CVE-2024-26814
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…
Does this matter?
Lower severity and a low EPSS score (0.22%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 3.1
- 5.5 MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.22% probability · 13th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-476
- Affected
- linux/linux kernel · debian/debian linux
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/083e750c9f5f4c3bf61161330fb84d7c8e8bb417Patch
- https://git.kernel.org/stable/c/250219c6a556f8c69c5910fca05a59037e24147dPatch
- https://git.kernel.org/stable/c/6ec0d88166dac43f29e96801c0927d514f17add9Patch
- https://git.kernel.org/stable/c/7447d911af699a15f8d050dfcb7c680a86f87012Patch
- https://git.kernel.org/stable/c/a563fc18583ca4f42e2fdd0c70c7c618288e7edePatch
- https://git.kernel.org/stable/c/de87511fb0404d23b6da5f4660383b6ed095e28dPatch
- https://git.kernel.org/stable/c/ee0bd4ad780dfbb60355b99f25063357ab488267Patch
- https://git.kernel.org/stable/c/083e750c9f5f4c3bf61161330fb84d7c8e8bb417Patch
- https://git.kernel.org/stable/c/250219c6a556f8c69c5910fca05a59037e24147dPatch
- https://git.kernel.org/stable/c/6ec0d88166dac43f29e96801c0927d514f17add9Patch
- https://git.kernel.org/stable/c/7447d911af699a15f8d050dfcb7c680a86f87012Patch
- https://git.kernel.org/stable/c/a563fc18583ca4f42e2fdd0c70c7c618288e7edePatch
- https://git.kernel.org/stable/c/de87511fb0404d23b6da5f4660383b6ed095e28dPatch
- https://git.kernel.org/stable/c/ee0bd4ad780dfbb60355b99f25063357ab488267Patch
- https://lists.debian.org/debian-lts-announce/2024/06/msg00017.htmlMailing List
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.