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CVE-2025-37836— PCI: Fix reference leak in pci_register_host_bridge()

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pci_register_host_bridge中未正确处理设备注册失败导致内存泄漏。

AI Predicted 5.3 Difficulty: Trivial EPSS 0.31% · P23

Possible ATT&CK Techniques 1 AI

T1562.008

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux 37d6a0a6f4700ad3ae7bbf8db38b4557e97b3fe4< f4db1b2c9ae3d013733c302ee70cac943b7070c0 affected
37d6a0a6f4700ad3ae7bbf8db38b4557e97b3fe4< 3297497ad2246eb9243849bfbbc57a0dea97d76e affected
37d6a0a6f4700ad3ae7bbf8db38b4557e97b3fe4< b783478e0c53ffb4f04f25fb4e21ef7f482b05df affected
37d6a0a6f4700ad3ae7bbf8db38b4557e97b3fe4< bd2a352a0d72575f1842d28c14c10089f0cfe1ae affected
37d6a0a6f4700ad3ae7bbf8db38b4557e97b3fe4< 9707d0c932f41006a2701afc926b232b50e356b4 affected
37d6a0a6f4700ad3ae7bbf8db38b4557e97b3fe4< bbba4c50a2d2a1d3f3bf31cc4b8280cb492bf2c7 affected
37d6a0a6f4700ad3ae7bbf8db38b4557e97b3fe4< f9208aec86226524ec1cb68a09ac70e974ea6536 affected
37d6a0a6f4700ad3ae7bbf8db38b4557e97b3fe4< 804443c1f27883926de94c849d91f5b7d7d696e9 affected
… +10 more rows
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I. Basic Information for CVE-2025-37836

Vulnerability Information
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Vulnerability Title
PCI: Fix reference leak in pci_register_host_bridge()
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: PCI: Fix reference leak in pci_register_host_bridge() If device_register() fails, call put_device() to give up the reference to avoid a memory leak, per the comment at device_register(). Found by code review. [bhelgaas: squash Dan Carpenter's double free fix from https://lore.kernel.org/r/db806a6c-a91b-4e5a-a84b-6b7e01bdac85@stanley.mountain]
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pci_register_host_bridge中未正确处理设备注册失败导致内存泄漏。
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 37d6a0a6f4700ad3ae7bbf8db38b4557e97b3fe4 ~ f4db1b2c9ae3d013733c302ee70cac943b7070c0 -
Linux Linux 4.10 -

II. Public POCs for CVE-2025-37836

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III. Intelligence Information for CVE-2025-37836

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Same Patch Batch · Linux · 2025-05-09 · 52 CVEs total

CVE-2025-37879 9.8 CRITICAL 9p/net: fix improper handling of bogus negative read/write replies
CVE-2025-37885 8.8 HIGH KVM: x86: Reset IRTE to host control if *new* route isn't postable
CVE-2025-37849 8.8 HIGH KVM: arm64: Tear down vGIC on failed vCPU creation
CVE-2025-37869 7.8 HIGH drm/xe: Use local fence in error path of xe_migrate_clear
CVE-2025-37886 7.8 HIGH pds_core: make wait_context part of q_info
CVE-2025-37856 7.8 HIGH btrfs: harden block_group::bg_list against list_del() races
CVE-2025-37845 7.8 HIGH tracing: fprobe events: Fix possible UAF on modules
CVE-2025-37882 7.8 HIGH usb: xhci: Fix isochronous Ring Underrun/Overrun event handling
CVE-2025-37861 7.8 HIGH scsi: mpi3mr: Synchronous access b/w reset and tm thread for reply queue
CVE-2025-37873 7.8 HIGH eth: bnxt: fix missing ring index trim on error path
CVE-2025-37854 7.8 HIGH drm/amdkfd: Fix mode1 reset crash issue
CVE-2025-37871 7.5 HIGH nfsd: decrease sc_count directly if fail to queue dl_recall
CVE-2025-37887 7.1 HIGH pds_core: handle unsupported PDS_CORE_CMD_FW_CONTROL result
CVE-2025-37876 7.0 HIGH netfs: Only create /proc/fs/netfs with CONFIG_PROC_FS
CVE-2025-37872 net: txgbe: fix memory leak in txgbe_probe() error path
CVE-2025-37888 net/mlx5: Fix null-ptr-deref in mlx5_create_{inner_,}ttc_table()
CVE-2025-37874 net: ngbe: fix memory leak in ngbe_probe() error path
CVE-2025-37878 perf/core: Fix WARN_ON(!ctx) in __free_event() for partial init
CVE-2025-37870 drm/amd/display: prevent hang on link training fail
CVE-2025-37868 drm/xe/userptr: fix notifier vs folio deadlock

Showing top 20 of 52 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2025-37836

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