CVE-2025-39853 — Out-of-bounds Read in Linux
Severity
7.1HIGHNVD
EPSS
0.0%
top 98.80%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
Timeline
PublishedSep 19
Latest updateApr 9
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 vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:HExploitability: 1.8 | Impact: 5.2
Affected Packages3 packages
▶CVEListV5linux/linuxe3219ce6a775468368fb270fae3eb82a6787b436 — 971feafe157afac443027acdc235badc6838560b+8
Also affects: Debian Linux 11.0
Patches
🔴Vulnerability Details
3GHSA▶
GHSA-7fp7-xjmp-444h: In the Linux kernel, the following vulnerability has been resolved:
i40e: Fix potential invalid access when MAC list is empty
list_first_entry() nev↗2025-09-22
OSV▶
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↗2025-09-19