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CVE-2022-50820— perf/arm_dmc620: Fix hotplug callback leak in dmc620_pmu_init()

AI Predicted 5.5 Difficulty: Theoretical EPSS 0.21% · P12

Possible ATT&CK Techniques 1AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 10

VendorProductVersion RangeStatus
LinuxLinux53c218da220c3619b5befec4674ffa35d590092a< b99fbe8d949a99fe456f08c7aad421327685aa50affected
53c218da220c3619b5befec4674ffa35d590092a< af170afa97e50d4169cfaa7ff4ec5d3841182641affected
53c218da220c3619b5befec4674ffa35d590092a< adf7c3bbcc819db6e95b6a61c9822230f0ef4778affected
53c218da220c3619b5befec4674ffa35d590092a< d9f564c966e63925aac4ba273a9319d7fb6f4b4eaffected
5.11affected
< 5.11unaffected
5.15.86≤ 5.15.*unaffected
6.0.16≤ 6.0.*unaffected
… +2 more rows
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I. Basic Information for CVE-2022-50820

Vulnerability Information
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Vulnerability Title
perf/arm_dmc620: Fix hotplug callback leak in dmc620_pmu_init()
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: perf/arm_dmc620: Fix hotplug callback leak in dmc620_pmu_init() dmc620_pmu_init() won't remove the callback added by cpuhp_setup_state_multi() when platform_driver_register() failed. Remove the callback by cpuhp_remove_multi_state() in fail path. Similar to the handling of arm_ccn_init() in commit 26242b330093 ("bus: arm-ccn: Prevent hotplug callback leak")
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dmc620_pmu_init函数存在热插拔回调泄漏，可能导致回调未移除。
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

VendorProductAffected VersionsCPESubscribe
LinuxLinux 53c218da220c3619b5befec4674ffa35d590092a ~ b99fbe8d949a99fe456f08c7aad421327685aa50 -
LinuxLinux 5.11 -

II. Public POCs for CVE-2022-50820

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III. Intelligence Information for CVE-2022-50820

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Other References for CVE-2022-50820 (4)

Same Patch Batch · Linux · 2025-12-30 · 244 CVEs total

CVE-2023-541849.8 CRITICALscsi: target: iscsit: Free cmds before session free
CVE-2023-542239.8 CRITICALnet/mlx5e: xsk: Fix invalid buffer access for legacy rq
CVE-2023-542379.8 CRITICALnet/smc: fix potential panic dues to unprotected smc_llc_srv_add_link()
CVE-2023-542929.8 CRITICALRDMA/irdma: Fix data race on CQP request done
CVE-2023-542809.8 CRITICALcifs: fix potential race when tree connecting ipc
CVE-2023-542699.8 CRITICALSUNRPC: double free xprt_ctxt while still in use
CVE-2023-542589.8 CRITICALcifs: fix potential oops in cifs_oplock_break
CVE-2023-542579.8 CRITICALnet: macb: fix a memory corruption in extended buffer descriptor mode
CVE-2023-542039.1 CRITICALksmbd: fix slab-out-of-bounds in init_smb2_rsp_hdr
CVE-2023-543188.8 HIGHnet/smc: use smc_lgr_list.lock to protect smc_lgr_list.list iterate in smcr_port_add
CVE-2023-541628.8 HIGHksmbd: fix possible memory leak in smb2_lock()
CVE-2023-542148.8 HIGHBluetooth: L2CAP: Fix potential user-after-free
CVE-2022-508808.8 HIGHwifi: ath10k: add peer map clean up for peer delete in ath10k_sta_state()
CVE-2023-542628.8 HIGHnet/mlx5e: Don't clone flow post action attributes second time
CVE-2023-542508.2 HIGHksmbd: avoid out of bounds access in decode_preauth_ctxt()
CVE-2023-541648.0 HIGHBluetooth: ISO: fix iso_conn related locking and validity issues
CVE-2023-542027.8 HIGHdrm/i915: fix race condition UAF in i915_perf_add_config_ioctl
CVE-2023-543177.8 HIGHdm flakey: don't corrupt the zero page
CVE-2022-508417.8 HIGHfs/ntfs3: Add overflow check for attribute size
CVE-2023-542017.8 HIGHRDMA/efa: Fix wrong resources deallocation order

Showing top 20 of 244 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

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