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CVE-2026-93820— PCI: rockchip: Protect root bus removal with rescan lock

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.

在 Linux 内核中，已解决以下漏洞： PCI：rockchip：使用重新扫描锁保护根总线移除操作 在停止和移除根总线时，请持有 pci_rescan_remove_lock 锁，以避免与通过 sysfs 触发的并发重新扫描或热插拔操作发生竞争。此类竞争可能导致使用后释放（use-after-free）问题或系统崩溃。 [由 helgaas 提交日志]

AI Predicted 5.5 Difficulty: Moderate EPSS 0.17% · P6

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 16

VendorProduct Version RangeStatus
Linux Linux 073d3dbe9a7c38888d8dafe09df421b174a6cffa< 025308e7c9cd10112b73558c9f63f8f7285fa726 affected
073d3dbe9a7c38888d8dafe09df421b174a6cffa< ac47d42901859edb504a2890a3a5709c86dbc0c3 affected
073d3dbe9a7c38888d8dafe09df421b174a6cffa< eaeb9bed3641741aceb0add84a97023bed61e748 affected
073d3dbe9a7c38888d8dafe09df421b174a6cffa< 5d566ac3a055f0a6f4890ff0af7cfd7e8ed89652 affected
073d3dbe9a7c38888d8dafe09df421b174a6cffa< ebca7e5947720e9d4bd918af3e17720270c50744 affected
073d3dbe9a7c38888d8dafe09df421b174a6cffa< 9b19201f57d87c4d0777621275dbc59bff41b7f2 affected
073d3dbe9a7c38888d8dafe09df421b174a6cffa< 0bd9611587bb494c33566d825fe34b2705e4b167 affected
4.12 affected
… +8 more rows
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I. Basic Information for CVE-2026-93820

Vulnerability Information
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Vulnerability Title
PCI: rockchip: Protect root bus removal with rescan lock
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: PCI: rockchip: Protect root bus removal with rescan lock Hold the pci_rescan_remove_lock lock while stopping and removing a root bus to avoid racing with concurrent rescan or hotplug operations triggered via sysfs. Such races may lead to use-after-free issues or system crashes. [bhelgaas: commit log]
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

Affected Products

Vendor Product Affected Versions CPE Subscribe
Linux Linux 073d3dbe9a7c38888d8dafe09df421b174a6cffa ~ 025308e7c9cd10112b73558c9f63f8f7285fa726 -
Linux Linux 4.12 -

II. Public POCs for CVE-2026-93820

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III. Intelligence Information for CVE-2026-93820

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Patches & Fixes for CVE-2026-93820 (7)

Same Patch Batch · Linux · 2026-09-24 · 234 CVEs total

CVE-2026-93207 9.8 CRITICAL SUNRPC: Zero rpc_gss_wire_cred at svcauth_gss_decode_credbody() entry
CVE-2026-97413 9.8 CRITICAL RDMA/rtrs-srv: Fix integer underflow in process_read and process_write
CVE-2026-93228 9.1 CRITICAL svcrdma: Reject Write/Reply chunks with segcount 0
CVE-2026-93799 8.8 HIGH wifi: iwlwifi: mvm: validate sta_id in BA window status notif
CVE-2026-97442 8.8 HIGH wifi: ath11k: fix invalid data access in ath11k_dp_rx_h_undecap_nwifi
CVE-2026-97409 8.8 HIGH nvme-fc: Do not cancel requests in io target before it is initialized
CVE-2026-93806 8.8 HIGH wifi: cfg80211: validate assoc response length before status and IE access
CVE-2026-93793 8.8 HIGH wifi: iwlwifi: mvm: validate TX_CMD response layout
CVE-2026-93790 8.8 HIGH wifi: iwlwifi: mvm: fix out-of-bounds tid_data access in BA notif
CVE-2026-93284 8.8 HIGH drm/pagemap: dma-unmap pages before handling migration errors
CVE-2026-93280 8.8 HIGH greybus: audio: bound the topology section sizes against the fetched size
CVE-2026-97509 8.8 HIGH thunderbolt: Keep XDomain reference during the lifetime of a service
CVE-2026-93827 8.4 HIGH virtio-fs: avoid double-free on failed queue setup
CVE-2026-97450 8.4 HIGH ACPICA: validate handler object type in two places
CVE-2026-97452 8.4 HIGH ACPICA: Prevent adding invalid references
CVE-2026-97451 8.4 HIGH ACPICA: Fix integer overflow in acpi_ex_opcode_3A_1T_1R() (mid_op)
CVE-2026-97455 8.4 HIGH ACPICA: Fix use-after-free in acpi_ds_terminate_control_method()
CVE-2026-97433 8.2 HIGH nvme: validate FDP configuration descriptor sizes
CVE-2026-93787 8.1 HIGH smb: client: bound dirent name against end of SMB response in cifs_filldir
CVE-2026-93786 8.1 HIGH ksmbd: preserve VFS inherited POSIX ACL mask

Showing top 20 of 234 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-93820

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