Messages in this thread Patch in this message | | | From | Manas Ghandat <> | Subject | [PATCH-v2] jfs: fix slab-out-of-bounds Read in dtSearch | Date | Wed, 25 Oct 2023 11:39:07 +0530 |
| |
Currently while searching for current page in the sorted entry table of the page there is a out of bound access. Added a bound check to fix the error.
Reported-by: kernel test robot <lkp@intel.com> Reported-by: Dan Carpenter <dan.carpenter@linaro.org> Closes: https://lore.kernel.org/r/202310241724.Ed02yUz9-lkp@intel.com/ Signed-off-by: Manas Ghandat <ghandatmanas@gmail.com> --- V1 -> V2 : Removed redundant check on stbl
fs/jfs/jfs_dtree.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/fs/jfs/jfs_dtree.c b/fs/jfs/jfs_dtree.c index 92b7c533407c..cf67d32d5b7f 100644 --- a/fs/jfs/jfs_dtree.c +++ b/fs/jfs/jfs_dtree.c @@ -633,6 +633,9 @@ int dtSearch(struct inode *ip, struct component_name * key, ino_t * data, for (base = 0, lim = p->header.nextindex; lim; lim >>= 1) { index = base + (lim >> 1); + if (stbl[index] < 0) + goto out; + if (p->header.flag & BT_LEAF) { /* uppercase leaf name to compare */ cmp = -- 2.37.2
| |