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CVE-2024-26810— vfio/pci: Lock external INTx masking ops

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 vfio/pci 中存在安全问题，通过配置空间更改 DisINTx 的掩码可能会与 INTx 竞争。

CVSS 7.8 · High EPSS 0.20% · P9

Possible ATT&CK Techniques 1 AI

T1557 · Adversary-in-the-Middle

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux 89e1f7d4c66d85f42c3d52ea3866eb10cadf6153< 1e71b6449d55179170efc8dee8664510bb813b42 affected
89e1f7d4c66d85f42c3d52ea3866eb10cadf6153< 3dd9be6cb55e0f47544e7cdda486413f7134e3b3 affected
89e1f7d4c66d85f42c3d52ea3866eb10cadf6153< ec73e079729258a05452356cf6d098bf1504d5a6 affected
89e1f7d4c66d85f42c3d52ea3866eb10cadf6153< 3fe0ac10bd117df847c93408a9d428a453cd60e5 affected
89e1f7d4c66d85f42c3d52ea3866eb10cadf6153< 04a4a017b9ffd7b0f427b8c376688d14cb614651 affected
89e1f7d4c66d85f42c3d52ea3866eb10cadf6153< 6fe478d855b20ac1eb5da724afe16af5a2aaaa40 affected
89e1f7d4c66d85f42c3d52ea3866eb10cadf6153< 03505e3344b0576fd619416793a31eae9c5b73bf affected
89e1f7d4c66d85f42c3d52ea3866eb10cadf6153< 810cd4bb53456d0503cc4e7934e063835152c1b7 affected
… +10 more rows
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I. Basic Information for CVE-2024-26810

Vulnerability Information
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Vulnerability Title
vfio/pci: Lock external INTx masking ops
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: vfio/pci: Lock external INTx masking ops Mask operations through config space changes to DisINTx may race INTx configuration changes via ioctl. Create wrappers that add locking for paths outside of the core interrupt code. In particular, irq_type is updated holding igate, therefore testing is_intx() requires holding igate. For example clearing DisINTx from config space can otherwise race changes of the interrupt configuration. This aligns interfaces which may trigger the INTx eventfd into two camps, one side serialized by igate and the other only enabled while INTx is configured. A subsequent patch introduces synchronization for the latter flows.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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 vfio/pci 中存在安全问题，通过配置空间更改 DisINTx 的掩码可能会与 INTx 竞争。
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 89e1f7d4c66d85f42c3d52ea3866eb10cadf6153 ~ 1e71b6449d55179170efc8dee8664510bb813b42 -
Linux Linux 3.6 -

II. Public POCs for CVE-2024-26810

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III. Intelligence Information for CVE-2024-26810

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Mailing List Discussions for CVE-2024-26810 (1)

Other References for CVE-2024-26810 (7)

Same Patch Batch · Linux · 2024-04-05 · 5 CVEs total

CVE-2024-26812 7.8 HIGH vfio/pci: Create persistent INTx handler
CVE-2024-27437 vfio/pci: Disable auto-enable of exclusive INTx IRQ
CVE-2024-26814 vfio/fsl-mc: Block calling interrupt handler without trigger
CVE-2024-26813 vfio/platform: Create persistent IRQ handlers

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2024-26810

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