cbcvebase.
CVE-2022-50434
published 2025-10-01

CVE-2022-50434: In the Linux kernel, the following vulnerability has been resolved: blk-mq: fix possible memleak when register 'hctx' failed There's issue as follows when do…

PriorityP421medium5.5CVSS 3.1
AVLACLPRLUINSUCNINAH
EPSS
0.17%
6.5th percentile
In the Linux kernel, the following vulnerability has been resolved: blk-mq: fix possible memleak when register 'hctx' failed There's issue as follows when do fault injection test: unreferenced object 0xffff888132a9f400 (size 512): comm "insmod", pid 308021, jiffies 4324277909 (age 509.733s) hex dump (first 32 bytes): 00 00 00 00 00 00 00 00 08 f4 a9 32 81 88 ff ff ...........2.... 08 f4 a9 32 81 88 ff ff 00 00 00 00 00 00 00 00 ...2............ backtrace: [] kmalloc_node_trace+0x22/0xa0 [] blk_mq_alloc_and_init_hctx+0x3f1/0x7e0 [] blk_mq_realloc_hw_ctxs+0x1e6/0x230 [] blk_mq_init_allocated_queue+0x27e/0x910 [] __blk_mq_alloc_disk+0x67/0xf0 [] 0xffffffffa2ad310f [] 0xffffffffa2af824a [] do_one_initcall+0x87/0x2a0 [] do_init_module+0xdf/0x320 [] load_module+0x3006/0x3390 [] __do_sys_finit_module+0x113/0x1b0 [] do_syscall_64+0x35/0x80 [] entry_SYSCALL_64_after_hwframe+0x46/0xb0 Fault injection context as follows: kobject_add blk_mq_register_hctx blk_mq_sysfs_register blk_register_queue device_add_disk null_add_dev.part.0 [null_blk] As 'blk_mq_register_hctx' may already add some objects when failed halfway, but there isn't do fallback, caller don't know which objects add failed. To solve above issue just do fallback when add objects failed halfway in 'blk_mq_register_hctx'.

Affected

23 ranges
VendorProductVersion rangeFixed in
debianlinux< linux 6.1.4-1 (bookworm)linux 6.1.4-1 (bookworm)
linuxlinux——
linuxlinux>= 67aec14ce87fe25bdfff7dbf468556333df11c4e < 654870789c3c1b9763316ef1c71d7a449127b175654870789c3c1b9763316ef1c71d7a449127b175
linuxlinux>= 67aec14ce87fe25bdfff7dbf468556333df11c4e < cb186eb47fb9dd327bdefa15f0c5fc55c53a40ddcb186eb47fb9dd327bdefa15f0c5fc55c53a40dd
linuxlinux>= 67aec14ce87fe25bdfff7dbf468556333df11c4e < 02bc8bc6eab03c84373281b85cb6e98747172ff702bc8bc6eab03c84373281b85cb6e98747172ff7
linuxlinux>= 67aec14ce87fe25bdfff7dbf468556333df11c4e < 87fd18016a47ea8ae12641377a390172c4aa97a787fd18016a47ea8ae12641377a390172c4aa97a7
linuxlinux>= 67aec14ce87fe25bdfff7dbf468556333df11c4e < e8022da1fa2fdf2fa204b445dd3354e7a66d085ae8022da1fa2fdf2fa204b445dd3354e7a66d085a
linuxlinux>= 67aec14ce87fe25bdfff7dbf468556333df11c4e < eff45bfbc25a2509a6362dea6e699e14083c693ceff45bfbc25a2509a6362dea6e699e14083c693c
linuxlinux>= 67aec14ce87fe25bdfff7dbf468556333df11c4e < 4b7fafa5f39b15c3a6ca3b95e534d05d6904cc954b7fafa5f39b15c3a6ca3b95e534d05d6904cc95
linuxlinux>= 67aec14ce87fe25bdfff7dbf468556333df11c4e < 33e8a3f61814ea30615d0fafaf50477975d6c1ca33e8a3f61814ea30615d0fafaf50477975d6c1ca
linuxlinux>= 67aec14ce87fe25bdfff7dbf468556333df11c4e < 4b7a21c57b14fbcd0e1729150189e5933f5088e94b7a21c57b14fbcd0e1729150189e5933f5088e9
linuxlinux_kernel>= 0 < 5.10.178-15.10.178-1
linuxlinux_kernel>= 0 < 6.1.4-16.1.4-1
linuxlinux_kernel>= 0 < 6.1.4-16.1.4-1
linuxlinux_kernel>= 0 < 6.1.4-16.1.4-1
linuxlinux_kernel>= 3.16 < 4.9.3374.9.337
linuxlinux_kernel>= 4.10 < 4.14.3034.14.303
linuxlinux_kernel>= 4.15 < 4.19.2704.19.270
linuxlinux_kernel>= 4.20 < 5.4.2295.4.229
linuxlinux_kernel>= 5.11 < 5.15.865.15.86
linuxlinux_kernel>= 5.16 < 6.0.166.0.16
linuxlinux_kernel>= 5.5 < 5.10.1635.10.163
linuxlinux_kernel>= 6.1 < 6.1.26.1.2

CVSS provenance

nvdv3.15.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
osv5.5MEDIUM
vendor_debian5.5MEDIUM
vendor_redhat5.5MEDIUM
Stop checking back — get the weekly exploitation signal.

Every Monday: what got weaponized or added to CISA KEV in the last seven days — each CVE cross-linked to its PoC, Nuclei template, and detection rule. Free, one email a week, unsubscribe in one click.