Vulnerability record · CVE-2026-23156 · published 14 February 2026

CVE-2026-23156: Linux kernel vulnerability

Linux · Linux Kernel

In the Linux kernel, the following vulnerability has been resolved: efivarfs: fix error propagation in efivar_entry_get() efivar_entry_get() always returns success even if the underlying __efivar_entry_get() fails, masking errors. This may result in uninitialized heap memory being copied to userspace in the efivarfs_file_read() path. Fix it by returning the error from __efivar_entry_get().

7.8 CVSS 3.1 High EPSS 0.13% · top 98.1%

7.8CVSS 3.1 base score

0.13%EPSS exploitation probability, 30 days

NoNot in CISA KEV

1Affected product versions listed by NVD

5References

17 Jun 2026Last modified by NVD

Description

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

Linux Kernel Linux

References

Link	Tags
https://git.kernel.org/stable/c/3960f1754664661a970dc9ebbab44ff93a0b4c42	Patch
https://git.kernel.org/stable/c/4b22ec1685ce1fc0d862dcda3225d852fb107995	Patch
https://git.kernel.org/stable/c/510a16f1c5c1690b33504052bc13fbc2772c23f8	Patch
https://git.kernel.org/stable/c/89b8ca709eeeabcc11ebba64806677873a2787a8	Patch
https://git.kernel.org/stable/c/e4e15a0a4403c96d9898d8398f0640421df9cb16	Patch

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Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2026-23156), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.