cbcvebase.
CVE-2022-49986
published 2025-06-18

CVE-2022-49986: In the Linux kernel, the following vulnerability has been resolved: scsi: storvsc: Remove WQ_MEM_RECLAIM from storvsc_error_wq storvsc_error_wq workqueue…

PriorityP419medium5.5CVSS 3.1
AVLACLPRLUINSUCNINAH
EPSS
0.16%
5.5th percentile
In the Linux kernel, the following vulnerability has been resolved: scsi: storvsc: Remove WQ_MEM_RECLAIM from storvsc_error_wq storvsc_error_wq workqueue should not be marked as WQ_MEM_RECLAIM as it doesn't need to make forward progress under memory pressure. Marking this workqueue as WQ_MEM_RECLAIM may cause deadlock while flushing a non-WQ_MEM_RECLAIM workqueue. In the current state it causes the following warning: [ 14.506347] ------------[ cut here ]------------ [ 14.506354] workqueue: WQ_MEM_RECLAIM storvsc_error_wq_0:storvsc_remove_lun is flushing !WQ_MEM_RECLAIM events_freezable_power_:disk_events_workfn [ 14.506360] WARNING: CPU: 0 PID: 8 at kernel/workqueue.c:2623 check_flush_dependency+0xb5/0x130 [ 14.506390] CPU: 0 PID: 8 Comm: kworker/u4:0 Not tainted 5.4.0-1086-azure #91~18.04.1-Ubuntu [ 14.506391] Hardware name: Microsoft Corporation Virtual Machine/Virtual Machine, BIOS Hyper-V UEFI Release v4.1 05/09/2022 [ 14.506393] Workqueue: storvsc_error_wq_0 storvsc_remove_lun [ 14.506395] RIP: 0010:check_flush_dependency+0xb5/0x130 [ 14.506408] Call Trace: [ 14.506412] __flush_work+0xf1/0x1c0 [ 14.506414] __cancel_work_timer+0x12f/0x1b0 [ 14.506417] ? kernfs_put+0xf0/0x190 [ 14.506418] cancel_delayed_work_sync+0x13/0x20 [ 14.506420] disk_block_events+0x78/0x80 [ 14.506421] del_gendisk+0x3d/0x2f0 [ 14.506423] sr_remove+0x28/0x70 [ 14.506427] device_release_driver_internal+0xef/0x1c0 [ 14.506428] device_release_driver+0x12/0x20 [ 14.506429] bus_remove_device+0xe1/0x150 [ 14.506431] device_del+0x167/0x380 [ 14.506432] __scsi_remove_device+0x11d/0x150 [ 14.506433] scsi_remove_device+0x26/0x40 [ 14.506434] storvsc_remove_lun+0x40/0x60 [ 14.506436] process_one_work+0x209/0x400 [ 14.506437] worker_thread+0x34/0x400 [ 14.506439] kthread+0x121/0x140 [ 14.506440] ? process_one_work+0x400/0x400 [ 14.506441] ? kthread_park+0x90/0x90 [ 14.506443] ret_from_fork+0x35/0x40 [ 14.506445] ---[ end trace 2d9633159fdc6ee7 ]---

Affected

18 ranges
VendorProductVersion rangeFixed in
debianlinux< linux 6.0.2-1 (bookworm)linux 6.0.2-1 (bookworm)
linuxlinux——
linuxlinux>= 436ad941335386c5fc7faa915a8fbdfe8c908084 < b692c238ddfa61f00d97c4c1f021425d132ba96fb692c238ddfa61f00d97c4c1f021425d132ba96f
linuxlinux>= 436ad941335386c5fc7faa915a8fbdfe8c908084 < b4c928ace9a123629eeb14ec5d7ee8f73e5ac668b4c928ace9a123629eeb14ec5d7ee8f73e5ac668
linuxlinux>= 436ad941335386c5fc7faa915a8fbdfe8c908084 < 46fcb0fc884db78a0384be92cc2a51927e6581b846fcb0fc884db78a0384be92cc2a51927e6581b8
linuxlinux>= 436ad941335386c5fc7faa915a8fbdfe8c908084 < cd2a50d0a097a42b6de283377da98ff757505120cd2a50d0a097a42b6de283377da98ff757505120
linuxlinux>= 436ad941335386c5fc7faa915a8fbdfe8c908084 < 828f57ac75eaccd6607ee4d1468d34e983e32c68828f57ac75eaccd6607ee4d1468d34e983e32c68
linuxlinux>= 436ad941335386c5fc7faa915a8fbdfe8c908084 < d957e7ffb2c72410bcc1a514153a46719255a5dad957e7ffb2c72410bcc1a514153a46719255a5da
linuxlinux_kernel——
linuxlinux_kernel>= 0 < 5.10.140-15.10.140-1
linuxlinux_kernel>= 0 < 6.0.2-16.0.2-1
linuxlinux_kernel>= 0 < 6.0.2-16.0.2-1
linuxlinux_kernel>= 0 < 6.0.2-16.0.2-1
linuxlinux_kernel>= 4.15 < 4.19.2574.19.257
linuxlinux_kernel>= 4.20 < 5.4.2125.4.212
linuxlinux_kernel>= 5.11 < 5.15.645.15.64
linuxlinux_kernel>= 5.16 < 5.19.65.19.6
linuxlinux_kernel>= 5.5 < 5.10.1405.10.140

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
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