CVE-2025-39853
What it is
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.
At a glance
- Exploitability
- Can be exploited locally on the machine with a low-privilege account. High risk of data exposure, service disruption.
- Exploit odds
- 0.2% chance of exploitation in the next 30 days (EPSS).
- Fix
- A patch, advisory or fixed version is referenced. Upgrade or apply it.
Timeline
- PublishedDisclosed publicly on CVE.org and NVD
- Last updatedMost recent change to the record
Why it ranks here
- Exploited in the wild: no, CISA does not list it.
- Exploit odds: 0.2% in the next 30 days (EPSS).
- Severity: 7.1 HIGH (CVSS).
- Fix: a patch or advisory is linked.
Details
- Published
- Last modified
- Exploit probability
- 0.2% · EPSS, next 30 days
- Weakness
- CWE-125 · Out-of-bounds read
- Record status
- Modified
Affected
- Linux Kernel < 5.4.299
- Linux Kernel < 5.10.243
- Linux Kernel < 5.15.192
- Linux Kernel < 6.1.151
- Linux Kernel < 6.6.105
- Linux Kernel < 6.12.46
- Linux Kernel < 6.16.6
- Linux Kernel 6.17
Attack profile CVSS 3.1 · 7.1
- Attack vector
- Local
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- None
- Availability
- High
Raw vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
Is it in your code?
Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.
Read https://cve-list.com/agent/cve/CVE-2025-39853.md and follow it. Check whether this project is affected by CVE-2025-39853. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.
Fix and advisories
- https://git.kernel.org/stable/c/1eadabcf5623f1237a539b16586b4ed8ac8dffcd
- https://git.kernel.org/stable/c/3c6fb929afa313d9d11f780451d113f73922fe5d
- https://git.kernel.org/stable/c/66e7cdbda74ee823ec2bf7b830ebd235c54f5ddf
- https://git.kernel.org/stable/c/971feafe157afac443027acdc235badc6838560b
- https://git.kernel.org/stable/c/9c21fc4cebd44dd21016c61261a683af390343f8
- https://git.kernel.org/stable/c/a556f06338e1d5a85af0e32ecb46e365547f92b9
- https://git.kernel.org/stable/c/e2a5e74879f9b494bbd66fa93f355feacde450c7
- https://git.kernel.org/stable/c/fb216d980fae6561c7c70af8ef826faf059c6515
References
- https://git.kernel.org/stable/c/1eadabcf5623f1237a539b16586b4ed8ac8dffcd
- https://git.kernel.org/stable/c/3c6fb929afa313d9d11f780451d113f73922fe5d
- https://git.kernel.org/stable/c/66e7cdbda74ee823ec2bf7b830ebd235c54f5ddf
- https://git.kernel.org/stable/c/971feafe157afac443027acdc235badc6838560b
- https://git.kernel.org/stable/c/9c21fc4cebd44dd21016c61261a683af390343f8
- https://git.kernel.org/stable/c/a556f06338e1d5a85af0e32ecb46e365547f92b9
- https://git.kernel.org/stable/c/e2a5e74879f9b494bbd66fa93f355feacde450c7
- https://git.kernel.org/stable/c/fb216d980fae6561c7c70af8ef826faf059c6515
- https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html
- https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html
- https://cert-portal.siemens.com/productcert/html/ssa-032379.html
- https://cert-portal.siemens.com/productcert/html/ssa-089022.html