CVE-2022-48807: linux kernel — Fix

Description

In the Linux kernel, the following vulnerability has been resolved: ice: Fix KASAN error in LAG NETDEV_UNREGISTER handler Currently, the same handler is called for both a NETDEV_BONDING_INFO LAG unlink notification as for a NETDEV_UNREGISTER call. This is causing a problem though, since the netdev_notifier_info passed has a different structure depending on which event is passed. The problem manifests as a call trace from a BUG: KASAN stack-out-of-bounds error. Fix this by creating a handler specific to NETDEV_UNREGISTER that only is passed valid elements in the netdev_notifier_info struct for the NETDEV_UNREGISTER event. Also included is the removal of an unbalanced dev_put on the peer_netdev and related braces.

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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

Weakness Type (CWE)

CWE-908 CWE-908

Affected Products

Vendor	Product	Versions
linux	linux_kernel	5.14.16 — 5.15
linux	linux_kernel	5.15.1 — 5.15.24
linux	linux_kernel	5.16 — 5.16.10
linux	linux_kernel	All
linux	linux_kernel	All
linux	linux_kernel	All
linux	linux_kernel	All

References

Advisories & Patches

https://git.kernel.org/stable/c/bea1898f65b9b7096cb4e73e97c83b94718f1fa1 https://git.kernel.org/stable/c/f9daedc3ab8f673e3a9374b91a89fbf1174df469 https://git.kernel.org/stable/c/faa9bcf700ca1a0d09f92502a6b65d3ce313fb46 https://git.kernel.org/stable/c/bea1898f65b9b7096cb4e73e97c83b94718f1fa1 https://git.kernel.org/stable/c/f9daedc3ab8f673e3a9374b91a89fbf1174df469 https://git.kernel.org/stable/c/faa9bcf700ca1a0d09f92502a6b65d3ce313fb46

Frequently Asked Questions

What is CVE-2022-48807? +

In the Linux kernel, the following vulnerability has been resolved: ice: Fix KASAN error in LAG NETDEV_UNREGISTER handler Currently, the same handler is called for both a NETDEV_BONDING_INFO LAG unlink notification as for a NETDEV_UNREGISTER call. This is causing a problem though, since the netdev_notifier_info passed has a different structure depending on which event is passed. The problem manifests as a call trace from a BUG: KASAN stack-out-of-bounds error. Fix this by creating a handler specific to NETDEV_UNREGISTER that only is passed valid elements in the netdev_notifier_info struct for the NETDEV_UNREGISTER event. Also included is the removal of an unbalanced dev_put on the peer_netdev and related braces. It has a CVSS v3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2022-48807? +

CVE-2022-48807 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-2022-48807? +

CVE-2022-48807 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-2022-48807? +

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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