CVE-2026-23156

EUVD-2026-5881
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().
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
7.8 HIGH
LOCAL
LOW
LOW
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 4%
Affected Products (NVD)
VendorProductVersion
linuxlinux_kernel
6.0 ≤
𝑥
< 6.1.162
linuxlinux_kernel
6.2 ≤
𝑥
< 6.6.123
linuxlinux_kernel
6.7 ≤
𝑥
< 6.12.69
linuxlinux_kernel
6.13 ≤
𝑥
< 6.18.9
linuxlinux_kernel
6.19:rc1
linuxlinux_kernel
6.19:rc2
linuxlinux_kernel
6.19:rc3
linuxlinux_kernel
6.19:rc4
linuxlinux_kernel
6.19:rc5
linuxlinux_kernel
6.19:rc6
linuxlinux_kernel
6.19:rc7
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
linux
bookworm
6.1.170-3
fixed
bookworm (security)
6.1.172-1
fixed
bullseye
5.10.223-1
fixed
bullseye (security)
5.10.251-5
fixed
forky
7.0.7-1
fixed
sid
7.0.7-1
fixed
trixie
6.12.86-1
fixed
trixie (security)
6.12.88-1
fixed
openSUSE logo
openSUSE / SLES Releases
openSUSE Product
Release
kernel-64kb
suse enterprise desktop 15 SP7
6.4.0-150700.53.34.1
fixed
suse enterprise sap 15 SP7
6.4.0-150700.53.34.1
fixed
suse enterprise server 15 SP7
6.4.0-150700.53.34.1
fixed
kernel-default
suse enterprise desktop 15 SP7
6.4.0-150700.53.34.1
fixed
suse enterprise sap 15 SP7
6.4.0-150700.53.34.1
fixed
suse enterprise server 15 SP7
6.4.0-150700.53.34.1
fixed
kernel-default-base
suse enterprise desktop 15 SP7
6.4.0-150700.53.34.1.150700.17.23.1
fixed
suse enterprise sap 15 SP7
6.4.0-150700.53.34.1.150700.17.23.1
fixed
suse enterprise server 15 SP7
6.4.0-150700.53.34.1.150700.17.23.1
fixed
kernel-docs
suse enterprise desktop 15 SP7
6.4.0-150700.53.34.1
fixed
suse enterprise sap 15 SP7
6.4.0-150700.53.34.1
fixed
suse enterprise server 15 SP7
6.4.0-150700.53.34.1
fixed
kernel-macros
suse enterprise desktop 15 SP7
6.4.0-150700.53.34.1
fixed
suse enterprise sap 15 SP7
6.4.0-150700.53.34.1
fixed
suse enterprise server 15 SP7
6.4.0-150700.53.34.1
fixed
kernel-obs-build
suse enterprise desktop 15 SP7
6.4.0-150700.53.34.1
fixed
suse enterprise sap 15 SP7
6.4.0-150700.53.34.1
fixed
suse enterprise server 15 SP7
6.4.0-150700.53.34.1
fixed
kernel-source
suse enterprise desktop 15 SP7
6.4.0-150700.53.34.1
fixed
suse enterprise sap 15 SP7
6.4.0-150700.53.34.1
fixed
suse enterprise server 15 SP7
6.4.0-150700.53.34.1
fixed
kernel-syms
suse enterprise desktop 15 SP7
6.4.0-150700.53.34.1
fixed
suse enterprise sap 15 SP7
6.4.0-150700.53.34.1
fixed
suse enterprise server 15 SP7
6.4.0-150700.53.34.1
fixed
kernel-zfcpdump
suse enterprise desktop 15 SP7
6.4.0-150700.53.34.1
fixed
suse enterprise sap 15 SP7
6.4.0-150700.53.34.1
fixed
suse enterprise server 15 SP7
6.4.0-150700.53.34.1
fixed
References
https://git.kernel.org/stable/c/3960f1754664661a970dc9ebbab44ff93a0b4c42
https://git.kernel.org/stable/c/4b22ec1685ce1fc0d862dcda3225d852fb107995
https://git.kernel.org/stable/c/510a16f1c5c1690b33504052bc13fbc2772c23f8
https://git.kernel.org/stable/c/89b8ca709eeeabcc11ebba64806677873a2787a8
https://git.kernel.org/stable/c/e4e15a0a4403c96d9898d8398f0640421df9cb16