diff options
| author | Lizhi Xu <lizhi.xu@windriver.com> | 2024-02-02 20:15:31 +0800 |
|---|---|---|
| committer | Eric Van Hensbergen <ericvh@kernel.org> | 2024-03-25 00:34:35 +0000 |
| commit | 11763a8598f888dec631a8a903f7ada32181001f (patch) | |
| tree | 662db161bf74852c7bcec0b4c70d372bfcab2ad5 | |
| parent | 4cece764965020c22cff7665b18a012006359095 (diff) | |
| download | linux-11763a8598f888dec631a8a903f7ada32181001f.tar.gz | |
fs/9p: fix uaf in in v9fs_stat2inode_dotl
The incorrect logical order of accessing the st object code in v9fs_fid_iget_dotl
is causing this uaf.
Fixes: 724a08450f74 ("fs/9p: simplify iget to remove unnecessary paths")
Reported-and-tested-by: syzbot+7a3d75905ea1a830dbe5@syzkaller.appspotmail.com
Signed-off-by: Lizhi Xu <lizhi.xu@windriver.com>
Tested-by: Breno Leitao <leitao@debian.org>
Reviewed-by: Dominique Martinet <asmadeus@codewreck.org>
Signed-off-by: Eric Van Hensbergen <ericvh@kernel.org>
| -rw-r--r-- | fs/9p/vfs_inode_dotl.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/9p/vfs_inode_dotl.c b/fs/9p/vfs_inode_dotl.c index ef9db3e035062b..2b313fe7003e48 100644 --- a/fs/9p/vfs_inode_dotl.c +++ b/fs/9p/vfs_inode_dotl.c @@ -78,11 +78,11 @@ struct inode *v9fs_fid_iget_dotl(struct super_block *sb, struct p9_fid *fid) retval = v9fs_init_inode(v9ses, inode, &fid->qid, st->st_mode, new_decode_dev(st->st_rdev)); + v9fs_stat2inode_dotl(st, inode, 0); kfree(st); if (retval) goto error; - v9fs_stat2inode_dotl(st, inode, 0); v9fs_set_netfs_context(inode); v9fs_cache_inode_get_cookie(inode); retval = v9fs_get_acl(inode, fid); |