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CVE-2022-48896: ixgbe: fix pci device refcount leak

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-08-21 · updated 2026-06-17
• Weakness: CWE-401

Description

In the Linux kernel, the following vulnerability has been resolved: ixgbe: fix pci device refcount leak As the comment of pci_get_domain_bus_and_slot() says, it returns a PCI device with refcount incremented, when finish using it, the caller must decrement the reference count by calling pci_dev_put(). In ixgbe_get_first_secondary_devfn() and ixgbe_x550em_a_has_mii(), pci_dev_put() is called to avoid leak.

Affected products

• Linux kernel: from 5.0 before 5.4.229; from 5.5 before 5.10.164; from 5.11 before 5.15.89; from 5.16 before 6.1.7; 6.2-rc1, 6.2-rc2, 6.2-rc3 — fixed in 5.10.164, 5.15.89, 5.4.229, 6.1.7

How to fix

Upgrade to a fixed version: Linux kernel 5.10.164, 5.15.89, 5.4.229, 6.1.7. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/112df4cd2b09acd64bcd18f5ef83ba5d07b34bf0
• https://git.kernel.org/stable/c/4c93422a54cd6a349988f42e1c6bf082cf4ea9d8
• https://git.kernel.org/stable/c/53cefa802f070d46c0c518f4865be2c749818a18
• https://git.kernel.org/stable/c/b93fb4405fcb5112c5739c5349afb52ec7f15c07
• https://git.kernel.org/stable/c/c49996c6aa03590e4ef5add8772cb6068d99fd59

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