High 7.8Published May 30, 2024

CVE-2024-36020i40e: fix vf may be used uninitialized in this function warning

Updated under an hour ago (Oct 26, 2026, 5:50 PM ET)

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Exploited in the last 30 days

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.

CVSS: 7.8 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Modified
Record last updated: Oct 14, 2026
First seen by InfoSec Signals: Oct 14, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from 76ed715836c6994bac29d9638e9314e6e3b08651 before cc9cd02dd9e8b7764ea9effb24f4f1dd73d1b23d; from e88c2a1e28c5475065563d66c07ca879a9afbd07 before 9dcf0fcb80f6aeb01469e3c957f8d4c97365450a; from 9abae363af5ced6adbf04c14366289540281fb26 before b8e82128b44fa40bf99a50b919488ef361e1683c; from c39de3ae5075ea5f78e097cb5720d4e52d5caed9 before 951d2748a2a8242853abc3d0c153ce4bf8faad31; 52424f974bc53c26ba3f00300a00e9de9afcd972 builds before 3e89846283f3cf7c7a8e28b342576fd7c561d2ba; 52424f974bc53c26ba3f00300a00e9de9afcd972 builds before 0dcf573f997732702917af1563aa2493dc772fc0; 52424f974bc53c26ba3f00300a00e9de9afcd972 builds before 06df7618f591b2dc43c59967e294d7b9fc8675b6; from 52424f974bc53c26ba3f00300a00e9de9afcd972 before f37c4eac99c258111d414d31b740437e1925b8e8; and 6 more ranges	CNA record
Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem siemens:simatic_s7_1500_tm_mfp_gnu_linux_subsystem (from the name)	before V1.1.1	CISA ADP
linux linux_kernel linux:linux_kernel	from 4.19.264 before 4.19.312; from 5.4.223 before 5.4.274; from 5.10.153 before 5.10.215; from 5.15.77 before 5.15.154; from 6.0.7 before 6.1; from 6.1.1 before 6.1.85; from 6.2 before 6.6.26; from 6.7 before 6.8.5; and 9 more ranges	NVD
debian debian_linux debian:debian_linux	10.0	NVD

References

References

https://git.kernel.org/stable/c/cc9cd02dd9e8b7764ea9effb24f4f1dd73d1b23d	patch
https://git.kernel.org/stable/c/9dcf0fcb80f6aeb01469e3c957f8d4c97365450a	patch
https://git.kernel.org/stable/c/b8e82128b44fa40bf99a50b919488ef361e1683c	patch
https://git.kernel.org/stable/c/951d2748a2a8242853abc3d0c153ce4bf8faad31	patch
https://git.kernel.org/stable/c/3e89846283f3cf7c7a8e28b342576fd7c561d2ba	patch
https://git.kernel.org/stable/c/0dcf573f997732702917af1563aa2493dc772fc0	patch
https://git.kernel.org/stable/c/06df7618f591b2dc43c59967e294d7b9fc8675b6	patch
https://git.kernel.org/stable/c/f37c4eac99c258111d414d31b740437e1925b8e8	patch
https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html	third-party-advisory
https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html	third-party-advisory
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The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.