CVE-2026-23042

Linux Kernel 6.17-6.18.5 - NULL Pointer Dereference in idpf_idc_vport_dev_down

Title source: llm
STIX 2.1

Description

In the Linux kernel, the following vulnerability has been resolved: idpf: fix aux device unplugging when rdma is not supported by vport If vport flags do not contain VIRTCHNL2_VPORT_ENABLE_RDMA, driver does not allocate vdev_info for this vport. This leads to kernel NULL pointer dereference in idpf_idc_vport_dev_down(), which references vdev_info for every vport regardless. Check, if vdev_info was ever allocated before unplugging aux device.

Scores

EPSS 0.0003
EPSS Percentile 8.2%

Details

Status published
Products (7)
linux/Kernel 6.17.0 - 6.18.6linux
Linux/Linux < 6.17
Linux/Linux 6.17
Linux/Linux 6.18.6 - 6.18.*
Linux/Linux 6.19
Linux/Linux be91128c579c86d295da4325f6ac4710e4e6d2b4 - 0ad6d6e50e9d8bf596cfe77a882ddc20b29f525a
Linux/Linux be91128c579c86d295da4325f6ac4710e4e6d2b4 - 4648fb2f2e7210c53b85220ee07d42d1e4bae3f9
Published Feb 04, 2026
Tracked Since Feb 18, 2026