Skip to content
OpenAdvisories
Unscored CVE-2021-47101 EUVD-2021-33749GHSA-72gm-6qcq-3xmp

asix: fix uninit-value in asix_mdio_read()

Published Mar 4, 2024 · Updated May 11, 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-5.19 Package: linux-aws-5.3 Package: linux-aws-5.4 Package: linux-aws-5.8 Package: linux-aws-6.2 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-5.19 Package: linux-azure-5.3 Package: linux-azure-5.4 Package: linux-azure-5.8 Package: linux-azure-6.2 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-5.19 Package: linux-gcp-5.3 Package: linux-gcp-5.4 Package: linux-gcp-5.8 Package: linux-gcp-6.2 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-5.4 Package: linux-hwe Package: linux-hwe-5.11 Package: linux-hwe-5.13 Package: linux-hwe-5.19 Package: linux-hwe-5.4 Package: linux-hwe-5.8 Package: linux-hwe-6.2 Package: linux-hwe-edge Package: linux-ibm Package: linux-ibm-5.4 Package: linux-intel-5.13 Package: linux-intel-iot-realtime Package: linux-iot Package: linux-kvm Package: linux-lowlatency-hwe-5.19 Package: linux-lowlatency-hwe-6.2 Package: linux-nvidia-6.2 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-oracle Package: linux-oracle-5.0 Package: linux-oracle-5.11 Package: linux-oracle-5.13 Package: linux-oracle-5.3 Package: linux-oracle-5.4 Package: linux-oracle-5.8 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-5.19 Package: linux-riscv-5.8 Package: linux-starfive-5.19 Package: linux-starfive-6.2 Package: linux-vmware Package: linux-xilinx-zynqmp Platform: Linux Ecosystem: Debian Ecosystem: Ubuntu

Description

In the Linux kernel, the following vulnerability has been resolved:

asix: fix uninit-value in asix_mdio_read()

asix_read_cmd() may read less than sizeof(smsr) bytes and in this case
smsr will be uninitialized.

Fail log:
BUG: KMSAN: uninit-value in asix_check_host_enable drivers/net/usb/asix_common.c:82 [inline]
BUG: KMSAN: uninit-value in asix_check_host_enable drivers/net/usb/asix_common.c:82 [inline] drivers/net/usb/asix_common.c:497
BUG: KMSAN: uninit-value in asix_mdio_read+0x3c1/0xb00 drivers/net/usb/asix_common.c:497 drivers/net/usb/asix_common.c:497
asix_check_host_enable drivers/net/usb/asix_common.c:82 [inline]
asix_check_host_enable drivers/net/usb/asix_common.c:82 [inline] drivers/net/usb/asix_common.c:497
asix_mdio_read+0x3c1/0xb00 drivers/net/usb/asix_common.c:497 drivers/net/usb/asix_common.c:497

Affected products

VendorProductAffectedFixed
Linux Linux 4.9 5.15.12

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 5.15.15-1 —
Debian 13 linux 5.15.15-1 —
Debian 12 linux 5.15.15-1 —
ReleasePackageFixed inAdvisory
Ubuntu 24.04 LTS linux-raspi-realtime No fix yet —
Ubuntu 22.04 LTS linux-riscv +22 No fix yet —
Ubuntu 20.04 LTS linux 5.4.0-204.224 USN-7173-1
Ubuntu 20.04 LTS linux-aws 5.4.0-1137.147 USN-7173-2
Ubuntu 20.04 LTS linux-azure 5.4.0-1142.149 USN-7195-1
Ubuntu 20.04 LTS linux-bluefield 5.4.0-1097.104 USN-7173-2
Ubuntu 20.04 LTS linux-gcp 5.4.0-1141.150 USN-7173-1
Ubuntu 20.04 LTS linux-gke +27 No fix yet —
Ubuntu 20.04 LTS linux-ibm 5.4.0-1084.89 USN-7173-2
Ubuntu 20.04 LTS linux-iot 5.4.0-1048.51 USN-7413-1
Ubuntu 20.04 LTS linux-kvm 5.4.0-1125.133 USN-7173-1
Ubuntu 20.04 LTS linux-oracle 5.4.0-1136.145 USN-7173-2
Ubuntu 20.04 LTS linux-raspi 5.4.0-1121.133 USN-7173-1
Ubuntu 20.04 LTS linux-xilinx-zynqmp 5.4.0-1056.60 USN-7173-2
Ubuntu 18.04 LTS linux-gcp +14 No fix yet —
Ubuntu 16.04 LTS linux-hwe-edge No fix yet —
Show 7 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
Ubuntu Pro FIPS 20.04 LTS linux-fips +3 No fix yet —
Ubuntu Pro FIPS 18.04 LTS linux-fips +3 No fix yet —
Ubuntu Pro FIPS-updates 20.04 LTS linux-aws-fips 5.4.0-1137.147+fips1 —
Ubuntu Pro FIPS-updates 20.04 LTS linux-azure-fips 5.4.0-1142.149+fips1 —
Ubuntu Pro FIPS-updates 20.04 LTS linux-fips 5.4.0-1111.121 —
Ubuntu Pro FIPS-updates 20.04 LTS linux-gcp-fips 5.4.0-1141.150+fips1 —
Ubuntu Pro FIPS-updates 18.04 LTS linux-aws-fips 4.15.0-2117.123 USN-7428-2
Ubuntu Pro FIPS-updates 18.04 LTS linux-azure-fips 4.15.0-2096.102 USN-7428-2
Ubuntu Pro FIPS-updates 18.04 LTS linux-fips 4.15.0-1134.145 USN-7428-2
Ubuntu Pro FIPS-updates 18.04 LTS linux-gcp-fips 4.15.0-2080.86 USN-7428-2
Ubuntu Pro 18.04 LTS linux 4.15.0-236.248 USN-7428-1
Ubuntu Pro 18.04 LTS linux-aws 4.15.0-1179.192 USN-7428-1
Ubuntu Pro 18.04 LTS linux-aws-5.4 5.4.0-1137.147~18.04.1 USN-7173-2
Ubuntu Pro 18.04 LTS linux-azure-4.15 4.15.0-1187.202 USN-7428-1
Ubuntu Pro 18.04 LTS linux-azure-5.4 5.4.0-1142.149~18.04.1 USN-7195-2
Ubuntu Pro 18.04 LTS linux-gcp-4.15 4.15.0-1172.189 USN-7428-1
Ubuntu Pro 18.04 LTS linux-gcp-5.4 5.4.0-1141.150~18.04.1 USN-7173-1
Ubuntu Pro 18.04 LTS linux-hwe-5.4 5.4.0-204.224~18.04.1 USN-7173-1
Ubuntu Pro 18.04 LTS linux-ibm-5.4 5.4.0-1084.89~18.04.1 USN-7173-2
Ubuntu Pro 18.04 LTS linux-kvm 4.15.0-1162.167 USN-7428-1
Ubuntu Pro 18.04 LTS linux-oracle 4.15.0-1141.152 USN-7428-1
Ubuntu Pro 18.04 LTS linux-oracle-5.4 5.4.0-1136.145~18.04.1 USN-7173-2
Ubuntu Pro 18.04 LTS linux-raspi-5.4 5.4.0-1121.133~18.04.1 USN-7173-3
Ubuntu Pro 16.04 LTS linux-aws-hwe 4.15.0-1179.192~16.04.1 USN-7428-1
Ubuntu Pro 16.04 LTS linux-azure 4.15.0-1187.202~16.04.1 USN-7428-1
Ubuntu Pro 16.04 LTS linux-gcp 4.15.0-1172.189~16.04.1 USN-7428-1
Ubuntu Pro 16.04 LTS linux-hwe 4.15.0-236.248~16.04.1 USN-7428-1
Ubuntu Pro 16.04 LTS linux-oracle 4.15.0-1141.152~16.04.1 USN-7428-1
Ubuntu Pro 14.04 LTS linux-azure 4.15.0-1187.202~14.04.1 USN-7428-1
ReleasePackageFixed inAdvisory
RHEL 9 bpftool 7.4.0-503.11.1.el9_5 RHSA-2024:9315
RHEL 9 rv +67 5.14.0-503.11.1.el9_5 RHSA-2024:9315
RHEL 8 kernel-rt +12 4.18.0-553.22.1.rt7.363.el8_10 RHSA-2024:7001
RHEL 8 perf +26 4.18.0-553.22.1.el8_10 RHSA-2024:7000
Show 1 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
RHEL 9.4 EUS bpftool 7.3.0-427.65.1.el9_4 RHSA-2025:3935
RHEL 9.4 EUS rv +64 5.14.0-427.65.1.el9_4 RHSA-2025:3935

AlmaLinux

Errata ↗
ReleasePackageFixed inAdvisory
AlmaLinux 8 kernel-rt +11 4.18.0-553.22.1.rt7.363.el8_10 ALSA-2024:7001
AlmaLinux 8 perf +24 4.18.0-553.22.1.el8_10 ALSA-2024:7000

Rocky Linux

Errata ↗
ReleasePackageFixed inAdvisory
Rocky Linux 8 kernel 4.18.0-553.22.1.el8_10 RLSA-2024:7000
Rocky Linux 8 kernel-rt 4.18.0-553.22.1.rt7.363.el8_10 RLSA-2024:7001
ReleasePackageFixed inAdvisory
SLES 15 SP5 kernel-64kb +6 5.14.21-150500.55.59.1 SUSE-SU-2024:1480-1
SLES 15 SP5 kernel-azure +2 5.14.21-150500.33.48.1 SUSE-SU-2024:1490-1
SLES 15 SP5 kernel-default-base 5.14.21-150500.55.59.1.150500.6.25.7 SUSE-SU-2024:1480-1
SLES 15 SP4 kernel-64kb +6 5.14.21-150400.24.116.1 SUSE-SU-2024:1321-1
SLES 15 SP4 kernel-default-base 5.14.21-150400.24.116.1.150400.24.54.5 SUSE-SU-2024:1321-1
SLES 15 SP3 kernel-64kb +7 5.3.18-150300.59.158.1 SUSE-SU-2024:1489-1
SLES 15 SP3 kernel-default-base 5.3.18-150300.59.158.1.150300.18.92.5 SUSE-SU-2024:1489-1
SLES 12 SP5 kernel-azure +2 4.12.14-16.182.1 SUSE-SU-2024:1643-1
SLES 12 SP5 kernel-docs +4 4.12.14-122.216.1 SUSE-SU-2024:1870-1
Show 19 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
SLES for SAP 15 SP4 kernel-default-base 5.14.21-150400.24.116.1.150400.24.54.5 SUSE-SU-2024:1321-1
SLES for SAP 15 SP4 kernel-docs +4 5.14.21-150400.24.116.1 SUSE-SU-2024:1321-1
SLES for SAP 15 SP3 kernel-default-base 5.3.18-150300.59.158.1.150300.18.92.5 SUSE-SU-2024:1489-1
SLES for SAP 15 SP3 kernel-docs +5 5.3.18-150300.59.158.1 SUSE-SU-2024:1489-1
SLES for SAP 12 SP5 kernel-azure +2 4.12.14-16.182.1 SUSE-SU-2024:1643-1
SLES for SAP 12 SP5 kernel-syms +2 4.12.14-122.216.1 SUSE-SU-2024:1870-1
SLE Real Time 12 SP5 kernel-rt +3 4.12.14-10.182.1 SUSE-SU-2024:1646-1
SLE Micro 5.5 kernel-default 5.14.21-150500.55.59.1 SUSE-SU-2024:1480-1
SLE Micro 5.5 kernel-default-base 5.14.21-150500.55.59.1.150500.6.25.7 SUSE-SU-2024:1480-1
SLE Micro 5.5 kernel-rt +1 5.14.21-150500.13.47.1 SUSE-SU-2024:1466-1
SLE Micro 5.4 kernel-default 5.14.21-150400.24.116.1 SUSE-SU-2024:1321-1
SLE Micro 5.4 kernel-default-base 5.14.21-150400.24.116.1.150400.24.54.5 SUSE-SU-2024:1321-1
SLE Micro 5.4 kernel-rt +1 5.14.21-150400.15.76.1 SUSE-SU-2024:1320-1
SLE Micro 5.3 kernel-default 5.14.21-150400.24.116.1 SUSE-SU-2024:1321-1
SLE Micro 5.3 kernel-default-base 5.14.21-150400.24.116.1.150400.24.54.5 SUSE-SU-2024:1321-1
SLE Micro 5.3 kernel-rt +1 5.14.21-150400.15.76.1 SUSE-SU-2024:1320-1
SLE Micro 5.2 kernel-default 5.3.18-150300.59.158.1 SUSE-SU-2024:1489-1
SLE Micro 5.2 kernel-default-base 5.3.18-150300.59.158.1.150300.18.92.5 SUSE-SU-2024:1489-1
SLE Micro 5.2 kernel-rt +1 5.3.18-150300.166.1 SUSE-SU-2024:1465-1
SLE Micro 5.1 kernel-default 5.3.18-150300.59.158.1 SUSE-SU-2024:1489-1
SLE Micro 5.1 kernel-default-base 5.3.18-150300.59.158.1.150300.18.92.5 SUSE-SU-2024:1489-1
SLE Micro 5.1 kernel-rt +1 5.3.18-150300.166.1 SUSE-SU-2024:1465-1
SLE Live Patching 15 SP5 kernel-default 5.14.21-150500.55.59.1 SUSE-SU-2024:1480-1
SLE Live Patching 15 SP5 kernel-livepatch-SLE15-SP5-RT_Update_13 1-150500.11.3.1 SUSE-SU-2024:1466-1
SLE Live Patching 15 SP5 kernel-livepatch-SLE15-SP5_Update_12 1-150500.11.7.1 SUSE-SU-2024:1480-1
SLE Live Patching 15 SP4 kernel-default 5.14.21-150400.24.116.1 SUSE-SU-2024:1321-1
SLE Live Patching 15 SP4 kernel-livepatch-SLE15-SP4_Update_25 1-150400.9.5.1 SUSE-SU-2024:1321-1
SLE Live Patching 15 SP3 kernel-default 5.3.18-150300.59.158.1 SUSE-SU-2024:1489-1
SLE Live Patching 15 SP3 kernel-livepatch-SLE15-SP3_Update_43 1-150300.7.3.5 SUSE-SU-2024:1489-1
SLE Live Patching 12 SP5 kernel-default 4.12.14-122.216.1 SUSE-SU-2024:1870-1
SLE Live Patching 12 SP5 kgraft-patch-SLE12-SP5_Update_56 1-8.3.1 SUSE-SU-2024:1870-1
SLE HPC 15 SP4 kernel-64kb +5 5.14.21-150400.24.116.1 SUSE-SU-2024:1321-1
SLE HPC 15 SP4 kernel-default-base 5.14.21-150400.24.116.1.150400.24.54.5 SUSE-SU-2024:1321-1
SLE HPC 15 SP3 kernel-64kb +6 5.3.18-150300.59.158.1 SUSE-SU-2024:1489-1
SLE HPC 15 SP3 kernel-default-base 5.3.18-150300.59.158.1.150300.18.92.5 SUSE-SU-2024:1489-1
SUSE Real Time Module 15 SP5 kernel-rt +3 5.14.21-150500.13.47.1 SUSE-SU-2024:1466-1
SUSE Manager Server 4.3 kernel-default-base 5.14.21-150400.24.116.1.150400.24.54.5 SUSE-SU-2024:1321-1
SUSE Manager Server 4.3 kernel-syms +3 5.14.21-150400.24.116.1 SUSE-SU-2024:1321-1
SUSE Manager Proxy 4.3 kernel-default-base 5.14.21-150400.24.116.1.150400.24.54.5 SUSE-SU-2024:1321-1
SUSE Manager Proxy 4.3 kernel-syms +2 5.14.21-150400.24.116.1 SUSE-SU-2024:1321-1
SUSE Enterprise Storage 7.1 kernel-64kb +6 5.3.18-150300.59.158.1 SUSE-SU-2024:1489-1
SUSE Enterprise Storage 7.1 kernel-default-base 5.3.18-150300.59.158.1.150300.18.92.5 SUSE-SU-2024:1489-1
ReleasePackageFixed inAdvisory
openSUSE Leap 15.5 dtb-aarch64 +10 5.14.21-150500.55.59.1 SUSE-SU-2024:1480-1
openSUSE Leap 15.5 kernel-azure +2 5.14.21-150500.33.48.1 SUSE-SU-2024:1490-1
openSUSE Leap 15.5 kernel-default-base 5.14.21-150500.55.59.1.150500.6.25.7 SUSE-SU-2024:1480-1
openSUSE Leap 15.5 kernel-rt +3 5.14.21-150500.13.47.1 SUSE-SU-2024:1466-1
Show 2 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
openSUSE Leap Micro 5.4 kernel-default 5.14.21-150400.24.116.1 SUSE-SU-2024:1321-1
openSUSE Leap Micro 5.4 kernel-default-base 5.14.21-150400.24.116.1.150400.24.54.5 SUSE-SU-2024:1321-1
openSUSE Leap Micro 5.4 kernel-rt 5.14.21-150400.15.76.1 SUSE-SU-2024:1320-1
openSUSE Leap Micro 5.3 kernel-default 5.14.21-150400.24.116.1 SUSE-SU-2024:1321-1
openSUSE Leap Micro 5.3 kernel-default-base 5.14.21-150400.24.116.1.150400.24.54.5 SUSE-SU-2024:1321-1
openSUSE Leap Micro 5.3 kernel-rt 5.14.21-150400.15.76.1 SUSE-SU-2024:1320-1

Oracle Linux

ReleasePackageFixed inAdvisory
Oracle Linux 9 bpftool 7.4.0-503.11.1.el9_5 ELSA-2024-9315
Oracle Linux 9 rv +28 5.14.0-503.11.1.el9_5 ELSA-2024-9315
Oracle Linux 8 perf +19 4.18.0-553.22.1.el8_10 ELSA-2024-7000

Advisories 29

References