AuxXxilium/linux_dsm_epyc7002
1
0
Fork 0
mirror of https://github.com/AuxXxilium/linux_dsm_epyc7002.git synced 2024-11-26 07:30:52 +07:00
Code Issues Actions Packages Projects Releases Wiki Activity

firewire: cdev: disallow receive packets without header

Browse Source 
In receive contexts, reject packets with header_length==0.  This would
be an instruction to queue zero packets which would not make sense.

This prevents a division by zero in the OHCI driver.

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
This commit is contained in:
Clemens Ladisch 2010-03-31 16:26:39 +02:00 committed by Stefan Richter
parent fe43d6d9cf
commit 4ba1d9c0c2
1 changed files with 2 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
drivers/firewire/core-cdev.c
View File

@ -968,7 +968,8 @@ static int ioctl_queue_iso(struct client *client, union ioctl_arg *arg)
if (ctx->header_size == 0) {
if (u.packet.header_length > 0)
return -EINVAL;
} else if (u.packet.header_length % ctx->header_size != 0) {
} else if (u.packet.header_length == 0 ||
u.packet.header_length % ctx->header_size != 0) {
return -EINVAL;
}
header_length = 0;