What is CVE-2026-23432?

CVE-2026-23432 is a high-severity vulnerability in Linux. CVSS score: 7.8/10. Published 2026-04-03.

How severe is CVE-2026-23432?

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

Vulnerability in Linux

CVE-2026-23432

In the Linux kernel, the following vulnerability has been resolved: mshv: Fix use-after-free in mshv_map_user_memory error path In the error path of mshv_map_user_memory(), calling vfree() directly on the region leaves the MMU notifier r…

EPSS: 0.000 (4.2th 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 b9a66cd5ccbb9fade15d0e427e19470d8ad35b75, 6.19, 0

References

git.kernel.org/stable/c/34861bdc0c0196b6c2dd48f7454029407704ff6e
git.kernel.org/stable/c/6922db250422a0dfee34de322f86b7a73d713d33

Frequently asked questions

What is CVE-2026-23432?: CVE-2026-23432 is a high-severity vulnerability in Linux. CVSS score: 7.8/10. Published 2026-04-03.
How severe is CVE-2026-23432?: High severity. CVSS v3 base score is 7.8 out of 10.