CVE-2025-39853
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…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.16%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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 3.1
- 7.1 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
- EPSS
- 0.16% probability · 6th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-125
- Affected
- linux/linux kernel · debian/debian linux
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
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 List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2025/10/msg00008.htmlMailing List, Third Party Advisory
- https://cert-portal.siemens.com/productcert/html/ssa-032379.html
- https://cert-portal.siemens.com/productcert/html/ssa-089022.html
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.