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Unscored CVE-2021-46932 EUVD-2021-33580GHSA-7674-fj4m-c42f

Input: appletouch - initialize work before device registration

Published Feb 27, 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-kvm Package: linux-lowlatency-hwe-5.19 Package: linux-lowlatency-hwe-6.2 Package: linux-lts-xenial 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 Platform: Linux Ecosystem: Debian Ecosystem: Ubuntu

Description

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

Input: appletouch - initialize work before device registration

Syzbot has reported warning in __flush_work(). This warning is caused by
work->func == NULL, which means missing work initialization.

This may happen, since input_dev->close() calls
cancel_work_sync(&dev->work), but dev->work initalization happens _after_
input_register_device() call.

So this patch moves dev->work initialization before registering input
device

Affected products

VendorProductAffectedFixed
Linux Linux 2.6.23 4.4.298

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 5.4.0-105.119 —
Ubuntu 20.04 LTS linux-aws 5.4.0-1069.73 —
Ubuntu 20.04 LTS linux-azure 5.4.0-1073.76 —
Ubuntu 20.04 LTS linux-bluefield 5.4.0-1032.35 —
Ubuntu 20.04 LTS linux-gcp 5.4.0-1068.72 —
Ubuntu 20.04 LTS linux-gke +26 No fix yet —
Ubuntu 20.04 LTS linux-gkeop 5.4.0-1037.38 —
Ubuntu 20.04 LTS linux-ibm 5.4.0-1018.20 —
Ubuntu 20.04 LTS linux-kvm 5.4.0-1059.62 —
Ubuntu 20.04 LTS linux-oracle 5.4.0-1067.72 —
Ubuntu 20.04 LTS linux-raspi 5.4.0-1056.63 —
Ubuntu 18.04 LTS linux 4.15.0-173.182 —
Ubuntu 18.04 LTS linux-aws 4.15.0-1124.133 —
Ubuntu 18.04 LTS linux-aws-5.4 5.4.0-1069.73~18.04.1 —
Ubuntu 18.04 LTS linux-azure-4.15 4.15.0-1134.147 —
Ubuntu 18.04 LTS linux-azure-5.4 5.4.0-1073.76~18.04.1 —
Ubuntu 18.04 LTS linux-gcp +14 No fix yet —
Ubuntu 18.04 LTS linux-gcp-4.15 4.15.0-1119.133 —
Ubuntu 18.04 LTS linux-gcp-5.4 5.4.0-1068.72~18.04.1 —
Ubuntu 18.04 LTS linux-hwe-5.4 5.4.0-105.119~18.04.1 —
Ubuntu 18.04 LTS linux-ibm-5.4 5.4.0-1018.20~18.04.1 —
Ubuntu 18.04 LTS linux-kvm 4.15.0-1110.113 —
Ubuntu 18.04 LTS linux-oracle 4.15.0-1090.99 —
Ubuntu 18.04 LTS linux-oracle-5.4 5.4.0-1067.72~18.04.1 —
Ubuntu 18.04 LTS linux-raspi-5.4 5.4.0-1056.63~18.04.1 —
Ubuntu 16.04 LTS linux-hwe-edge No fix yet —
Show 8 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 16.04 LTS linux-fips No fix yet —
Ubuntu Pro FIPS-updates 20.04 LTS linux-aws-fips 5.4.0-1069.73+fips2 —
Ubuntu Pro FIPS-updates 20.04 LTS linux-azure-fips 5.4.0-1073.76+fips1 —
Ubuntu Pro FIPS-updates 20.04 LTS linux-fips 5.4.0-1046.52 —
Ubuntu Pro FIPS-updates 20.04 LTS linux-gcp-fips 5.4.0-1067.71~20.04.1 —
Ubuntu Pro FIPS-updates 18.04 LTS linux-aws-fips 4.15.0-2064.67 —
Ubuntu Pro FIPS-updates 18.04 LTS linux-azure-fips 4.15.0-2046.50 —
Ubuntu Pro FIPS-updates 18.04 LTS linux-fips 4.15.0-1081.90 —
Ubuntu Pro FIPS-updates 18.04 LTS linux-gcp-fips 4.15.0-2029.32 —
Ubuntu Pro FIPS-updates 16.04 LTS linux-fips 4.4.0-1103.110 —
Ubuntu Pro 16.04 LTS linux 4.4.0-257.291 USN-6938-1
Ubuntu Pro 16.04 LTS linux-aws 4.4.0-1172.187 USN-6938-1
Ubuntu Pro 16.04 LTS linux-aws-hwe 4.15.0-1124.133~16.04.1 —
Ubuntu Pro 16.04 LTS linux-azure 4.15.0-1134.147~16.04.1 —
Ubuntu Pro 16.04 LTS linux-gcp 4.15.0-1119.133~16.04.1 —
Ubuntu Pro 16.04 LTS linux-hwe 4.15.0-173.182~16.04.1 —
Ubuntu Pro 16.04 LTS linux-kvm 4.4.0-1135.145 USN-6938-1
Ubuntu Pro 16.04 LTS linux-oracle 4.15.0-1090.99~16.04.1 —
Ubuntu Pro 14.04 LTS linux No fix yet —
Ubuntu Pro 14.04 LTS linux-aws 4.4.0-1134.140 USN-6938-1
Ubuntu Pro 14.04 LTS linux-azure 4.15.0-1134.147~14.04.1 —
Ubuntu Pro 14.04 LTS linux-lts-xenial 4.4.0-257.291~14.04.1 USN-6938-1
ReleasePackageFixed inAdvisory
SLES 15 SP5 kernel-64kb +6 5.14.21-150500.55.52.1 SUSE-SU-2024:0858-1
SLES 15 SP5 kernel-azure +2 5.14.21-150500.33.37.1 SUSE-SU-2024:0855-1
SLES 15 SP5 kernel-default-base 5.14.21-150500.55.52.1.150500.6.23.1 SUSE-SU-2024:0858-1
SLES 15 SP4 kernel-64kb +3 5.14.21-150400.24.111.2 SUSE-SU-2024:0900-1
SLES 15 SP4 kernel-default-base 5.14.21-150400.24.111.2.150400.24.52.1 SUSE-SU-2024:0900-1
SLES 15 SP4 kernel-syms +2 5.14.21-150400.24.111.1 SUSE-SU-2024:0900-1
SLES 15 SP3 kernel-64kb +6 5.3.18-150300.59.153.2 SUSE-SU-2024:0857-1
SLES 15 SP3 kernel-default-base 5.3.18-150300.59.153.2.150300.18.90.2 SUSE-SU-2024:0857-1
SLES 15 SP3 kernel-syms 5.3.18-150300.59.153.1 SUSE-SU-2024:0857-1
SLES 15 SP2 kernel-default-base 5.3.18-150200.24.183.1.150200.9.93.2 SUSE-SU-2024:0926-1
SLES 15 SP2 kernel-docs +5 5.3.18-150200.24.183.1 SUSE-SU-2024:0926-1
SLES 12 SP5 kernel-azure +2 4.12.14-16.173.1 SUSE-SU-2024:0975-1
SLES 12 SP5 kernel-docs +3 4.12.14-122.201.1 SUSE-SU-2024:0925-1
SLES 12 SP5 kernel-obs-build 4.12.14-122.201.2 SUSE-SU-2024:0925-1
Show 23 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
SLES 11 SP4 kernel-ec2 +5 3.0.101-108.153.1 SUSE-SU-2024:1669-1
SLES for SAP 15 SP4 kernel-default-base 5.14.21-150400.24.111.2.150400.24.52.1 SUSE-SU-2024:0900-1
SLES for SAP 15 SP4 kernel-docs +1 5.14.21-150400.24.111.2 SUSE-SU-2024:0900-1
SLES for SAP 15 SP4 kernel-syms +2 5.14.21-150400.24.111.1 SUSE-SU-2024:0900-1
SLES for SAP 15 SP3 kernel-default-base 5.3.18-150300.59.153.2.150300.18.90.2 SUSE-SU-2024:0857-1
SLES for SAP 15 SP3 kernel-docs +4 5.3.18-150300.59.153.2 SUSE-SU-2024:0857-1
SLES for SAP 15 SP3 kernel-syms 5.3.18-150300.59.153.1 SUSE-SU-2024:0857-1
SLES for SAP 15 SP2 kernel-default-base 5.3.18-150200.24.183.1.150200.9.93.2 SUSE-SU-2024:0926-1
SLES for SAP 15 SP2 kernel-docs +5 5.3.18-150200.24.183.1 SUSE-SU-2024:0926-1
SLES for SAP 12 SP5 kernel-azure +2 4.12.14-16.173.1 SUSE-SU-2024:0975-1
SLES for SAP 12 SP5 kernel-syms +2 4.12.14-122.201.1 SUSE-SU-2024:0925-1
SLE Real Time 12 SP5 kernel-rt +3 4.12.14-10.171.1 SUSE-SU-2024:0976-1
SLE Micro 5.5 kernel-default 5.14.21-150500.55.52.1 SUSE-SU-2024:0858-1
SLE Micro 5.5 kernel-default-base 5.14.21-150500.55.52.1.150500.6.23.1 SUSE-SU-2024:0858-1
SLE Micro 5.5 kernel-rt +1 5.14.21-150500.13.38.1 SUSE-SU-2024:0910-1
SLE Micro 5.4 kernel-default 5.14.21-150400.24.111.2 SUSE-SU-2024:0900-1
SLE Micro 5.4 kernel-default-base 5.14.21-150400.24.111.2.150400.24.52.1 SUSE-SU-2024:0900-1
SLE Micro 5.4 kernel-rt +1 5.14.21-150400.15.71.1 SUSE-SU-2024:0977-1
SLE Micro 5.3 kernel-default 5.14.21-150400.24.111.2 SUSE-SU-2024:0900-1
SLE Micro 5.3 kernel-default-base 5.14.21-150400.24.111.2.150400.24.52.1 SUSE-SU-2024:0900-1
SLE Micro 5.3 kernel-rt +1 5.14.21-150400.15.71.1 SUSE-SU-2024:0977-1
SLE Micro 5.2 kernel-default 5.3.18-150300.59.153.2 SUSE-SU-2024:0857-1
SLE Micro 5.2 kernel-default-base 5.3.18-150300.59.153.2.150300.18.90.2 SUSE-SU-2024:0857-1
SLE Micro 5.2 kernel-rt +1 5.3.18-150300.161.1 SUSE-SU-2024:0856-1
SLE Micro 5.1 kernel-default 5.3.18-150300.59.153.2 SUSE-SU-2024:0857-1
SLE Micro 5.1 kernel-default-base 5.3.18-150300.59.153.2.150300.18.90.2 SUSE-SU-2024:0857-1
SLE Micro 5.1 kernel-rt +1 5.3.18-150300.161.1 SUSE-SU-2024:0856-1
SLE Live Patching 15 SP5 kernel-default 5.14.21-150500.55.52.1 SUSE-SU-2024:0858-1
SLE Live Patching 15 SP5 kernel-livepatch-SLE15-SP5_Update_11 +1 1-150500.11.3.1 SUSE-SU-2024:0910-1, SUSE-SU-2024:0858-1
SLE Live Patching 15 SP4 kernel-default 5.14.21-150400.24.111.2 SUSE-SU-2024:0900-1
SLE Live Patching 15 SP4 kernel-livepatch-SLE15-SP4-RT_Update_19 1-150400.1.3.1 SUSE-SU-2024:0977-1
SLE Live Patching 15 SP4 kernel-livepatch-SLE15-SP4_Update_24 1-150400.9.3.1 SUSE-SU-2024:0900-1
SLE Live Patching 15 SP3 kernel-default 5.3.18-150300.59.153.2 SUSE-SU-2024:0857-1
SLE Live Patching 15 SP3 kernel-livepatch-SLE15-SP3_Update_42 1-150300.7.3.2 SUSE-SU-2024:0857-1
SLE Live Patching 15 SP2 kernel-default 5.3.18-150200.24.183.1 SUSE-SU-2024:0926-1
SLE Live Patching 15 SP2 kernel-livepatch-SLE15-SP2_Update_46 1-150200.5.3.2 SUSE-SU-2024:0926-1
SLE Live Patching 12 SP5 kernel-default 4.12.14-122.201.1 SUSE-SU-2024:0925-1
SLE Live Patching 12 SP5 kgraft-patch-SLE12-SP5_Update_54 1-8.7.1 SUSE-SU-2024:0925-1
SLE HPC 15 SP4 kernel-64kb +2 5.14.21-150400.24.111.2 SUSE-SU-2024:0900-1
SLE HPC 15 SP4 kernel-default-base 5.14.21-150400.24.111.2.150400.24.52.1 SUSE-SU-2024:0900-1
SLE HPC 15 SP4 kernel-syms +2 5.14.21-150400.24.111.1 SUSE-SU-2024:0900-1
SLE HPC 15 SP3 kernel-64kb +5 5.3.18-150300.59.153.2 SUSE-SU-2024:0857-1
SLE HPC 15 SP3 kernel-default-base 5.3.18-150300.59.153.2.150300.18.90.2 SUSE-SU-2024:0857-1
SLE HPC 15 SP3 kernel-syms 5.3.18-150300.59.153.1 SUSE-SU-2024:0857-1
SLE HPC 15 SP2 kernel-default-base 5.3.18-150200.24.183.1.150200.9.93.2 SUSE-SU-2024:0926-1
SLE HPC 15 SP2 kernel-docs +5 5.3.18-150200.24.183.1 SUSE-SU-2024:0926-1
SUSE Real Time Module 15 SP5 kernel-rt +3 5.14.21-150500.13.38.1 SUSE-SU-2024:0910-1
SUSE Manager Server 4.3 kernel-default +1 5.14.21-150400.24.111.2 SUSE-SU-2024:0900-2, SUSE-SU-2024:0900-1
SUSE Manager Server 4.3 kernel-default-base 5.14.21-150400.24.111.2.150400.24.52.1 SUSE-SU-2024:0900-2, SUSE-SU-2024:0900-1
SUSE Manager Server 4.3 kernel-syms +1 5.14.21-150400.24.111.1 SUSE-SU-2024:0900-2, SUSE-SU-2024:0900-1
SUSE Manager Proxy 4.3 kernel-default 5.14.21-150400.24.111.2 SUSE-SU-2024:0900-2, SUSE-SU-2024:0900-1
SUSE Manager Proxy 4.3 kernel-default-base 5.14.21-150400.24.111.2.150400.24.52.1 SUSE-SU-2024:0900-2, SUSE-SU-2024:0900-1
SUSE Manager Proxy 4.3 kernel-syms +1 5.14.21-150400.24.111.1 SUSE-SU-2024:0900-2, SUSE-SU-2024:0900-1
SUSE Enterprise Storage 7.1 kernel-64kb +5 5.3.18-150300.59.153.2 SUSE-SU-2024:0857-1
SUSE Enterprise Storage 7.1 kernel-default-base 5.3.18-150300.59.153.2.150300.18.90.2 SUSE-SU-2024:0857-1
SUSE Enterprise Storage 7.1 kernel-syms 5.3.18-150300.59.153.1 SUSE-SU-2024:0857-1
ReleasePackageFixed inAdvisory
openSUSE Leap 15.5 dtb-aarch64 +10 5.14.21-150500.55.52.1 SUSE-SU-2024:0858-1
openSUSE Leap 15.5 kernel-azure +2 5.14.21-150500.33.37.1 SUSE-SU-2024:0855-1
openSUSE Leap 15.5 kernel-default-base 5.14.21-150500.55.52.1.150500.6.23.1 SUSE-SU-2024:0858-1
openSUSE Leap 15.5 kernel-rt +3 5.14.21-150500.13.38.1 SUSE-SU-2024:0910-1
Show 2 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
openSUSE Leap Micro 5.4 kernel-default 5.14.21-150400.24.111.2 SUSE-SU-2024:0900-1
openSUSE Leap Micro 5.4 kernel-default-base 5.14.21-150400.24.111.2.150400.24.52.1 SUSE-SU-2024:0900-1
openSUSE Leap Micro 5.4 kernel-rt 5.14.21-150400.15.71.1 SUSE-SU-2024:0977-1
openSUSE Leap Micro 5.3 kernel-default 5.14.21-150400.24.111.2 SUSE-SU-2024:0900-1
openSUSE Leap Micro 5.3 kernel-default-base 5.14.21-150400.24.111.2.150400.24.52.1 SUSE-SU-2024:0900-1
openSUSE Leap Micro 5.3 kernel-rt 5.14.21-150400.15.71.1 SUSE-SU-2024:0977-1

Advisories 15

References