NULL pointer dereference in Linux

CVE-2026-23155

In the Linux kernel, the following vulnerability has been resolved: can: gs_usb: gs_usb_receive_bulk_callback(): fix error message Sinc commit 79a6d1bfe114 ("can: gs_usb: gs_usb_receive_bulk_callback(): unanchor URL on usb_submit_urb() error") a failing resubmit URB will print an info message. In the case of a short read where netdev has not yet been assigned, initialize as NULL to avoid dereferencing an undefined value. Also report the error value of the failed resubmit.

Published · last modified .

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.001 (1.6th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 2nd percentile — 1.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2026-23155: held from 0.001 to 0.001.

EPSS over last 30 days · oldest: 0.001 · newest: 0.001 · change: +0.000

Affected products

  • Linux — versions da01de754e455e2598a7f1ce4ff2078c4f0ecde1, aa8a8866c533a150be4763bcb27993603bd5426c, ce4352057fc5a986c76ece90801b9755e7c6e56c
  • Linux Kernel — versions 6.6.122, 6.12.68, 6.18.8

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-23155?
CVE-2026-23155 is a medium-severity vulnerability in Linux, classified under NULL Pointer Dereference. CVSS score: 5.5/10. Published 2026-02-14.
How severe is CVE-2026-23155?
Medium severity. CVSS v3 base score is 5.5 out of 10.