CVE-2024-36020

MEDIUM

Linux Kernel 4.19.264-4.19.311 - Use of Uninitialized Resource in i40e VF Pointer Handling

Title source: llm
STIX 2.1

Description

In the Linux kernel, the following vulnerability has been resolved: i40e: fix vf may be used uninitialized in this function warning To fix the regression introduced by commit 52424f974bc5, which causes servers hang in very hard to reproduce conditions with resets races. Using two sources for the information is the root cause. In this function before the fix bumping v didn't mean bumping vf pointer. But the code used this variables interchangeably, so stale vf could point to different/not intended vf. Remove redundant "v" variable and iterate via single VF pointer across whole function instead to guarantee VF pointer validity.

Scores

CVSS v3 5.5
EPSS 0.0025
EPSS Percentile 15.7%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-908
Status published
Products (28)
debian/debian_linux 10.0
Linux/Linux < 6.1
Linux/Linux 02f949747e6fb767b29f7931d4bbf40911684e7a
Linux/Linux 4.19.264 - 4.19.312
Linux/Linux 4.19.312 - 4.19.*
Linux/Linux 5.10.153 - 5.10.215
Linux/Linux 5.10.215 - 5.10.*
Linux/Linux 5.15.154 - 5.15.*
Linux/Linux 5.15.77 - 5.15.154
Linux/Linux 5.4.223 - 5.4.274
... and 18 more
Published May 30, 2024
Tracked Since Feb 18, 2026