diff options
Diffstat (limited to 'fs/namei.c')
| -rw-r--r-- | fs/namei.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/fs/namei.c b/fs/namei.c index 7377020a2cba..003c9a1b2f90 100644 --- a/fs/namei.c +++ b/fs/namei.c @@ -4011,6 +4011,10 @@ int vfs_tmpfile(struct mnt_idmap *idmap, int error; int open_flag = file->f_flags; + /* A tmpfile is I_LINKABLE, so guard its owner like may_o_create(). */ + if (!fsuidgid_has_mapping(dir->i_sb, idmap)) + return -EOVERFLOW; + /* we want directory to be writable */ error = inode_permission(idmap, dir, MAY_WRITE | MAY_EXEC); if (error) |