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Back to active CVEs
High · CVSS 7.1CVE-2025-39853

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

Answer in brief

CVE-2025-39853 records a High severity (CVSS 7.1) vulnerability in i40e: Fix potential invalid access when MAC list is empty. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic), Siemens/RUGGEDCOM RST2428P (generic), Siemens/SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family (generic) and additional mapped packages. Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 19, 2025Updated Nov 5, 2026Source checked Nov 5, 2026First seen by HOL Oct 28, 2026Material review Nov 5, 2026
Upstream Advisory

Key facts

Risk
High · CVSS 7.1
Exploitation
Not marked as known exploited
Affected software
25 mapped packages or products
Fix availability
Available

Why this deserves its current priority

CVSS is 7.1. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Linux/Linux (generic), Linux/Linux (generic), Siemens/RUGGEDCOM RST2428P (generic), Siemens/SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family (generic) and additional mapped packages. Check affected ranges and fixed versions before updating.

Affected products and reported versions
ProductAffected versionsFixed versions
cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:o:linux:linux_kernel:6.17:rc1:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:o:linux:linux_kernel:6.17:rc2:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:o:linux:linux_kernel:6.17:rc3:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:o:linux:linux_kernel:6.17:rc4:*:*:*:*:*:*Not reportedNot reported
Mapped affected packages and fixed versions
PackageAffected rangeFixed version
Linux/Linuxgeneric>=e3219ce6a775468368fb270fae3eb82a6787b436 <971feafe157afac443027acdc235badc6838560b || >=e3219ce6a775468368fb270fae3eb82a6787b436 <3c6fb929afa313d9d11f780451d113f73922fe5d || >=e3219ce6a775468368fb270fae3eb82a6787b436 <1eadabcf5623f1237a539b16586b4ed8ac8dffcd || >=e3219ce6a775468368fb270fae3eb82a6787b436 <e2a5e74879f9b494bbd66fa93f355feacde450c7 || >=e3219ce6a775468368fb270fae3eb82a6787b436 <fb216d980fae6561c7c70af8ef826faf059c6515 || >=e3219ce6a775468368fb270fae3eb82a6787b436 <66e7cdbda74ee823ec2bf7b830ebd235c54f5ddf || >=e3219ce6a775468368fb270fae3eb82a6787b436 <9c21fc4cebd44dd21016c61261a683af390343f8 || >=e3219ce6a775468368fb270fae3eb82a6787b436 <a556f06338e1d5a85af0e32ecb46e365547f92b9971feafe157afac443027acdc235badc6838560b, 3c6fb929afa313d9d11f780451d113f73922fe5d, 1eadabcf5623f1237a539b16586b4ed8ac8dffcd, e2a5e74879f9b494bbd66fa93f355feacde450c7, fb216d980fae6561c7c70af8ef826faf059c6515, 66e7cdbda74ee823ec2bf7b830ebd235c54f5ddf, 9c21fc4cebd44dd21016c61261a683af390343f8, a556f06338e1d5a85af0e32ecb46e365547f92b9
Linux/Linuxgeneric4.6Not reported
Siemens/RUGGEDCOM RST2428Pgeneric>=0 <V3.3V3.3
Siemens/SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 familygeneric>=0 <V3.3V3.3
Siemens/SCALANCE XCH328generic>=0 <V3.3V3.3
Siemens/SCALANCE XCM324generic>=0 <V3.3V3.3
Siemens/SCALANCE XCM328generic>=0 <V3.3V3.3
Siemens/SCALANCE XCM332generic>=0 <V3.3V3.3
Siemens/SCALANCE XRH334 (24 V DC, 8xFO, CC)generic>=0 <V3.3V3.3
Siemens/SCALANCE XRM334 (230 V AC, 12xFO)generic>=0 <V3.3V3.3
Siemens/SCALANCE XRM334 (230V AC, 2x10G, 24xSFP, 8xSFP+)generic>=0 <V3.3V3.3
Siemens/SCALANCE XRM334 (230 V AC, 8xFO)generic>=0 <V3.3V3.3
Siemens/SCALANCE XRM334 (24 V DC, 12xFO)generic>=0 <V3.3V3.3
Siemens/SCALANCE XRM334 (24V DC, 2x10G, 24xSFP, 8xSFP+)generic>=0 <V3.3V3.3
Siemens/SCALANCE XRM334 (24 V DC, 8xFO)generic>=0 <V3.3V3.3
Siemens/SCALANCE XRM334 (2x230 V AC, 12xFO)generic>=0 <V3.3V3.3
Siemens/SCALANCE XRM334 (2x230V AC, 2x10G, 24xSFP, 8xSFP+)generic>=0 <V3.3V3.3
Siemens/SCALANCE XRM334 (2x230 V AC, 8xFO)generic>=0 <V3.3V3.3
Siemens/SIMATIC CN 4100generic>=0 <V5.0V5.0

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux, Siemens/RUGGEDCOM RST2428P.
  2. 2Review the reported fix. Update Linux/Linux to 971feafe157afac443027acdc235badc6838560b; Siemens/RUGGEDCOM RST2428P to V3.3; Siemens/SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family to V3.3; Siemens/SCALANCE XCH328 to V3.3; Siemens/SCALANCE XCM324 to V3.3; Siemens/SCALANCE XCM328 to V3.3; Siemens/SCALANCE XCM332 to V3.3; Siemens/SCALANCE XRH334 (24 V DC, 8xFO, CC) to V3.3; Siemens/SCALANCE XRM334 (230 V AC, 12xFO) to V3.3; Siemens/SCALANCE XRM334 (230V AC, 2x10G, 24xSFP, 8xSFP+) to V3.3; Siemens/SCALANCE XRM334 (230 V AC, 8xFO) to V3.3; Siemens/SCALANCE XRM334 (24 V DC, 12xFO) to V3.3; Siemens/SCALANCE XRM334 (24V DC, 2x10G, 24xSFP, 8xSFP+) to V3.3; Siemens/SCALANCE XRM334 (24 V DC, 8xFO) to V3.3; Siemens/SCALANCE XRM334 (2x230 V AC, 12xFO) to V3.3; Siemens/SCALANCE XRM334 (2x230V AC, 2x10G, 24xSFP, 8xSFP+) to V3.3; Siemens/SCALANCE XRM334 (2x230 V AC, 8xFO) to V3.3; Siemens/SIMATIC CN 4100 to V5.0 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Sep 19, 2025

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Nov 5, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Oct 28, 2026

Sources and claim methodology

  • Source referencecert-portal.siemens.com
  • Source referencecert-portal.siemens.com
  • Source referencegit.kernel.org
  • Source referencegit.kernel.org
  • Source referencegit.kernel.org
  • Source referencegit.kernel.org
  • Source referencegit.kernel.org
  • Source referencegit.kernel.org
  • Source referencegit.kernel.org
  • Source referencegit.kernel.org
  • Source referencelists.debian.org
  • Source referencelists.debian.org
Upstream source description

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.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • FastNetMon: IPv6 Fragment header dereferenced without bounds check in shared packet parserAlso CWE-125
  • FastNetMon: Legacy pcap parse_packet() has no bounds checking, causing out-of-bounds read on truncated framesAlso CWE-125
  • FastNetMon: NetFlow v9 unbounded strlen() on interface-description field causes remote out-of-bounds readAlso CWE-125
  • FastNetMon: sFlow header_size field trusted as parser capture length causes remote out-of-bounds readAlso CWE-125

Record context

Vulnerability class
Buffer Overflow
EPSS
Not reported
CWE IDs
CWE-125
Source
CVE List V5
Source checked
Nov 5, 2026
References
12 linked sources
Open source record