linux/drivers/block
Eric Dumazet c365e8f20f nbd: restrict sockets to TCP and UDP
[ Upstream commit 9f7c02e031 ]

Recently, syzbot started to abuse NBD with all kinds of sockets.

Commit cf1b2326b7 ("nbd: verify socket is supported during setup")
made sure the socket supported a shutdown() method.

Explicitely accept TCP and UNIX stream sockets.

Fixes: cf1b2326b7 ("nbd: verify socket is supported during setup")
Reported-by: syzbot+e1cd6bd8493060bd701d@syzkaller.appspotmail.com
Closes: https://lore.kernel.org/netdev/CANn89iJ+76eE3A_8S_zTpSyW5hvPRn6V57458hCZGY5hbH_bFA@mail.gmail.com/T/#m081036e8747cd7e2626c1da5d78c8b9d1e55b154
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Mike Christie <mchristi@redhat.com>
Cc: Richard W.M. Jones <rjones@redhat.com>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: Yu Kuai <yukuai1@huaweicloud.com>
Cc: linux-block@vger.kernel.org
Cc: nbd@other.debian.org
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Sasha Levin <sashal@kernel.org>
History 2025-10-15 11:56:28 +02:00
..
aoe aoe: defer rexmit timer downdev work to workqueue 2025-07-10 15:59:50 +02:00
drbd drbd: add missing kref_get in handle_write_conflicts 2025-08-28 16:25:51 +02:00
mtip32xx block: move from strlcpy with unused retval to strscpy 2022-09-21 19:45:04 -06:00
null_blk null_blk: Fix the description of the cache_size module argument 2025-10-15 11:56:27 +02:00
paride block: Change the type of req_op() and bio_op() into enum req_op 2022-07-14 12:14:30 -06:00
rnbd block/rnbd-srv: Check for unlikely string overflow 2024-02-05 20:12:52 +00:00
xen-blkback xen: branch for v6.0-rc4 2022-09-03 13:23:11 -07:00
zram zram: fix potential UAF of zram table 2025-01-23 17:17:13 +01:00
amiflop.c block: remove blk_cleanup_disk 2022-06-28 06:33:15 -06:00
ataflop.c block: remove blk_cleanup_disk 2022-06-28 06:33:15 -06:00
brd.c brd: defer automatic disk creation until module initialization succeeds 2024-12-14 19:53:14 +01:00
floppy.c floppy: Fix memory leak in do_floppy_init() 2022-12-31 13:33:11 +01:00
Kconfig ublk_drv: comment on ublk_driver entry of Kconfig 2022-10-31 07:23:24 -06:00
loop.c loop: aio inherit the ioprio of original request 2025-05-02 07:47:07 +02:00
Makefile remove the sx8 block driver 2022-08-02 17:22:46 -06:00
n64cart.c block: remove blk_cleanup_disk 2022-06-28 06:33:15 -06:00
nbd.c nbd: restrict sockets to TCP and UDP 2025-10-15 11:56:28 +02:00
pktcdvd.c pktcdvd: check for NULL returna fter calling bio_split_to_limits() 2023-01-24 07:24:37 +01:00
ps3disk.c block: remove blk_cleanup_disk 2022-06-28 06:33:15 -06:00
ps3vram.c block: handle bio_split_to_limits() NULL return 2023-01-18 11:58:33 +01:00
rbd.c rbd: don't assume RBD_LOCK_STATE_LOCKED for exclusive mappings 2024-08-03 08:49:45 +02:00
rbd_types.h libceph, rbd: replace zero-length array with flexible-array 2020-06-01 13:22:53 +02:00
sunvdc.c sunvdc: Balance device refcount in vdc_port_mpgroup_check 2025-08-28 16:25:49 +02:00
swim.c block: remove blk_cleanup_disk 2022-06-28 06:33:15 -06:00
swim3.c block: remove blk_cleanup_disk 2022-06-28 06:33:15 -06:00
swim_asm.S treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
ublk_drv.c ublk: use vmalloc for ublk_device's __queues 2025-08-15 12:04:52 +02:00
virtio_blk.c virtio-blk: don't keep queue frozen during system suspend 2025-01-02 10:30:52 +01:00
xen-blkfront.c xen/blkfront: Only check REQ_FUA for writes 2023-06-21 16:00:53 +02:00
z2ram.c block: remove blk_cleanup_disk 2022-06-28 06:33:15 -06:00