CVE-2022-50337: linux kernel — Fix

Description

In the Linux kernel, the following vulnerability has been resolved: ocxl: fix pci device refcount leak when calling get_function_0() get_function_0() calls pci_get_domain_bus_and_slot(), as comment says, it returns a pci device with refcount increment, so after using it, pci_dev_put() needs be called. Get the device reference when get_function_0() is not called, so pci_dev_put() can be called in the error path and callers unconditionally. And add comment above get_dvsec_vendor0() to tell callers to call pci_dev_put().

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CVSS v3.1 Score

5.5

MEDIUM

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected Products

Vendor	Product	Versions
linux	linux_kernel	5.9 — 5.10.163
linux	linux_kernel	5.11 — 5.15.86
linux	linux_kernel	5.16 — 6.0.16
linux	linux_kernel	6.1 — 6.1.2

References

Advisories & Patches

https://git.kernel.org/stable/c/27158c72678b39ee01cc01de1aba6b51c71abe2f https://git.kernel.org/stable/c/37a13b274e4513c757e50c002ddcbf4bc89adbb2 https://git.kernel.org/stable/c/40ff4c2335a98f0ee96b099bfd70b8e6644f321f https://git.kernel.org/stable/c/9a1b3148975b71fdc194e62612478346bbe618cd https://git.kernel.org/stable/c/a40e1b0a922a53fa925ea8b296e3de30a31ed028

Frequently Asked Questions

What is CVE-2022-50337? +

In the Linux kernel, the following vulnerability has been resolved: ocxl: fix pci device refcount leak when calling get_function_0() get_function_0() calls pci_get_domain_bus_and_slot(), as comment says, it returns a pci device with refcount increment, so after using it, pci_dev_put() needs be called. Get the device reference when get_function_0() is not called, so pci_dev_put() can be called in the error path and callers unconditionally. And add comment above get_dvsec_vendor0() to tell callers to call pci_dev_put(). It has a CVSS v3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2022-50337? +

CVE-2022-50337 has a CVSS v3.1 score of 5.5 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2022-50337? +

CVE-2022-50337 affects products from linux, specifically: linux_kernel. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2022-50337? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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CVE-2022-50337