diff options
| author | Eric Biggers <ebiggers@google.com> | 2022-11-06 14:48:38 -0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-01-07 11:12:00 +0100 |
| commit | d1c97077fa603cc52ca8746a46ab13991f5eb99c (patch) | |
| tree | f03be248d1ea48013510406fadf0f5a77e205eb7 /fs/ext4/fast_commit.h | |
| parent | 1ba993208bcfd691e241483420a2a761d3f15750 (diff) | |
ext4: add missing validation of fast-commit record lengths
commit 64b4a25c3de81a69724e888ec2db3533b43816e2 upstream.
Validate the inode and filename lengths in fast-commit journal records
so that a malicious fast-commit journal cannot cause a crash by having
invalid values for these. Also validate EXT4_FC_TAG_DEL_RANGE.
Fixes: aa75f4d3daae ("ext4: main fast-commit commit path")
Cc: <stable@vger.kernel.org> # v5.10+
Signed-off-by: Eric Biggers <ebiggers@google.com>
Link: https://lore.kernel.org/r/20221106224841.279231-5-ebiggers@kernel.org
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'fs/ext4/fast_commit.h')
| -rw-r--r-- | fs/ext4/fast_commit.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/ext4/fast_commit.h b/fs/ext4/fast_commit.h index 256f2ad27204a..2fadb2c4780c8 100644 --- a/fs/ext4/fast_commit.h +++ b/fs/ext4/fast_commit.h @@ -58,7 +58,7 @@ struct ext4_fc_dentry_info { __u8 fc_dname[]; }; -/* Value structure for EXT4_FC_TAG_INODE and EXT4_FC_TAG_INODE_PARTIAL. */ +/* Value structure for EXT4_FC_TAG_INODE. */ struct ext4_fc_inode { __le32 fc_ino; __u8 fc_raw_inode[]; |