CVE-2022-48807: ice: Fix KASAN error in LAG NETDEV_UNREGISTER handler

Severity: medium (CVSS 5.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2024-07-16 · updated 2026-06-17
Weakness: CWE-908

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.

Affected products

Linux kernel: from 5.14.16 before 5.15; from 5.15.1 before 5.15.24; from 5.16 before 5.16.10; 5.15, 5.17-rc1, 5.17-rc2, 5.17-rc3 — fixed in 5.15, 5.15.24, 5.16.10

How to fix

Upgrade to a fixed version: Linux kernel 5.15, 5.15.24, 5.16.10. Check the vendor advisory for mitigations.

References

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