kernel/linux
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ synced 2026-11-10 20:48:12 +00:00
Code Issues Releases Packages Activity
linux/drivers/dibs
History
Alexandra Winter 9e6869be49 net/dibs: Correct freeing of dmb_clientid_arr 
A dibs device interrupt handler can be active after dibs_dev_del() and
may still access dmb_clientid_arr. (UAF)

In case of a failure in dibs_dev_add() being called by dibs_lo_dev_probe()
dmb_clientid_arr is freed twice (double free).

Free dmb_clientid_arr in dibs_dev_release() after last reference is gone.
Note that allocating in dibs_dev_add() instead of dibs_dev_alloc() is ok
for now, because no dmbs can be registered before dibs_dev_add().

Fixes: cc21191b58 ("dibs: Move data path to dibs layer")
Cc: stable@vger.kernel.org
Co-developed-by: Hidayath Khan <hidayath@linux.ibm.com>
Signed-off-by: Hidayath Khan <hidayath@linux.ibm.com>
Signed-off-by: Alexandra Winter <wintera@linux.ibm.com>
Reviewed-by: Dust Li <dust.li@linux.alibaba.com>
Link: https://patch.msgid.link/20260810111432.2334900-1-wintera@linux.ibm.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
History 2026-08-12 17:08:05 -07:00
..
dibs_loopback.c net/dibs: Correct freeing of dmb_clientid_arr 2026-08-12 17:08:05 -07:00
dibs_loopback.h dibs: Move data path to dibs layer 2025-09-23 11:13:22 +02:00
dibs_main.c net/dibs: Correct freeing of dmb_clientid_arr 2026-08-12 17:08:05 -07:00
Kconfig dibs: Improve DIBS prompts and help texts 2026-05-18 16:53:53 -07:00
Makefile dibs: Define dibs loopback 2025-09-23 11:13:21 +02:00