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CVE-2022-50505— iommu/amd: Fix pci device refcount leak in ppr_notifier()

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，该漏洞源于未正确释放PCI设备引用计数，可能导致内存泄漏。

AI Predicted 3.3 Difficulty: Trivial EPSS 0.16% · P5

Possible ATT&CK Techniques 1 AI

T1068 · Exploitation for Privilege Escalation

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux daae2d25a4779b272a66ddd01f5810bcee822b9e< bdb2113dd8f17a3cc84a2b4be4968a849f69ec72 affected
daae2d25a4779b272a66ddd01f5810bcee822b9e< efd50c65fd1cdef63eb58825f3fe72496443764c affected
daae2d25a4779b272a66ddd01f5810bcee822b9e< 8581ec1feb895ff596fe3d326d9ba320083290aa affected
daae2d25a4779b272a66ddd01f5810bcee822b9e< 03f51c72997559e73b327608f0cccfded715c9a0 affected
daae2d25a4779b272a66ddd01f5810bcee822b9e< 6e501b3fd7a2e1c4372d72bc70717aaca2beb8a5 affected
daae2d25a4779b272a66ddd01f5810bcee822b9e< 902cc2507091a81643502d8ceb0e2f105e902518 affected
daae2d25a4779b272a66ddd01f5810bcee822b9e< b0637f4bd426925f5c3a15e8f8e36190fe06bac5 affected
daae2d25a4779b272a66ddd01f5810bcee822b9e< 6cf0981c2233f97d56938d9d61845383d6eb227c affected
… +10 more rows
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I. Basic Information for CVE-2022-50505

Vulnerability Information
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Vulnerability Title
iommu/amd: Fix pci device refcount leak in ppr_notifier()
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: iommu/amd: Fix pci device refcount leak in ppr_notifier() As comment of pci_get_domain_bus_and_slot() says, it returns a pci device with refcount increment, when finish using it, the caller must decrement the reference count by calling pci_dev_put(). So call it before returning from ppr_notifier() to avoid refcount 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，该漏洞源于未正确释放PCI设备引用计数，可能导致内存泄漏。
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 daae2d25a4779b272a66ddd01f5810bcee822b9e ~ bdb2113dd8f17a3cc84a2b4be4968a849f69ec72 -
Linux Linux 4.14 -

II. Public POCs for CVE-2022-50505

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III. Intelligence Information for CVE-2022-50505

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Patches & Fixes for CVE-2022-50505 (7)

Other References for CVE-2022-50505 (1)

Same Patch Batch · Linux · 2025-10-04 · 144 CVEs total

CVE-2025-39932 9.8 CRITICAL smb: client: let smbd_destroy() call disable_work_sync(&info->post_send_credits_work)
CVE-2025-39948 9.8 CRITICAL ice: fix Rx page leak on multi-buffer frames
CVE-2025-39946 9.8 CRITICAL tls: make sure to abort the stream if headers are bogus
CVE-2025-39933 9.4 CRITICAL smb: client: let recv_done verify data_offset, data_length and remaining_data_length
CVE-2025-39943 9.4 CRITICAL ksmbd: smbdirect: validate data_offset and data_length field of smb_direct_data_transfer
CVE-2023-53600 9.1 CRITICAL tunnels: fix kasan splat when generating ipv4 pmtu error
CVE-2023-53615 8.8 HIGH scsi: qla2xxx: Fix deletion race condition
CVE-2025-39952 8.8 HIGH wifi: wilc1000: avoid buffer overflow in WID string configuration
CVE-2023-53589 8.8 HIGH wifi: iwlwifi: mvm: don't trust firmware n_channels
CVE-2023-53586 8.8 HIGH scsi: target: Fix multiple LUN_RESET handling
CVE-2022-50493 8.8 HIGH scsi: qla2xxx: Fix crash when I/O abort times out
CVE-2023-53598 8.4 HIGH bus: mhi: host: Range check CHDBOFF and ERDBOFF
CVE-2023-53566 7.8 HIGH netfilter: nft_set_rbtree: fix null deref on element insertion
CVE-2023-53536 7.8 HIGH blk-crypto: make blk_crypto_evict_key() more robust
CVE-2023-53560 7.8 HIGH tracing/histograms: Add histograms to hist_vars if they have referenced variables
CVE-2023-53559 7.8 HIGH ip_vti: fix potential slab-use-after-free in decode_session6
CVE-2023-53557 7.8 HIGH fprobe: Release rethook after the ftrace_ops is unregistered
CVE-2023-53537 7.8 HIGH f2fs: fix to avoid use-after-free for cached IPU bio
CVE-2023-53539 7.8 HIGH RDMA/rxe: Fix incomplete state save in rxe_requester
CVE-2023-53545 7.8 HIGH drm/amdgpu: unmap and remove csa_va properly

Showing top 20 of 144 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2022-50505

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