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CVE-2022-50552— blk-mq: use quiesced elevator switch when reinitializing queues

Quick assessment

Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于硬件队列重新初始化时未使用静默电梯切换，可能导致释放后重用。

AI Predicted 7.8 Difficulty: Moderate EPSS 0.21% · P11

Possible ATT&CK Techniques 1 AI

T1068 · Exploitation for Privilege Escalation

Affected Version Matrix 12

VendorProduct Version RangeStatus
Linux Linux d48ece209f82c9ce07be942441b53d3fa3664936< 0f90015383cd3f1128bebfbe7a97122d97808046 affected
d48ece209f82c9ce07be942441b53d3fa3664936< 9646443f28f33ec545ae303e613c3f476fad4dc1 affected
d48ece209f82c9ce07be942441b53d3fa3664936< 63a681bcc32a43528ce0f690569f7f48e59c3963 affected
d48ece209f82c9ce07be942441b53d3fa3664936< c478b3b2900f1834cf9eda5bfef0d5696099505d affected
d48ece209f82c9ce07be942441b53d3fa3664936< 8237c01f1696bc53c470493bf1fe092a107648a6 affected
4.19 affected
< 4.19 unaffected
5.10.258≤ 5.10.* unaffected
… +4 more rows
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I. Basic Information for CVE-2022-50552

Vulnerability Information
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Vulnerability Title
blk-mq: use quiesced elevator switch when reinitializing queues
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: blk-mq: use quiesced elevator switch when reinitializing queues The hctx's run_work may be racing with the elevator switch when reinitializing hardware queues. The queue is merely frozen in this context, but that only prevents requests from allocating and doesn't stop the hctx work from running. The work may get an elevator pointer that's being torn down, and can result in use-after-free errors and kernel panics (example below). Use the quiesced elevator switch instead, and make the previous one static since it is now only used locally. nvme nvme0: resetting controller nvme nvme0: 32/0/0 default/read/poll queues BUG: kernel NULL pointer dereference, address: 0000000000000008 #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 80000020c8861067 P4D 80000020c8861067 PUD 250f8c8067 PMD 0 Oops: 0000 [#1] SMP PTI Workqueue: kblockd blk_mq_run_work_fn RIP: 0010:kyber_has_work+0x29/0x70 ... Call Trace: __blk_mq_do_dispatch_sched+0x83/0x2b0 __blk_mq_sched_dispatch_requests+0x12e/0x170 blk_mq_sched_dispatch_requests+0x30/0x60 __blk_mq_run_hw_queue+0x2b/0x50 process_one_work+0x1ef/0x380 worker_thread+0x2d/0x3e0
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于硬件队列重新初始化时未使用静默电梯切换，可能导致释放后重用。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Linux Linux d48ece209f82c9ce07be942441b53d3fa3664936 ~ 0f90015383cd3f1128bebfbe7a97122d97808046 -
Linux Linux 4.19 -

II. Public POCs for CVE-2022-50552

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III. Intelligence Information for CVE-2022-50552

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Patches & Fixes for CVE-2022-50552 (5)

Same Patch Batch · Linux · 2025-10-07 · 118 CVEs total

CVE-2023-53629 9.8 CRITICAL fs: dlm: fix use after free in midcomms commit
CVE-2023-53630 8.8 HIGH iommufd: Fix unpinning of pages when an access is present
CVE-2023-53676 8.8 HIGH scsi: target: iscsi: Fix buffer overflow in lio_target_nacl_info_show()
CVE-2023-53675 8.8 HIGH scsi: ses: Fix possible desc_ptr out-of-bounds accesses
CVE-2023-53673 8.8 HIGH Bluetooth: hci_event: call disconnect callback before deleting conn
CVE-2023-53679 8.3 HIGH wifi: mt7601u: fix an integer underflow
CVE-2023-53635 8.2 HIGH netfilter: conntrack: fix wrong ct->timeout value
CVE-2022-50555 7.8 HIGH tipc: fix a null-ptr-deref in tipc_topsrv_accept
CVE-2023-53659 7.8 HIGH iavf: Fix out-of-bounds when setting channels on remove
CVE-2023-53619 7.8 HIGH netfilter: conntrack: Avoid nf_ct_helper_hash uses after free
CVE-2023-53660 7.8 HIGH bpf, cpumap: Handle skb as well when clean up ptr_ring
CVE-2023-53643 7.8 HIGH nvme-tcp: don't access released socket during error recovery
CVE-2023-53645 7.8 HIGH bpf: Make bpf_refcount_acquire fallible for non-owning refs
CVE-2023-53646 7.8 HIGH drm/i915/perf: add sentinel to xehp_oa_b_counters
CVE-2023-53669 7.8 HIGH tcp: fix skb_copy_ubufs() vs BIG TCP
CVE-2023-53626 7.8 HIGH ext4: fix possible double unlock when moving a directory
CVE-2023-53627 7.8 HIGH scsi: hisi_sas: Grab sas_dev lock when traversing the members of sas_dev.list
CVE-2022-50528 7.8 HIGH drm/amdkfd: Fix memory leakage
CVE-2023-53683 7.8 HIGH fs: hfsplus: remove WARN_ON() from hfsplus_cat_{read,write}_inode()
CVE-2022-50518 7.8 HIGH parisc: Fix locking in pdc_iodc_print() firmware call

Showing top 20 of 118 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2022-50552

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