Debian: CVE-2022-49000: linux -- security update

Debian: CVE-2022-49000: linux -- security update

Severity

5

CVSS

(AV:L/AC:L/Au:S/C:N/I:N/A:C)

Published

10/23/2024

Created

10/24/2024

Added

10/23/2024

Modified

01/30/2025

Description

In the Linux kernel, the following vulnerability has been resolved: iommu/vt-d: Fix PCI device refcount leak in has_external_pci() for_each_pci_dev() is implemented by pci_get_device(). The comment of pci_get_device() says that it will increase the reference count for the returned pci_dev and also decrease the reference count for the input pci_dev @from if it is not NULL. If we break for_each_pci_dev() loop with pdev not NULL, we need to call pci_dev_put() to decrease the reference count. Add the missing pci_dev_put() before 'return true' to avoid reference count leak.

Solution(s)

• debian-upgrade-linux

References

• https://attackerkb.com/topics/cve-2022-49000
• CVE - 2022-49000