CVE-2024-35889: idpf: fix kernel panic on unknown packet types

Severity: medium (CVSS 5.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2024-05-19 · updated 2026-08-04

Description

In the Linux kernel, the following vulnerability has been resolved: idpf: fix kernel panic on unknown packet types In the very rare case where a packet type is unknown to the driver, idpf_rx_process_skb_fields would return early without calling eth_type_trans to set the skb protocol / the network layer handler. This is especially problematic if tcpdump is running when such a packet is received, i.e. it would cause a kernel panic. Instead, call eth_type_trans for every single packet, even when the packet type is unknown.

Affected products

Linux kernel: from 6.7 before 6.8.5; 6.9-rc1, 6.9-rc2 — fixed in 6.8.5

How to fix

Upgrade to a fixed version: Linux kernel 6.8.5. Check the vendor advisory for mitigations.

References

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