High 7.1Published Sep 19, 2025

CVE-2025-39853i40e: Fix potential invalid access when MAC list is empty

Updated under an hour ago (Oct 27, 2026, 11:50 AM ET)

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Exploited in the last 30 days

In the Linux kernel, the following vulnerability has been resolved: i40e: Fix potential invalid access when MAC list is empty list_first_entry() never returns NULL - if the list is empty, it still returns a pointer to an invalid object, leading to potential invalid memory access when dereferenced. Fix this by using list_first_entry_or_null instead of list_first_entry.

CVSS: 7.1 HIGH (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/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: Modified
Record last updated: May 12, 2026
First seen by InfoSec Signals: Oct 19, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from e3219ce6a775468368fb270fae3eb82a6787b436 before 971feafe157afac443027acdc235badc6838560b; from e3219ce6a775468368fb270fae3eb82a6787b436 before 3c6fb929afa313d9d11f780451d113f73922fe5d; from e3219ce6a775468368fb270fae3eb82a6787b436 before 1eadabcf5623f1237a539b16586b4ed8ac8dffcd; from e3219ce6a775468368fb270fae3eb82a6787b436 before e2a5e74879f9b494bbd66fa93f355feacde450c7; from e3219ce6a775468368fb270fae3eb82a6787b436 before fb216d980fae6561c7c70af8ef826faf059c6515; from e3219ce6a775468368fb270fae3eb82a6787b436 before 66e7cdbda74ee823ec2bf7b830ebd235c54f5ddf; from e3219ce6a775468368fb270fae3eb82a6787b436 before 9c21fc4cebd44dd21016c61261a683af390343f8; from e3219ce6a775468368fb270fae3eb82a6787b436 before a556f06338e1d5a85af0e32ecb46e365547f92b9	CNA record
Siemens RUGGEDCOM RST2428P siemens:ruggedcom_rst2428p (from the name)	before V3.3	CISA ADP
Siemens SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family siemens:scalance_xc_300_xr_300_xc_400_xr_500wg_xr_500_family (from the name)	before V3.3	CISA ADP
Siemens SCALANCE XCH328 siemens:scalance_xch328 (from the name)	before V3.3	CISA ADP
Siemens SCALANCE XCM324 siemens:scalance_xcm324 (from the name)	before V3.3	CISA ADP
Siemens SCALANCE XCM328 siemens:scalance_xcm328 (from the name)	before V3.3	CISA ADP
Siemens SCALANCE XCM332 siemens:scalance_xcm332 (from the name)	before V3.3	CISA ADP
Siemens SCALANCE XRH334 (24 V DC, 8xFO, CC) siemens:scalance_xrh334_24_v_dc_8xfo_cc (from the name)	before V3.3	CISA ADP
Siemens SCALANCE XRM334 (230 V AC, 12xFO) siemens:scalance_xrm334_230_v_ac_12xfo (from the name)	before V3.3	CISA ADP
Siemens SCALANCE XRM334 (230 V AC, 8xFO) siemens:scalance_xrm334_230_v_ac_8xfo (from the name)	before V3.3	CISA ADP
1–10 of 20

References

References

https://git.kernel.org/stable/c/971feafe157afac443027acdc235badc6838560b	patch
https://git.kernel.org/stable/c/3c6fb929afa313d9d11f780451d113f73922fe5d	patch
https://git.kernel.org/stable/c/1eadabcf5623f1237a539b16586b4ed8ac8dffcd	patch
https://git.kernel.org/stable/c/e2a5e74879f9b494bbd66fa93f355feacde450c7	patch
https://git.kernel.org/stable/c/fb216d980fae6561c7c70af8ef826faf059c6515	patch
https://git.kernel.org/stable/c/66e7cdbda74ee823ec2bf7b830ebd235c54f5ddf	patch
https://git.kernel.org/stable/c/9c21fc4cebd44dd21016c61261a683af390343f8	patch
https://git.kernel.org/stable/c/a556f06338e1d5a85af0e32ecb46e365547f92b9	patch
https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html	mailing-list, third-party-advisory
https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html	mailing-list, third-party-advisory
1–10 of 12

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.