CVE-2022-49270

published 2025-02-26

CVE-2022-49270: In the Linux kernel, the following vulnerability has been resolved: dm: fix use-after-free in dm_cleanup_zoned_dev() dm_cleanup_zoned_dev() uses queue, so it…

Priority P3 38 high 7.8 CVSS 3.1

AV L AC L PR L UI N S U C H I H A H

In the Linux kernel, the following vulnerability has been resolved:

dm: fix use-after-free in dm_cleanup_zoned_dev()

dm_cleanup_zoned_dev() uses queue, so it must be called
before blk_cleanup_disk() starts its killing:

blk_cleanup_disk->blk_cleanup_queue()->kobject_put()->blk_release_queue()->
->...RCU...->blk_free_queue_rcu()->kmem_cache_free()

Otherwise, RCU callback may be executed first and
dm_cleanup_zoned_dev() will touch free'd memory:

BUG: KASAN: use-after-free in dm_cleanup_zoned_dev+0x33/0xd0
Read of size 8 at addr ffff88805ac6e430 by task dmsetup/681

CPU: 4 PID: 681 Comm: dmsetup Not tainted 5.17.0-rc2+ #6
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-2 04/01/2014
Call Trace:

dump_stack_lvl+0x57/0x7d
print_address_description.constprop.0+0x1f/0x150
? dm_cleanup_zoned_dev+0x33/0xd0
kasan_report.cold+0x7f/0x11b
? dm_cleanup_zoned_dev+0x33/0xd0
dm_cleanup_zoned_dev+0x33/0xd0
__dm_destroy+0x26a/0x400
? dm_blk_ioctl+0x230/0x230
? up_write+0xd8/0x270
dev_remove+0x156/0x1d0
ctl_ioctl+0x269/0x530
? table_clear+0x140/0x140
? lock_release+0xb2/0x750
? remove_all+0x40/0x40
? rcu_read_lock_sched_held+0x12/0x70
? lock_downgrade+0x3c0/0x3c0
? rcu_read_lock_sched_held+0x12/0x70
dm_ctl_ioctl+0xa/0x10
__x64_sys_ioctl+0xb9/0xf0
do_syscall_64+0x3b/0x90
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7fb6dfa95c27

Affected

12 ranges

Vendor	Product	Version range	Fixed in
debian	linux	< linux 5.17.3-1 (bookworm)	linux 5.17.3-1 (bookworm)
linux	linux	—	—
linux	linux	>= bb37d77239af25cde59693dbe3fac04dd17d7b29 < 0987f00a76a17aa7213da492c00ed9e5a6210c73	0987f00a76a17aa7213da492c00ed9e5a6210c73
linux	linux	>= bb37d77239af25cde59693dbe3fac04dd17d7b29 < fdfe414ca28ddfd562c233fb27385cf820de03e8	fdfe414ca28ddfd562c233fb27385cf820de03e8
linux	linux	>= bb37d77239af25cde59693dbe3fac04dd17d7b29 < 43a043aed964659bc69ef81f266912b73c80d837	43a043aed964659bc69ef81f266912b73c80d837
linux	linux	>= bb37d77239af25cde59693dbe3fac04dd17d7b29 < 588b7f5df0cb64f281290c7672470c006abe7160	588b7f5df0cb64f281290c7672470c006abe7160
linux	linux_kernel	>= 0 < 5.17.3-1	5.17.3-1
linux	linux_kernel	>= 0 < 5.17.3-1	5.17.3-1
linux	linux_kernel	>= 0 < 5.17.3-1	5.17.3-1
linux	linux_kernel	>= 5.14 < 5.15.33	5.15.33
linux	linux_kernel	>= 5.16 < 5.16.19	5.16.19
linux	linux_kernel	>= 5.17 < 5.17.2	5.17.2

CVSS provenance

nvd v3.1 7.8 HIGH CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

osv 7.8 HIGH

vendor_debian 7.8 HIGH

vendor_redhat 7.8 HIGH

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