr->nres.c_unit)
return NULL;
if (alloc_size > mi->sbi->volume.size)
return NULL;
}
return attr;