What is CVE-2026-43155?

CVE-2026-43155 is a medium-severity vulnerability in Linux, classified under Missing Release of Memory after Effective Lifetime. CVSS score: 5.5/10. Published 2026-05-06.

How severe is CVE-2026-43155?

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

Vulnerability in Linux

CVE-2026-43155

In the Linux kernel, the following vulnerability has been resolved: mux: mmio: fix regmap leak on probe failure The mmio regmap that may be allocated during probe is never freed. Switch to using the device managed allocator so that the…

EPSS: 0.000 (2.2th percentile) — read the EPSS interpretation.

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.

Affected products

Linux — versions 61de83fd8256e185588670d3cf0bccc3e913819c, 6.16, 0
Linux Linux_kernel

Weakness classification (CWE)

CWE-401 — Missing Release of Memory after Effective Lifetime

References

416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Patch)
416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Patch)
416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Patch)

Frequently asked questions

What is CVE-2026-43155?: CVE-2026-43155 is a medium-severity vulnerability in Linux, classified under Missing Release of Memory after Effective Lifetime. CVSS score: 5.5/10. Published 2026-05-06.
How severe is CVE-2026-43155?: Medium severity. CVSS v3 base score is 5.5 out of 10.