diff options
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/ext4/ext4_common.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/fs/ext4/ext4_common.c b/fs/ext4/ext4_common.c index 7cf0160c408..76f7102456e 100644 --- a/fs/ext4/ext4_common.c +++ b/fs/ext4/ext4_common.c @@ -2181,13 +2181,18 @@ static char *ext4fs_read_symlink(struct ext2fs_node *node) struct ext2fs_node *diro = node; int status; loff_t actread; + size_t alloc_size; if (!diro->inode_read) { status = ext4fs_read_inode(diro->data, diro->ino, &diro->inode); if (status == 0) return NULL; } - symlink = zalloc(le32_to_cpu(diro->inode.size) + 1); + + if (__builtin_add_overflow(le32_to_cpu(diro->inode.size), 1, &alloc_size)) + return NULL; + + symlink = zalloc(alloc_size); if (!symlink) return NULL; |