Vulnerability 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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 4.6, < 5.4.299 |
| Debian | Debian Linux | 11.0 |
Related Weaknesses (CWE)
References
- https://git.kernel.org/stable/c/1eadabcf5623f1237a539b16586b4ed8ac8dffcdPatch
- https://git.kernel.org/stable/c/3c6fb929afa313d9d11f780451d113f73922fe5dPatch
- https://git.kernel.org/stable/c/66e7cdbda74ee823ec2bf7b830ebd235c54f5ddfPatch
- https://git.kernel.org/stable/c/971feafe157afac443027acdc235badc6838560bPatch
- https://git.kernel.org/stable/c/9c21fc4cebd44dd21016c61261a683af390343f8Patch
- https://git.kernel.org/stable/c/a556f06338e1d5a85af0e32ecb46e365547f92b9Patch
- https://git.kernel.org/stable/c/e2a5e74879f9b494bbd66fa93f355feacde450c7Patch
- https://git.kernel.org/stable/c/fb216d980fae6561c7c70af8ef826faf059c6515Patch
- https://lists.debian.org/debian-lts-announce/2025/10/msg00007.htmlMailing ListThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2025/10/msg00008.htmlMailing ListThird Party Advisory
- https://cert-portal.siemens.com/productcert/html/ssa-032379.html
- https://cert-portal.siemens.com/productcert/html/ssa-089022.html
FAQ
What is CVE-2025-39853?
CVE-2025-39853 is a vulnerability with a CVSS score of 7.1 (HIGH). 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 r...
How severe is CVE-2025-39853?
CVE-2025-39853 has been rated HIGH with a CVSS base score of 7.1/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2025-39853?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel, Debian Debian Linux.