CVE-2026-97434

Summary

In the Linux kernel, the following vulnerability has been resolved:

dpaa2-switch: fix handling of NAPI on the remove path

All the NAPI instances for a DPSW device are attached to the first switch port's net_device but shared by all ports. The NAPI instances get disabled only once the last port goes down.

This causes an issue on the .remove() path where each port is unregistered and freed one at a time, causing the NAPI instances to be deleted even though they are not disabled.

In order to avoid this, split up the unregister_netdev() calls from the free_netdev() so that we make sure all ports go down before we attempt a deletion of NAPI instances. Also, make the netif_napi_del() explicit as it is on the .probe() path.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux0b1b71370458860579831e77485883fcf2e8fbbe < 569df157eb874cb3b50554d73b89f31599397b42affected
LinuxLinux0b1b71370458860579831e77485883fcf2e8fbbe < 6518f87771c8833e587bd9881346fa759651c2aeaffected
LinuxLinux0b1b71370458860579831e77485883fcf2e8fbbe < e23d7c8c1d4ba435c457d7ffb2669175ec819b07affected
LinuxLinux5.13affected
LinuxLinux0 < 5.13unaffected
LinuxLinux6.12.111 <= 6.12.*unaffected
LinuxLinux6.18.53 <= 6.18.*unaffected
LinuxLinux7.2 <= *unaffected

Weaknesses

References