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Improper Input Validation The advisory has been revoked - it doesn't affect any version of package kernel-tools-libs-devel  (opens in a new tab)

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0.04% (13th percentile)

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  • Snyk IDSNYK-CENTOS7-KERNELTOOLSLIBSDEVEL-6465717
  • published19 Mar 2024
  • disclosed18 Mar 2024
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Introduced: 18 Mar 2024

CVE-2023-52617  (opens in a new tab)
CWE-20  (opens in a new tab)

Amendment

The Centos security team deemed this advisory irrelevant for Centos:7.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-tools-libs-devel package and not the kernel-tools-libs-devel package as distributed by Centos.

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

PCI: switchtec: Fix stdev_release() crash after surprise hot remove

A PCI device hot removal may occur while stdev->cdev is held open. The call to stdev_release() then happens during close or exit, at a point way past switchtec_pci_remove(). Otherwise the last ref would vanish with the trailing put_device(), just before return.

At that later point in time, the devm cleanup has already removed the stdev->mmio_mrpc mapping. Also, the stdev->pdev reference was not a counted one. Therefore, in DMA mode, the iowrite32() in stdev_release() will cause a fatal page fault, and the subsequent dma_free_coherent(), if reached, would pass a stale &stdev->pdev->dev pointer.

Fix by moving MRPC DMA shutdown into switchtec_pci_remove(), after stdev_kill(). Counting the stdev->pdev ref is now optional, but may prevent future accidents.

Reproducible via the script at https://lore.kernel.org/r/20231113212150.96410-1-dns@arista.com