What is CVE-2026-23437?

CVE-2026-23437 is a high-severity vulnerability in Linux. CVSS score: 7.8/10. Published 2026-04-03.

How severe is CVE-2026-23437?

High severity. CVSS v3 base score is 7.8 out of 10.

Vulnerability in Linux

CVE-2026-23437

In the Linux kernel, the following vulnerability has been resolved: net: shaper: protect late read accesses to the hierarchy We look up a netdev during prep of Netlink ops (pre- callbacks) and take a ref to it. Then later in the body of…

EPSS: 0.000 (3.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Linux — versions 4b623f9f0f59652ea71fcb27d60b4c3b65126dbb, 6.13, 0

References

git.kernel.org/stable/c/581eee0890a8bde44f1fb78ad3e70502a897d583
git.kernel.org/stable/c/348758ba74e6a348299965b16a97cfb817545cc0
git.kernel.org/stable/c/0f9ea7141f365b4f27226898e62220fb98ef8dc6

Frequently asked questions

What is CVE-2026-23437?: CVE-2026-23437 is a high-severity vulnerability in Linux. CVSS score: 7.8/10. Published 2026-04-03.
How severe is CVE-2026-23437?: High severity. CVSS v3 base score is 7.8 out of 10.