What is CVE-2023-23006?

CVE-2023-23006 is a medium-severity vulnerability in Linux Kernel, classified under NULL Pointer Dereference. CVSS score: 5.5/10. Published 2023-03-01.

How severe is CVE-2023-23006?

Medium severity. CVSS v3 base score is 5.5 out of 10.

NULL pointer dereference in Linux Kernel

CVE-2023-23006

In the Linux kernel before 5.15.13, drivers/net/ethernet/mellanox/mlx5/core/steering/dr_domain.c misinterprets the mlx5_get_uars_page return value (expects it to be NULL in the error case, whereas it is actually an error pointer).

Published 2023-03-01 · last modified 2026-06-17.

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: 0.002 (14.7th percentile), scored 2026-10-01.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 15th percentile — 14.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000

Affected products

Linux Kernel

Weakness classification (CWE)

CWE-476 — NULL Pointer Dereference

References

github.com/torvalds/linux/commit/6b8b42585886c59a008015083282aae434349094 (Patch)
cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.13 (Patch, Mailing List, Release Notes)

Frequently asked questions

What is CVE-2023-23006?: CVE-2023-23006 is a medium-severity vulnerability in Linux Kernel, classified under NULL Pointer Dereference. CVSS score: 5.5/10. Published 2023-03-01.
How severe is CVE-2023-23006?: Medium severity. CVSS v3 base score is 5.5 out of 10.