Strix
26.1K

CVE-2025-39853

HIGHCVSS 7.1/10EPSS 0.15%

Last modified

CVE-2025-39853 is a high-severity vulnerability rated 7.1/10 on the CVSS scale. 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.. EPSS estimates a 0.15% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1
7.1/10

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

EPSS Probability
0.15%

4.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersionsUpdate
LinuxLinux Kernel>= 4.6, < 5.4.299—
LinuxLinux Kernel>= 5.5, < 5.10.243—
LinuxLinux Kernel>= 5.11, < 5.15.192—
LinuxLinux Kernel>= 5.16, < 6.1.151—
LinuxLinux Kernel>= 6.2, < 6.6.105—
LinuxLinux Kernel>= 6.7, < 6.12.46—
LinuxLinux Kernel>= 6.13, < 6.16.6—
LinuxLinux Kernel6.17Rc1
DebianDebian Linux11.0—

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is 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 potential invalid memory access when dereferenced. Fix this by using list_first_entry_or_null instead of list_first_entry.
How severe is CVE-2025-39853?
CVE-2025-39853 has a CVSS score of 7.1/10 (HIGH severity). The EPSS model estimates a 0.15% probability of exploitation in the next 30 days.
How do I fix CVE-2025-39853?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2025-39853?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST