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List: freebsd-fs
Subject: [Bug 259068] ext2fs can violate some INVARIANTS if file system is damaged
From: bugzilla-noreply () freebsd ! org
Date: 2023-03-18 6:17:15
Message-ID: bug-259068-3630-4WHuVgssqz () https ! bugs ! freebsd ! org/bugzilla/
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=259068
--- Comment #1 from commit-hook@FreeBSD.org ---
A commit in branch main references this bug:
URL:
https://cgit.FreeBSD.org/src/commit/?id=366da717deda3964ae369f1f2fbd62114d14c587
commit 366da717deda3964ae369f1f2fbd62114d14c587
Author: Fedor Uporov <fsu@FreeBSD.org>
AuthorDate: 2023-02-09 09:34:25 +0000
Commit: Fedor Uporov <fsu@FreeBSD.org>
CommitDate: 2023-03-18 06:16:22 +0000
Add root directory entry check.
Add check that directory entry with ino=EXT2_ROOTINO
have correct namelength and name. It is possible to
create malicious image which will cause panic if root
directory entry have incorrect name.
PR: 259068
Reported by: Robert Morris
Reviewed by: pfg
MFC after: 2 weeks
Differential Revision: https://reviews.freebsd.org/D38502
sys/fs/ext2fs/ext2_lookup.c | 7 +++++++
1 file changed, 7 insertions(+)
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