diff options
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/jffs2/readinode.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/fs/jffs2/readinode.c b/fs/jffs2/readinode.c index dc0437e84763..9897f38af707 100644 --- a/fs/jffs2/readinode.c +++ b/fs/jffs2/readinode.c @@ -1266,6 +1266,12 @@ static int jffs2_do_read_inode_internal(struct jffs2_sb_info *c, /* Symlink's inode data is the target path. Read it and * keep in RAM to facilitate quick follow symlink * operation. */ + uint32_t csize = je32_to_cpu(latest_node->csize); + if (csize > JFFS2_MAX_NAME_LEN) { + mutex_unlock(&f->sem); + jffs2_do_clear_inode(c, f); + return -ENAMETOOLONG; + } f->target = kmalloc(je32_to_cpu(latest_node->csize) + 1, GFP_KERNEL); if (!f->target) { JFFS2_ERROR("can't allocate %d bytes of memory for the symlink target path cache\n", je32_to_cpu(latest_node->csize)); |