Medium 5.5Published May 6, 2026

CVE-2026-43155mux: mmio: fix regmap leak on probe failure

Updated under an hour ago (Oct 27, 2026, 6:30 AM ET)

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Exploited in the last 30 days

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 regmap is released on probe failures (e.g. probe deferral) and on driver unbind.

CVSS: 5.5 MEDIUM (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Analyzed
Record last updated: May 11, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from 61de83fd8256e185588670d3cf0bccc3e913819c before 76096f156fe9dc9fbd6e4618088706e91b9b0a6c; from 61de83fd8256e185588670d3cf0bccc3e913819c before cbde3c109d52564ae2c12e514c33c44345e84b2c; 61de83fd8256e185588670d3cf0bccc3e913819c builds before 3c4ae63073d84abee5d81ce46d86a94e9dae9c89	CNA record
linux linux_kernel linux:linux_kernel	from 6.16 before 6.18.16; from 6.19 before 6.19.6	NVD

References

References

https://git.kernel.org/stable/c/76096f156fe9dc9fbd6e4618088706e91b9b0a6c	patch
https://git.kernel.org/stable/c/cbde3c109d52564ae2c12e514c33c44345e84b2c	patch
https://git.kernel.org/stable/c/3c4ae63073d84abee5d81ce46d86a94e9dae9c89	patch

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.