diff options
| author | Konstantin Komarov <almaz.alexandrovich@paragon-software.com> | 2022-10-10 13:15:33 +0300 |
|---|---|---|
| committer | Konstantin Komarov <almaz.alexandrovich@paragon-software.com> | 2022-11-14 19:50:47 +0300 |
| commit | 0e8235d28f3a0e9eda9f02ff67ee566d5f42b66b (patch) | |
| tree | 99078a7d388b9b9867b7387cce413fd918cef4f9 /fs/ntfs3/run.c | |
| parent | 6f80ed14d76c730f7943777ba259cd32870e6433 (diff) | |
| download | linux-0e8235d28f3a0e9eda9f02ff67ee566d5f42b66b.tar.xz | |
fs/ntfs3: Check fields while reading
Added new functions index_hdr_check and index_buf_check.
Now we check all stuff for correctness while reading from disk.
Also fixed bug with stale nfs data.
Reported-by: van fantasy <g1042620637@gmail.com>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
Diffstat (limited to 'fs/ntfs3/run.c')
| -rw-r--r-- | fs/ntfs3/run.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/fs/ntfs3/run.c b/fs/ntfs3/run.c index aaaa0d3d35a2..12d8682f33b5 100644 --- a/fs/ntfs3/run.c +++ b/fs/ntfs3/run.c @@ -919,12 +919,15 @@ out: */ int run_unpack(struct runs_tree *run, struct ntfs_sb_info *sbi, CLST ino, CLST svcn, CLST evcn, CLST vcn, const u8 *run_buf, - u32 run_buf_size) + int run_buf_size) { u64 prev_lcn, vcn64, lcn, next_vcn; const u8 *run_last, *run_0; bool is_mft = ino == MFT_REC_MFT; + if (run_buf_size < 0) + return -EINVAL; + /* Check for empty. */ if (evcn + 1 == svcn) return 0; @@ -1046,7 +1049,7 @@ int run_unpack(struct runs_tree *run, struct ntfs_sb_info *sbi, CLST ino, */ int run_unpack_ex(struct runs_tree *run, struct ntfs_sb_info *sbi, CLST ino, CLST svcn, CLST evcn, CLST vcn, const u8 *run_buf, - u32 run_buf_size) + int run_buf_size) { int ret, err; CLST next_vcn, lcn, len; |