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OpenAdvisories
High · 7.8 CVE-2024-36020 EUVD-2024-35830

i40e: fix vf may be used uninitialized in this function warning

Published May 30, 2024 · Updated Oct 15, 2026 · Assigned by Linux

Vendor: Linux Product: Linux Package: linux Package: linux Package: linux-allwinner-5.19 Package: linux-aws Package: linux-aws-5.0 Package: linux-aws-5.11 Package: linux-aws-5.13 Package: linux-aws-5.15 Package: linux-aws-5.19 Package: linux-aws-5.3 Package: linux-aws-5.4 Package: linux-aws-5.8 Package: linux-aws-6.2 Package: linux-aws-6.5 Package: linux-aws-6.8 Package: linux-aws-fips Package: linux-aws-hwe Package: linux-azure Package: linux-azure-4.15 Package: linux-azure-5.11 Package: linux-azure-5.13 Package: linux-azure-5.15 Package: linux-azure-5.19 Package: linux-azure-5.3 Package: linux-azure-5.4 Package: linux-azure-5.8 Package: linux-azure-6.2 Package: linux-azure-6.5 Package: linux-azure-6.8 Package: linux-azure-edge Package: linux-azure-fde Package: linux-azure-fde-5.19 Package: linux-azure-fde-6.2 Package: linux-azure-fips Package: linux-bluefield Package: linux-fips Package: linux-gcp Package: linux-gcp-4.15 Package: linux-gcp-5.11 Package: linux-gcp-5.13 Package: linux-gcp-5.15 Package: linux-gcp-5.19 Package: linux-gcp-5.3 Package: linux-gcp-5.4 Package: linux-gcp-5.8 Package: linux-gcp-6.2 Package: linux-gcp-6.5 Package: linux-gcp-fips Package: linux-gke Package: linux-gke-4.15 Package: linux-gke-5.15 Package: linux-gke-5.4 Package: linux-gkeop Package: linux-gkeop-5.15 Package: linux-gkeop-5.4 Package: linux-hwe Package: linux-hwe-5.11 Package: linux-hwe-5.13 Package: linux-hwe-5.15 Package: linux-hwe-5.19 Package: linux-hwe-5.4 Package: linux-hwe-5.8 Package: linux-hwe-6.2 Package: linux-hwe-6.5 Package: linux-hwe-edge Package: linux-ibm Package: linux-ibm-5.15 Package: linux-ibm-5.4 Package: linux-intel Package: linux-intel-5.13 Package: linux-intel-iot-realtime Package: linux-intel-iotg Package: linux-intel-iotg-5.15 Package: linux-iot Package: linux-kvm Package: linux-lowlatency Package: linux-lowlatency-hwe-5.15 Package: linux-lowlatency-hwe-5.19 Package: linux-lowlatency-hwe-6.2 Package: linux-lowlatency-hwe-6.5 Package: linux-nvidia Package: linux-nvidia-6.2 Package: linux-nvidia-6.5 Package: linux-nvidia-6.8 Package: linux-nvidia-tegra Package: linux-nvidia-tegra-5.15 Package: linux-nvidia-tegra-igx Package: linux-oem Package: linux-oem-5.10 Package: linux-oem-5.13 Package: linux-oem-5.14 Package: linux-oem-5.17 Package: linux-oem-5.6 Package: linux-oem-6.0 Package: linux-oem-6.1 Package: linux-oem-6.5 Package: linux-oem-6.8 Package: linux-oracle Package: linux-oracle-5.0 Package: linux-oracle-5.11 Package: linux-oracle-5.13 Package: linux-oracle-5.15 Package: linux-oracle-5.3 Package: linux-oracle-5.4 Package: linux-oracle-5.8 Package: linux-oracle-6.5 Package: linux-oracle-6.8 Package: linux-raspi Package: linux-raspi-5.4 Package: linux-raspi-realtime Package: linux-raspi2 Package: linux-realtime Package: linux-riscv Package: linux-riscv-5.11 Package: linux-riscv-5.15 Package: linux-riscv-5.19 Package: linux-riscv-5.8 Package: linux-riscv-6.5 Package: linux-starfive-5.19 Package: linux-starfive-6.2 Package: linux-starfive-6.5 Package: linux-vmware Package: linux-xilinx-zynqmp Platform: Linux Ecosystem: Debian Ecosystem: Ubuntu

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.

Affected products

VendorProductAffectedFixed
Linux Linux 4.19.264 – < 4.19.312, 5.4.223 – < 5.4.274, 5.10.153 – < 5.10.215, 5.15.77 – < 5.15.154, 6.0.7 – < 6.1, 6.1 4.19.312

Fixed in Linux distributions

Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.

ReleasePackageFixed inAdvisory
Debian 14 linux 6.8.9-1 —
Debian 13 linux 6.8.9-1 —
Debian 12 linux 6.1.85-1 —
Debian 10 linux 4.19.316-1 DLA-3840-1
Debian 10 linux-5.10 5.10.216-1~deb10u1 DLA-3842-1
ReleasePackageFixed inAdvisory
Ubuntu Nvidia-BlueField 22.04 LTS linux-bluefield 5.15.0-1047.49 —
Ubuntu 24.04 LTS linux 6.8.0-38.38 USN-6893-1
Ubuntu 24.04 LTS linux-aws 6.8.0-1011.12 USN-6893-3
Ubuntu 24.04 LTS linux-azure 6.8.0-1010.10 USN-6893-1
Ubuntu 24.04 LTS linux-gcp 6.8.0-1010.11 USN-6893-1
Ubuntu 24.04 LTS linux-gke 6.8.0-1006.9 USN-6893-2
Ubuntu 24.04 LTS linux-ibm +2 6.8.0-1008.8 USN-6918-1, USN-6893-1
Ubuntu 24.04 LTS linux-intel 6.8.0-1007.14 USN-6893-1
Ubuntu 24.04 LTS linux-nvidia 6.8.0-1009.9 USN-6893-2
Ubuntu 24.04 LTS linux-raspi 6.8.0-1007.7 USN-6893-1
Ubuntu 24.04 LTS linux-riscv +1 6.8.0-38.38.1 USN-6893-1
Ubuntu 22.04 LTS linux +1 5.15.0-116.126 USN-6898-2, USN-6898-1
Ubuntu 22.04 LTS linux-aws 5.15.0-1065.71 USN-6898-3
Ubuntu 22.04 LTS linux-aws-6.8 6.8.0-1011.12~22.04.1 —
Ubuntu 22.04 LTS linux-azure 5.15.0-1068.77 USN-6917-1
Ubuntu 22.04 LTS linux-azure-6.8 6.8.0-1010.10~22.04.1 —
Ubuntu 22.04 LTS linux-azure-fde 5.15.0-1068.77.1 USN-6917-1
Ubuntu 22.04 LTS linux-gcp 5.15.0-1064.72 USN-6898-1
Ubuntu 22.04 LTS linux-gke 5.15.0-1062.68 USN-6898-1
Ubuntu 22.04 LTS linux-gkeop 5.15.0-1048.55 USN-6898-1
Ubuntu 22.04 LTS linux-ibm +1 5.15.0-1058.61 USN-6919-1, USN-6898-1
Ubuntu 22.04 LTS linux-intel-iotg 5.15.0-1060.66 USN-6898-1
Ubuntu 22.04 LTS linux-kvm 5.15.0-1062.67 USN-6898-1
Ubuntu 22.04 LTS linux-nvidia 5.15.0-1060.61 USN-6898-1
Ubuntu 22.04 LTS linux-nvidia-6.8 6.8.0-1009.9~22.04.1 —
Ubuntu 22.04 LTS linux-nvidia-tegra 5.15.0-1026.26 —
Ubuntu 22.04 LTS linux-nvidia-tegra-igx 5.15.0-1015.15 —
Ubuntu 22.04 LTS linux-oracle 5.15.0-1063.69 USN-6898-1
Ubuntu 22.04 LTS linux-oracle-6.8 6.8.0-1008.8~22.04.1 —
Ubuntu 22.04 LTS linux-riscv +31 No fix yet —
Ubuntu 22.04 LTS linux-xilinx-zynqmp 5.15.0-1035.39 USN-7019-1
Ubuntu 20.04 LTS linux 5.4.0-189.209 USN-6896-1
Ubuntu 20.04 LTS linux-aws 5.4.0-1128.138 USN-6896-5
Ubuntu 20.04 LTS linux-aws-5.15 5.15.0-1065.71~20.04.1 USN-6898-4
Ubuntu 20.04 LTS linux-azure 5.4.0-1133.140 USN-6896-1
Ubuntu 20.04 LTS linux-azure-5.15 5.15.0-1068.77~20.04.1 USN-6917-1
Ubuntu 20.04 LTS linux-azure-fde-5.15 5.15.0-1068.77~20.04.1.1 USN-6917-1
Ubuntu 20.04 LTS linux-bluefield 5.4.0-1088.95 USN-6896-1
Ubuntu 20.04 LTS linux-gcp 5.4.0-1132.141 USN-6896-1
Ubuntu 20.04 LTS linux-gcp-5.15 5.15.0-1065.73~20.04.1 USN-6927-1
Ubuntu 20.04 LTS linux-gke +26 No fix yet —
Ubuntu 20.04 LTS linux-gkeop 5.4.0-1095.99 USN-6896-1
Ubuntu 20.04 LTS linux-gkeop-5.15 5.15.0-1048.55~20.04.1 USN-6898-1
Ubuntu 20.04 LTS linux-hwe-5.15 +1 5.15.0-116.126~20.04.1 USN-6898-3, USN-6898-2
Ubuntu 20.04 LTS linux-ibm 5.4.0-1075.80 USN-6896-1
Ubuntu 20.04 LTS linux-ibm-5.15 5.15.0-1058.61~20.04.1 USN-6898-2
Ubuntu 20.04 LTS linux-intel-iotg-5.15 5.15.0-1060.66~20.04.1 USN-6898-1
Ubuntu 20.04 LTS linux-iot 5.4.0-1040.41 USN-6896-5
Ubuntu 20.04 LTS linux-kvm 5.4.0-1116.123 USN-6896-1
Ubuntu 20.04 LTS linux-nvidia-tegra-5.15 5.15.0-1027.27~20.04.1 —
Ubuntu 20.04 LTS linux-oracle 5.4.0-1127.136 USN-6896-3
Ubuntu 20.04 LTS linux-oracle-5.15 5.15.0-1063.69~20.04.1 USN-6898-2
Ubuntu 20.04 LTS linux-raspi 5.4.0-1112.124 USN-6896-4
Ubuntu 20.04 LTS linux-riscv-5.15 5.15.0-1061.65~20.04.1 —
Ubuntu 20.04 LTS linux-xilinx-zynqmp 5.4.0-1047.51 USN-6896-3
Ubuntu 18.04 LTS linux-gcp +13 No fix yet —
Show 10 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
Ubuntu 16.04 LTS linux-hwe-edge No fix yet —
Ubuntu Pro Realtime 24.04 LTS linux-raspi-realtime 6.8.0-2006.6 —
Ubuntu Pro Realtime 24.04 LTS linux-realtime 6.8.1-1004.4 —
Ubuntu Pro Realtime 22.04 LTS linux-intel-iot-realtime 5.15.0-1058.60 —
Ubuntu Pro Realtime 22.04 LTS linux-realtime 5.15.0-1066.74 —
Ubuntu Pro FIPS-updates 22.04 LTS linux-aws-fips 5.15.0-1065.71+fips1 —
Ubuntu Pro FIPS-updates 22.04 LTS linux-azure-fips 5.15.0-1068.77+fips1 —
Ubuntu Pro FIPS-updates 22.04 LTS linux-fips 5.15.0-115.125+fips1 —
Ubuntu Pro FIPS-updates 22.04 LTS linux-gcp-fips 5.15.0-1064.72+fips1 —
Ubuntu Pro FIPS-updates 20.04 LTS linux-aws-fips 5.4.0-1128.138+fips1 —
Ubuntu Pro FIPS-updates 20.04 LTS linux-azure-fips 5.4.0-1133.140+fips1 —
Ubuntu Pro FIPS-updates 20.04 LTS linux-fips 5.4.0-1102.112 —
Ubuntu Pro FIPS-updates 20.04 LTS linux-gcp-fips 5.4.0-1132.141+fips1 —
Ubuntu Pro FIPS-updates 18.04 LTS linux-aws-fips 4.15.0-2113.119 —
Ubuntu Pro FIPS-updates 18.04 LTS linux-azure-fips 4.15.0-2092.98 —
Ubuntu Pro FIPS-updates 18.04 LTS linux-fips 4.15.0-1129.140 —
Ubuntu Pro FIPS-updates 18.04 LTS linux-gcp-fips 4.15.0-2076.81 —
Ubuntu Pro FIPS-preview 22.04 LTS linux-fips +3 No fix yet —
Ubuntu Pro 18.04 LTS linux 4.15.0-231.243 USN-7121-1
Ubuntu Pro 18.04 LTS linux-aws 4.15.0-1175.188 USN-7121-1
Ubuntu Pro 18.04 LTS linux-aws-5.4 5.4.0-1128.138~18.04.1 USN-6896-5
Ubuntu Pro 18.04 LTS linux-azure-4.15 4.15.0-1183.198 USN-7121-1
Ubuntu Pro 18.04 LTS linux-azure-5.4 5.4.0-1133.140~18.04.1 USN-6896-1
Ubuntu Pro 18.04 LTS linux-gcp-4.15 4.15.0-1168.185 USN-7121-1
Ubuntu Pro 18.04 LTS linux-gcp-5.4 5.4.0-1132.141~18.04.1 USN-6896-1
Ubuntu Pro 18.04 LTS linux-hwe-5.4 5.4.0-189.209~18.04.1 USN-6896-2
Ubuntu Pro 18.04 LTS linux-ibm-5.4 5.4.0-1075.80~18.04.1 USN-6896-1
Ubuntu Pro 18.04 LTS linux-kvm 4.15.0-1158.163 USN-7121-1
Ubuntu Pro 18.04 LTS linux-oracle 4.15.0-1137.148 USN-7121-1
Ubuntu Pro 18.04 LTS linux-oracle-5.4 5.4.0-1127.136~18.04.1 USN-6896-2
Ubuntu Pro 18.04 LTS linux-raspi-5.4 5.4.0-1112.124~18.04.1 USN-6896-4
Ubuntu Pro 16.04 LTS linux-aws-hwe 4.15.0-1175.188~16.04.1 USN-7121-1
Ubuntu Pro 16.04 LTS linux-azure 4.15.0-1183.198~16.04.1 USN-7121-1
Ubuntu Pro 16.04 LTS linux-gcp 4.15.0-1168.185~16.04.1 USN-7121-1
Ubuntu Pro 16.04 LTS linux-hwe 4.15.0-231.243~16.04.1 USN-7121-1
Ubuntu Pro 16.04 LTS linux-oracle 4.15.0-1137.148~16.04.1 USN-7121-3
Ubuntu Pro 14.04 LTS linux-azure 4.15.0-1183.198~14.04.1 USN-7121-2
ReleasePackageFixed inAdvisory
RHEL 9 bpftool 7.3.0-427.31.1.el9_4 RHSA-2024:5363
RHEL 9 rv +64 5.14.0-427.31.1.el9_4 RHSA-2024:5363
RHEL 8 kernel-rt +12 4.18.0-553.16.1.rt7.357.el8_10 RHSA-2024:5102
RHEL 8 perf +26 4.18.0-553.16.1.el8_10 RHSA-2024:5101
Show 5 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
RHEL 9.2 EUS bpftool 7.0.0-284.77.1.el9_2 RHSA-2024:5066
RHEL 9.2 EUS kernel-rt +14 5.14.0-284.77.1.rt14.362.el9_2 RHSA-2024:5067
RHEL 9.2 EUS perf +47 5.14.0-284.77.1.el9_2 RHSA-2024:5066
RHEL 8.8 EUS perf +26 4.18.0-477.67.1.el8_8 RHSA-2024:5255
RHEL 8.6 TUS perf +17 4.18.0-372.113.1.el8_6 RHSA-2024:4902
RHEL 8.6 E4S perf +25 4.18.0-372.113.1.el8_6 RHSA-2024:4902
RHEL 8.6 AUS perf +17 4.18.0-372.113.1.el8_6 RHSA-2024:4902

AlmaLinux

Errata ↗
ReleasePackageFixed inAdvisory
AlmaLinux 9 bpftool 7.3.0-427.31.1.el9_4 ALSA-2024:5363
AlmaLinux 9 rv +60 5.14.0-427.31.1.el9_4 ALSA-2024:5363
AlmaLinux 8 kernel-rt +11 4.18.0-553.16.1.rt7.357.el8_10 ALSA-2024:5102
AlmaLinux 8 perf +24 4.18.0-553.16.1.el8_10 ALSA-2024:5101

Rocky Linux

Errata ↗
ReleasePackageFixed inAdvisory
Rocky Linux 9 kernel 5.14.0-427.31.1.el9_4 RLSA-2024:5363
Rocky Linux 8 kernel 4.18.0-553.16.1.el8_10 RXSA-2024:5101, RLSA-2024:5101
Rocky Linux 8 kernel-rt 4.18.0-553.16.1.rt7.357.el8_10 RLSA-2024:5102
ReleasePackageFixed inAdvisory
SLES 15 SP6 kernel-64kb +3 6.4.0-150600.23.7.3 SUSE-SU-2024:2203-1
SLES 15 SP6 kernel-azure +1 6.4.0-150600.8.5.4 SUSE-SU-2024:2135-1
SLES 15 SP6 kernel-default-base 6.4.0-150600.23.7.3.150600.12.2.7 SUSE-SU-2024:2203-1
SLES 15 SP6 kernel-docs 6.4.0-150600.23.7.4 SUSE-SU-2024:2203-1
SLES 15 SP6 kernel-source 6.4.0-150600.23.7.2 SUSE-SU-2024:2203-1
SLES 15 SP6 kernel-syms 6.4.0-150600.23.7.1 SUSE-SU-2024:2203-1
SLES 15 SP6 kernel-syms-azure 6.4.0-150600.8.5.1 SUSE-SU-2024:2135-1
SLES 15 SP5 kernel-64kb +5 5.14.21-150500.55.73.1 SUSE-SU-2024:2939-1
SLES 15 SP5 kernel-azure +2 5.14.21-150500.33.60.1 SUSE-SU-2024:2372-1
SLES 15 SP5 kernel-default-base 5.14.21-150500.55.73.1.150500.6.33.8 SUSE-SU-2024:2939-1
SLES 15 SP5 kernel-docs 5.14.21-150500.55.73.2 SUSE-SU-2024:2939-1
Show 7 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
SLE Micro 6.1 kernel-livepatch-MICRO-6-0-RT_Update_5 1-1.1 SUSE-SU-2025:20249-1
SLE Micro 6.1 kernel-rt +1 6.4.0-25.1 SUSE-SU-2025:20249-1
SLE Micro 6.0 kernel-default-base 6.4.0-17.1.1.51 SUSE-SU-2025:20008-1
SLE Micro 6.0 kernel-livepatch-MICRO-6-0-RT_Update_5 1-1.1 SUSE-SU-2025:20166-1
SLE Micro 6.0 kernel-rt +1 6.4.0-9.1 SUSE-SU-2025:20166-1, SUSE-SU-2025:20028-1
SLE Micro 6.0 kernel-source +2 6.4.0-18.1 SUSE-SU-2025:20008-1
SLE Micro 5.5 kernel-default 5.14.21-150500.55.73.1 SUSE-SU-2024:2939-1
SLE Micro 5.5 kernel-default-base 5.14.21-150500.55.73.1.150500.6.33.8 SUSE-SU-2024:2939-1
SLE Micro 5.5 kernel-rt +1 5.14.21-150500.13.61.1 SUSE-SU-2024:2394-1
SLE Live Patching 15 SP6 kernel-default 6.4.0-150600.23.7.3 SUSE-SU-2024:2203-1
SLE Live Patching 15 SP6 kernel-livepatch-SLE15-SP6-RT_Update_1 1-150600.1.5.1 SUSE-SU-2024:2973-1
SLE Live Patching 15 SP6 kernel-livepatch-SLE15-SP6_Update_1 1-150600.13.3.7 SUSE-SU-2024:2203-1
SLE Live Patching 15 SP5 kernel-default 5.14.21-150500.55.73.1 SUSE-SU-2024:2939-1
SLE Live Patching 15 SP5 kernel-livepatch-SLE15-SP5_Update_17 +1 1-150500.11.3.1 SUSE-SU-2024:2939-1, SUSE-SU-2024:2394-1
SUSE Real Time Module 15 SP6 kernel-rt +3 6.4.0-150600.10.5.1 SUSE-SU-2024:2973-1
SUSE Real Time Module 15 SP5 kernel-rt +3 5.14.21-150500.13.61.1 SUSE-SU-2024:2394-1
ReleasePackageFixed inAdvisory
openSUSE Leap 15.6 dtb-aarch64 +2 6.4.0-150600.23.7.1 SUSE-SU-2024:2203-1
openSUSE Leap 15.6 kernel-64kb +5 6.4.0-150600.23.7.3 SUSE-SU-2024:2203-1
openSUSE Leap 15.6 kernel-azure +1 6.4.0-150600.8.5.4 SUSE-SU-2024:2135-1
openSUSE Leap 15.6 kernel-default-base 6.4.0-150600.23.7.3.150600.12.2.7 SUSE-SU-2024:2203-1
openSUSE Leap 15.6 kernel-docs 6.4.0-150600.23.7.4 SUSE-SU-2024:2203-1
openSUSE Leap 15.6 kernel-rt +3 6.4.0-150600.10.5.1 SUSE-SU-2024:2973-1
openSUSE Leap 15.6 kernel-source 6.4.0-150600.23.7.2 SUSE-SU-2024:2203-1
openSUSE Leap 15.6 kernel-syms-azure 6.4.0-150600.8.5.1 SUSE-SU-2024:2135-1
openSUSE Leap 15.5 dtb-aarch64 +9 5.14.21-150500.55.73.1 SUSE-SU-2024:2939-1
openSUSE Leap 15.5 kernel-azure +2 5.14.21-150500.33.60.1 SUSE-SU-2024:2372-1
openSUSE Leap 15.5 kernel-default-base 5.14.21-150500.55.73.1.150500.6.33.8 SUSE-SU-2024:2939-1
openSUSE Leap 15.5 kernel-docs 5.14.21-150500.55.73.2 SUSE-SU-2024:2939-1
openSUSE Leap 15.5 kernel-rt +3 5.14.21-150500.13.61.1 SUSE-SU-2024:2394-1
Show 1 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
openSUSE Leap Micro 5.5 kernel-default 5.14.21-150500.55.73.1 SUSE-SU-2024:2939-1
openSUSE Leap Micro 5.5 kernel-default-base 5.14.21-150500.55.73.1.150500.6.33.8 SUSE-SU-2024:2939-1

Oracle Linux

ReleasePackageFixed inAdvisory
Oracle Linux 9 bpftool 7.3.0-427.31.1.el9_4 ELSA-2024-5363
Oracle Linux 9 rv +27 5.14.0-427.31.1.el9_4 ELSA-2024-5363
Oracle Linux 8 perf +19 4.18.0-553.16.1.el8_10 ELSA-2024-5101

Advisories 50

References