CVE-2025-22065

/// Technical description

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

idpf: fix adapter NULL pointer dereference on reboot

With SRIOV enabled, idpf ends up calling into idpf_remove() twice.

First via idpf_shutdown() and then again when idpf_remove() calls into

sriov_disable(), because the VF devices use the idpf driver, hence the

same remove routine. When that happens, it is possible for the adapter

to be NULL from the first call to idpf_remove(), leading to a NULL

pointer dereference.

echo 1 > /sys/class/net/<netif>/device/sriov_numvfs

reboot

BUG: kernel NULL pointer dereference, address: 0000000000000020

...

RIP: 0010:idpf_remove+0x22/0x1f0 [idpf]

...

? idpf_remove+0x22/0x1f0 [idpf]

? idpf_remove+0x1e4/0x1f0 [idpf]

pci_device_remove+0x3f/0xb0

device_release_driver_internal+0x19f/0x200

pci_stop_bus_device+0x6d/0x90

pci_stop_and_remove_bus_device+0x12/0x20

pci_iov_remove_virtfn+0xbe/0x120

sriov_disable+0x34/0xe0

idpf_sriov_configure+0x58/0x140 [idpf]

idpf_remove+0x1b9/0x1f0 [idpf]

id

/// Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

/// References