From 5f78e89b5f7041895c4820be5c000792243b634f Mon Sep 17 00:00:00 2001 From: Alan Cox Date: Wed, 7 Nov 2007 23:58:10 +0000 Subject: [SCSI] aacraid: fix security weakness Actually there are several but one is trivially fixed 1. FSACTL_GET_NEXT_ADAPTER_FIB ioctl does not lock dev->fib_list but needs to 2. Ditto for FSACTL_CLOSE_GET_ADAPTER_FIB 3. It is possible to construct an attack via the SRB ioctls where the user obtains assorted elevated privileges. Various approaches are possible, the trivial ones being things like writing to the raw media via scsi commands and the swap image of other executing programs with higher privileges. So the ioctls should be CAP_SYS_RAWIO - at least all the FIB manipulating ones. This is a bandaid fix for #3 but probably the ioctls should grow their own capable checks. The other two bugs need someone competent in that driver to fix them. Signed-off-by: Alan Cox Acked-by: Mark Salyzyn Signed-off-by: James Bottomley --- drivers/scsi/aacraid/linit.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/scsi/aacraid/linit.c b/drivers/scsi/aacraid/linit.c index 53061bceaad..9dd331bc29b 100644 --- a/drivers/scsi/aacraid/linit.c +++ b/drivers/scsi/aacraid/linit.c @@ -636,7 +636,7 @@ static int aac_cfg_open(struct inode *inode, struct file *file) static int aac_cfg_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg) { - if (!capable(CAP_SYS_ADMIN)) + if (!capable(CAP_SYS_RAWIO)) return -EPERM; return aac_do_ioctl(file->private_data, cmd, (void __user *)arg); } @@ -691,7 +691,7 @@ static int aac_compat_ioctl(struct scsi_device *sdev, int cmd, void __user *arg) static long aac_compat_cfg_ioctl(struct file *file, unsigned cmd, unsigned long arg) { - if (!capable(CAP_SYS_ADMIN)) + if (!capable(CAP_SYS_RAWIO)) return -EPERM; return aac_compat_do_ioctl((struct aac_dev *)file->private_data, cmd, arg); } -- cgit v1.2.3