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CVE-2022-50659— hwrng: geode - Fix PCI device refcount leak

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geode hwrng PCI设备引用计数泄漏。

AI Predicted 3.3 Difficulty: Easy EPSS 0.28% · P19

Possible ATT&CK Techniques 1 AI

T1562.001

Affected Version Matrix 20

VendorProduct Version RangeStatus
Linux Linux ef5d862734b84239e0140319a95fb0bbff5ef394< 88f4ea623f59155280d99d1a59a968f838472c4a affected
ef5d862734b84239e0140319a95fb0bbff5ef394< e2f44baf62567c5cfbc274974c7d96dddad53ccc affected
ef5d862734b84239e0140319a95fb0bbff5ef394< 6b9e43c4098f1310f5b4d52121d007a219fa5d43 affected
ef5d862734b84239e0140319a95fb0bbff5ef394< 5cc818ad53df650cac8fb41d9066665366af3f03 affected
ef5d862734b84239e0140319a95fb0bbff5ef394< aa96aff394a511cc7bb7df08d1b8504d4d97671e affected
ef5d862734b84239e0140319a95fb0bbff5ef394< 82bd423ed977847652b2048b0f8dcf049b1847a9 affected
ef5d862734b84239e0140319a95fb0bbff5ef394< 874f798c2db5ad595e46982d7f727a679dacb048 affected
ef5d862734b84239e0140319a95fb0bbff5ef394< 19b7b85773b18457ff85a9ff4f5e2a2d4bf7ed0c affected
… +12 more rows
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I. Basic Information for CVE-2022-50659

Vulnerability Information
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Vulnerability Title
hwrng: geode - Fix PCI device refcount leak
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: hwrng: geode - Fix PCI device refcount leak for_each_pci_dev() is implemented by pci_get_device(). The comment of pci_get_device() says that it will increase the reference count for the returned pci_dev and also decrease the reference count for the input pci_dev @from if it is not NULL. If we break for_each_pci_dev() loop with pdev not NULL, we need to call pci_dev_put() to decrease the reference count. We add a new struct 'amd_geode_priv' to record pointer of the pci_dev and membase, and then add missing pci_dev_put() for the normal and error path.
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geode hwrng PCI设备引用计数泄漏。
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 ef5d862734b84239e0140319a95fb0bbff5ef394 ~ 88f4ea623f59155280d99d1a59a968f838472c4a -
Linux Linux 2.6.18 -

II. Public POCs for CVE-2022-50659

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III. Intelligence Information for CVE-2022-50659

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Same Patch Batch · Linux · 2025-12-09 · 152 CVEs total

CVE-2022-50666 9.8 CRITICAL RDMA/siw: Fix QP destroy to wait for all references dropped.
CVE-2025-40343 9.8 CRITICAL nvmet-fc: avoid scheduling association deletion twice
CVE-2023-53794 9.8 CRITICAL cifs: fix session state check in reconnect to avoid use-after-free issue
CVE-2025-40342 8.8 HIGH nvme-fc: use lock accessing port_state and rport state
CVE-2023-53822 8.8 HIGH wifi: ath11k: Ignore frags from uninitialized peer in dp.
CVE-2023-53785 8.8 HIGH mt76: mt7921: don't assume adequate headroom for SDIO headers
CVE-2025-40336 8.8 HIGH drm/gpusvm: fix hmm_pfn_to_map_order() usage
CVE-2023-53827 8.8 HIGH Bluetooth: L2CAP: Fix use-after-free in l2cap_disconnect_{req,rsp}
CVE-2025-40328 8.8 HIGH smb: client: fix potential UAF in smb2_close_cached_fid()
CVE-2023-53851 8.4 HIGH drm/msm/dp: Drop aux devices together with DP controller
CVE-2025-40337 8.2 HIGH net: stmmac: Correctly handle Rx checksum offload errors
CVE-2022-50656 8.1 HIGH nfc: pn533: Clear nfc_target before being used
CVE-2023-53803 8.1 HIGH scsi: ses: Fix slab-out-of-bounds in ses_enclosure_data_process()
CVE-2023-53800 7.8 HIGH ubi: Fix use-after-free when volume resizing failed
CVE-2023-53860 7.8 HIGH dm: don't attempt to queue IO under RCU protection
CVE-2023-53829 7.8 HIGH f2fs: flush inode if atomic file is aborted
CVE-2023-53790 7.8 HIGH bpf: Zeroing allocated object from slab in bpf memory allocator
CVE-2023-53836 7.8 HIGH bpf, sockmap: Fix skb refcnt race after locking changes
CVE-2023-53844 7.8 HIGH drm/ttm: Don't leak a resource on swapout move error
CVE-2023-53846 7.8 HIGH f2fs: fix to do sanity check on direct node in truncate_dnode()

Showing top 20 of 152 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2022-50659

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