Riskcovery

CVE-2024-26814

vfio/fsl-mc: Block calling interrupt handler without trigger

State
Published
Severity
Not scored
Published
Apr 5, 2024
Updated
May 11, 2026
Reserved
Feb 19, 2024

Read the record on cve.org

Description

In the Linux kernel, the following vulnerability has been resolved:

vfio/fsl-mc: Block calling interrupt handler without trigger

The eventfd_ctx trigger pointer of the vfio_fsl_mc_irq object is initially NULL and may become NULL if the user sets the trigger eventfd to -1. The interrupt handler itself is guaranteed that trigger is always valid between request_irq() and free_irq(), but the loopback testing mechanisms to invoke the handler function need to test the trigger. The triggering and setting ioctl paths both make use of igate and are therefore mutually exclusive.

The vfio-fsl-mc driver does not make use of irqfds, nor does it support any sort of masking operations, therefore unlike vfio-pci and vfio-platform, the flow can remain essentially unchanged.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

ProductVersions
LinuxLinux
  • cc0ee20bd96971c10eba9a83ecf1c0733078a083 to before a563fc18583ca4f42e2fdd0c70c7c618288e7edeAffected
  • cc0ee20bd96971c10eba9a83ecf1c0733078a083 to before 250219c6a556f8c69c5910fca05a59037e24147dAffected
  • cc0ee20bd96971c10eba9a83ecf1c0733078a083 to before 083e750c9f5f4c3bf61161330fb84d7c8e8bb417Affected
  • cc0ee20bd96971c10eba9a83ecf1c0733078a083 to before ee0bd4ad780dfbb60355b99f25063357ab488267Affected
  • cc0ee20bd96971c10eba9a83ecf1c0733078a083 to before de87511fb0404d23b6da5f4660383b6ed095e28dAffected
  • cc0ee20bd96971c10eba9a83ecf1c0733078a083 to before 6ec0d88166dac43f29e96801c0927d514f17add9Affected
  • cc0ee20bd96971c10eba9a83ecf1c0733078a083 to before 7447d911af699a15f8d050dfcb7c680a86f87012Affected
LinuxLinux
  • 5.10Affected
  • before 5.10Not affected
  • 5.10.215 through 5.10.*Not affected
  • 5.15.154 through 5.15.*Not affected
  • 6.1.84 through 6.1.*Not affected
  • 6.6.24 through 6.6.*Not affected
  • 6.7.12 through 6.7.*Not affected
  • 6.8.3 through 6.8.*Not affected
  • 6.9 and laterNot affected

References

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