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linux/drivers/block
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Mikhail Lobanov 90ed958acf drbd: Add NULL check for net_conf to prevent dereference in state validation 
commit a5e61b50c9 upstream.

If the net_conf pointer is NULL and the code attempts to access its
fields without a check, it will lead to a null pointer dereference.
Add a NULL check before dereferencing the pointer.

Found by Linux Verification Center (linuxtesting.org) with SVACE.

Fixes: 44ed167da7 ("drbd: rcu_read_lock() and rcu_dereference() for tconn->net_conf")
Cc: stable@vger.kernel.org
Signed-off-by: Mikhail Lobanov <m.lobanov@rosalinux.ru>
Link: https://lore.kernel.org/r/20240909133740.84297-1-m.lobanov@rosalinux.ru
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
History 2024-10-17 15:11:13 +02:00
..
aoe aoe: fix the potential use-after-free problem in aoecmd_cfg_pkts 2024-03-26 18:21:15 -04:00
drbd drbd: Add NULL check for net_conf to prevent dereference in state validation 2024-10-17 15:11:13 +02:00
mtip32xx block: fix surprise removal for drivers calling blk_set_queue_dying 2022-02-23 12:03:15 +01:00
null_blk null_blk: fix validation of block size 2024-07-27 10:46:09 +02:00
paride pcd: fix error codes in pcd_init_unit() 2023-09-19 12:23:04 +02:00
rnbd block/rnbd-srv: Check for unlikely string overflow 2024-02-23 08:54:43 +01:00
rsxx block: handle bio_split_to_limits() NULL return 2023-01-18 11:48:58 +01:00
xen-blkback xen-blkback: Advertise feature-persistent as user requested 2022-09-08 12:28:05 +02:00
zram zram: do not lookup algorithm in backends table 2022-08-25 11:40:34 +02:00
amiflop.c block: drop unused includes in <linux/genhd.h> 2022-03-16 14:23:46 +01:00
ataflop.c block: drop unused includes in <linux/genhd.h> 2022-03-16 14:23:46 +01:00
brd.c brd: mark as nowait compatible 2023-03-17 08:48:51 +01:00
cryptoloop.c cryptoloop: add a deprecation warning 2021-08-27 10:44:54 -06:00
floppy.c floppy: Fix memory leak in do_floppy_init() 2022-12-31 13:14:47 +01:00
Kconfig remove the sx8 block driver 2023-06-14 11:12:59 +02:00
loop.c block: rename GENHD_FL_NO_PART_SCAN to GENHD_FL_NO_PART 2023-09-19 12:23:02 +02:00
loop.h loop: reduce the loop_ctl_mutex scope 2021-09-03 22:14:40 -06:00
Makefile remove the sx8 block driver 2023-06-14 11:12:59 +02:00
n64cart.c block: rename GENHD_FL_NO_PART_SCAN to GENHD_FL_NO_PART 2023-09-19 12:23:02 +02:00
nbd.c nbd: null check for nla_nest_start 2024-03-26 18:21:14 -04:00
pktcdvd.c block: handle bio_split_to_limits() NULL return 2023-01-18 11:48:58 +01:00
ps3disk.c ps3disk: use memcpy_{from,to}_bvec 2021-08-02 13:37:27 -06:00
ps3vram.c block: handle bio_split_to_limits() NULL return 2023-01-18 11:48:58 +01:00
rbd.c rbd: don't assume RBD_LOCK_STATE_LOCKED for exclusive mappings 2024-08-19 05:45:22 +02:00
rbd_types.h libceph, rbd: replace zero-length array with flexible-array 2020-06-01 13:22:53 +02:00
sunvdc.c block: sunvdc: add check for mdesc_grab() returning NULL 2023-03-22 13:31:27 +01:00
swim.c block: drop unused includes in <linux/genhd.h> 2022-03-16 14:23:46 +01:00
swim3.c swim3: use blk_mq_alloc_disk 2021-06-11 11:53:02 -06:00
swim_asm.S treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
virtio_blk.c virtio-blk: Ensure no requests in virtqueues before deleting vqs. 2024-03-01 13:21:47 +01:00
xen-blkfront.c xen/blkfront: Only check REQ_FUA for writes 2023-06-21 15:59:13 +02:00
z2ram.c for-5.14/drivers-2021-06-29 2021-06-30 12:21:16 -07:00