High 7.8Published Feb 14, 2026

CVE-2026-23156efivarfs: fix error propagation in efivar_entry_get()

Updated under an hour ago (Oct 27, 2026, 2:30 PM ET)

Does this affect you?

It affects Linux and 1 other product. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

Do this next

Start free and add your stack

Free account, 1 product

Every CVE for Linux

Exploited in the last 30 days

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().

CVSS: 7.8 HIGH (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/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 2d82e6227ea189c0589e7383a36616ac2a2d248c before 3960f1754664661a970dc9ebbab44ff93a0b4c42; from 2d82e6227ea189c0589e7383a36616ac2a2d248c before 510a16f1c5c1690b33504052bc13fbc2772c23f8; from 2d82e6227ea189c0589e7383a36616ac2a2d248c before 89b8ca709eeeabcc11ebba64806677873a2787a8; from 2d82e6227ea189c0589e7383a36616ac2a2d248c before e4e15a0a4403c96d9898d8398f0640421df9cb16; from 2d82e6227ea189c0589e7383a36616ac2a2d248c before 4b22ec1685ce1fc0d862dcda3225d852fb107995	CNA record
linux linux_kernel linux:linux_kernel	from 6.0 before 6.1.162; from 6.2 before 6.6.123; from 6.7 before 6.12.69; from 6.13 before 6.18.9; 6.19; 6.19; 6.19; 6.19; and 3 more ranges	NVD

References

References

https://git.kernel.org/stable/c/3960f1754664661a970dc9ebbab44ff93a0b4c42	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
https://git.kernel.org/stable/c/4b22ec1685ce1fc0d862dcda3225d852fb107995	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.