7.4
CWE
362 416
Advisory Published
Updated

CVE-2021-4083: Race Condition

First published: Fri Dec 03 2021(Updated: )

A read-after-free memory flaw was found in the Linux kernel's garbage collection for Unix domain socket file handlers in the way users call close() and fget() simultaneously and can potentially trigger a race condition. This flaw allows a local user to crash the system or escalate their privileges on the system. This flaw affects Linux kernel versions prior to 5.16-rc4.

Credit: secalert@redhat.com secalert@redhat.com secalert@redhat.com

Affected SoftwareAffected VersionHow to fix
Linux Linux kernel<4.4.294
Linux Linux kernel>=4.5<4.9.292
Linux Linux kernel>=4.10<4.14.257
Linux Linux kernel>=4.15<4.19.220
Linux Linux kernel>=4.20<5.4.164
Linux Linux kernel>=5.5.0<5.10.84
Linux Linux kernel>=5.11<5.15.7
Linux Linux kernel=5.16-rc1
Linux Linux kernel=5.16-rc2
Linux Linux kernel=5.16-rc3
Netapp H410c Firmware
Netapp H410c
Apple macOS Ventura
Apple macOS Big Sur
Apple macOS Big Sur
Apple macOS Ventura
Apple macOS Big Sur
Apple macOS Monterey
Netapp H300e Firmware
Netapp H300e
Netapp H500e Firmware
Netapp H500e
Netapp H700e Firmware
Netapp H700e
Apple macOS Monterey
Apple macOS Monterey
Debian Debian Linux=9.0
Debian Debian Linux=10.0
Netapp Hci Management Node
Netapp Solidfire
Oracle Communications Cloud Native Core Binding Support Function=22.1.3
Oracle Communications Cloud Native Core Network Exposure Function=22.1.1
Oracle Communications Cloud Native Core Policy=22.2.0
redhat/kernel-rt<0:3.10.0-1160.62.1.rt56.1203.el7
0:3.10.0-1160.62.1.rt56.1203.el7
redhat/kernel<0:3.10.0-1160.62.1.el7
0:3.10.0-1160.62.1.el7
redhat/kernel<0:3.10.0-514.101.1.el7
0:3.10.0-514.101.1.el7
redhat/kernel<0:3.10.0-693.99.1.el7
0:3.10.0-693.99.1.el7
redhat/kernel<0:3.10.0-957.92.1.el7
0:3.10.0-957.92.1.el7
redhat/kernel<0:3.10.0-1062.66.1.el7
0:3.10.0-1062.66.1.el7
redhat/kernel-rt<0:4.18.0-372.9.1.rt7.166.el8
0:4.18.0-372.9.1.rt7.166.el8
redhat/kernel<0:4.18.0-372.9.1.el8
0:4.18.0-372.9.1.el8
redhat/kernel<0:4.18.0-147.64.1.el8_1
0:4.18.0-147.64.1.el8_1
redhat/kernel-rt<0:4.18.0-193.79.1.rt13.129.el8_2
0:4.18.0-193.79.1.rt13.129.el8_2
redhat/kernel<0:4.18.0-193.79.1.el8_2
0:4.18.0-193.79.1.el8_2
redhat/kernel-rt<0:4.18.0-305.45.1.rt7.117.el8_4
0:4.18.0-305.45.1.rt7.117.el8_4
redhat/kernel<0:4.18.0-305.45.1.el8_4
0:4.18.0-305.45.1.el8_4
redhat/redhat-virtualization-host<0:4.3.22-20220330.1.el7_9
0:4.3.22-20220330.1.el7_9
Google Android
ubuntu/linux-aws-5.11<5.16~
5.16~
ubuntu/linux-aws-5.13<5.13.0-1014.15~20.04.1
5.13.0-1014.15~20.04.1
ubuntu/linux-aws-5.13<5.16~
5.16~
ubuntu/linux-aws-5.15<5.16~
5.16~
ubuntu/linux-aws-5.3<5.16~
5.16~
ubuntu/linux-aws-5.4<5.4.0-1066.69~18.04.1
5.4.0-1066.69~18.04.1
ubuntu/linux-aws-5.4<5.16~
5.16~
ubuntu/linux-aws-5.8<5.16~
5.16~
ubuntu/linux-aws-hwe<5.16~
5.16~
ubuntu/linux-aws-hwe<4.15.0-1120.128~16.04.1
4.15.0-1120.128~16.04.1
ubuntu/linux-azure<5.13.0-1014.16
5.13.0-1014.16
ubuntu/linux-azure<4.15.0-1131.144~14.04.1
4.15.0-1131.144~14.04.1
ubuntu/linux-azure<5.16~
5.16~
ubuntu/linux-azure<5.4.0-1070.73
5.4.0-1070.73
ubuntu/linux-azure<4.15.0-1131.144~16.04.1
4.15.0-1131.144~16.04.1
ubuntu/linux-azure-4.15<5.16~
5.16~
ubuntu/linux-azure-4.15<4.15.0-1131.144
4.15.0-1131.144
ubuntu/linux-azure-5.11<5.16~
5.16~
ubuntu/linux-azure-5.13<5.13.0-1014.16~20.04.1
5.13.0-1014.16~20.04.1
ubuntu/linux-azure-5.13<5.16~
5.16~
ubuntu/linux-azure-5.15<5.16~
5.16~
ubuntu/linux-azure-5.3<5.16~
5.16~
ubuntu/linux-azure-5.4<5.16~
5.16~
ubuntu/linux-azure-5.4<5.4.0-1070.73~18.04.1
5.4.0-1070.73~18.04.1
ubuntu/linux-azure-edge<5.16~
5.16~
ubuntu/linux-azure-fde<5.16~
5.16~
ubuntu/linux-azure-fde<5.4.0-1070.73
5.4.0-1070.73
ubuntu/linux-azure-fde-5.15<5.16~
5.16~
ubuntu/linux-bluefield<5.4.0-1028.31
5.4.0-1028.31
ubuntu/linux-bluefield<5.16~
5.16~
ubuntu/linux-dell300x<5.16~
5.16~
ubuntu/linux-dell300x<4.15.0-1035.40
4.15.0-1035.40
ubuntu/linux-fips<5.16~
5.16~
ubuntu/linux-gcp<5.16~
5.16~
ubuntu/linux-gcp<4.15.0-1116.130~16.04.1
4.15.0-1116.130~16.04.1
ubuntu/linux-gcp<5.4.0-1065.69
5.4.0-1065.69
ubuntu/linux-gcp<5.13.0-1015.18
5.13.0-1015.18
ubuntu/linux-gcp-4.15<4.15.0-1116.130
4.15.0-1116.130
ubuntu/linux-gcp-4.15<5.16~
5.16~
ubuntu/linux-gcp-5.11<5.16~
5.16~
ubuntu/linux-gcp-5.13<5.13.0-1015.18~20.04.1
5.13.0-1015.18~20.04.1
ubuntu/linux-gcp-5.13<5.16~
5.16~
ubuntu/linux-gcp-5.15<5.16~
5.16~
ubuntu/linux-gcp-5.3<5.16~
5.16~
ubuntu/linux-gcp-5.4<5.4.0-1065.69~18.04.1
5.4.0-1065.69~18.04.1
ubuntu/linux-gcp-5.8<5.16~
5.16~
ubuntu/linux-gke<5.16~
5.16~
ubuntu/linux-gke<5.4.0-1063.66
5.4.0-1063.66
ubuntu/linux-gke-4.15<5.16~
5.16~
ubuntu/linux-gke-5.0<5.16~
5.16~
ubuntu/linux-gke-5.15<5.16~
5.16~
ubuntu/linux-gke-5.3<5.16~
5.16~
ubuntu/linux-gke-5.4<5.4.0-1063.66~18.04.1
5.4.0-1063.66~18.04.1
ubuntu/linux-gke-5.4<5.16~
5.16~
ubuntu/linux-gkeop<5.16~
5.16~
ubuntu/linux-gkeop<5.4.0-1034.35
5.4.0-1034.35
ubuntu/linux-gkeop-5.4<5.16~
5.16~
ubuntu/linux-gkeop-5.4<5.4.0-1034.35~18.04.1
5.4.0-1034.35~18.04.1
ubuntu/linux-hwe<5.16~
5.16~
ubuntu/linux-hwe<4.15.0-169.177~16.04.1
4.15.0-169.177~16.04.1
ubuntu/linux-hwe-5.11<5.16~
5.16~
ubuntu/linux-hwe-5.13<5.13.0-30.33~20.04.1
5.13.0-30.33~20.04.1
ubuntu/linux-hwe-5.13<5.16~
5.16~
ubuntu/linux-hwe-5.15<5.16~
5.16~
ubuntu/linux-hwe-5.4<5.16~
5.16~
ubuntu/linux-hwe-5.4<5.4.0-100.113~18.04.1
5.4.0-100.113~18.04.1
ubuntu/linux-hwe-5.8<5.16~
5.16~
ubuntu/linux-hwe-edge<5.16~
5.16~
ubuntu/linux-ibm<5.16~
5.16~
ubuntu/linux-ibm<5.4.0-1015.16
5.4.0-1015.16
ubuntu/linux-ibm-5.4<5.16~
5.16~
ubuntu/linux-ibm-5.4<5.4.0-1015.16~18.04.1
5.4.0-1015.16~18.04.1
ubuntu/linux-intel-5.13<5.13.0-1010.10
5.13.0-1010.10
ubuntu/linux-intel-5.13<5.16~
5.16~
ubuntu/linux-intel-iotg<5.16~
5.16~
ubuntu/linux-intel-iotg-5.15<5.16~
5.16~
ubuntu/linux-kvm<4.15.0-1107.109
4.15.0-1107.109
ubuntu/linux-kvm<5.4.0-1056.58
5.4.0-1056.58
ubuntu/linux-kvm<5.13.0-1013.14
5.13.0-1013.14
ubuntu/linux-kvm<5.16~
5.16~
ubuntu/linux-kvm<4.4.0-1104.113
4.4.0-1104.113
ubuntu/linux-lowlatency<5.16~
5.16~
ubuntu/linux-lowlatency-hwe-5.15<5.16~
5.16~
ubuntu/linux-lowlatency-hwe-5.19<5.16~
5.16~
ubuntu/linux-lts-xenial<4.4.0-223.256~14.04.1
4.4.0-223.256~14.04.1
ubuntu/linux-lts-xenial<5.16~
5.16~
ubuntu/linux-oem<5.16~
5.16~
ubuntu/linux-oem-5.10<5.16~
5.16~
ubuntu/linux-oem-5.13<5.16~
5.16~
ubuntu/linux-oem-5.14<5.14.0-1022.24
5.14.0-1022.24
ubuntu/linux-oem-5.17<5.16~
5.16~
ubuntu/linux-oem-5.6<5.16~
5.16~
ubuntu/linux-oem-6.0<5.16~
5.16~
ubuntu/linux-oem-6.1<5.16~
5.16~
ubuntu/linux-oem-osp1<5.16~
5.16~
ubuntu/linux-oracle<4.15.0-1087.95
4.15.0-1087.95
ubuntu/linux-oracle<5.4.0-1064.68
5.4.0-1064.68
ubuntu/linux-oracle<5.13.0-1018.22
5.13.0-1018.22
ubuntu/linux-oracle<5.16~
5.16~
ubuntu/linux-oracle<4.15.0-1087.95~16.04.1
4.15.0-1087.95~16.04.1
ubuntu/linux-oracle-5.0<5.16~
5.16~
ubuntu/linux-oracle-5.11<5.16~
5.16~
ubuntu/linux-oracle-5.13<5.13.0-1018.22~20.04.1
5.13.0-1018.22~20.04.1
ubuntu/linux-oracle-5.13<5.16~
5.16~
ubuntu/linux-oracle-5.15<5.16~
5.16~
ubuntu/linux-oracle-5.3<5.16~
5.16~
ubuntu/linux-oracle-5.4<5.4.0-1064.68~18.04.1
5.4.0-1064.68~18.04.1
ubuntu/linux-raspi<5.4.0-1053.60
5.4.0-1053.60
ubuntu/linux-raspi<5.13.0-1017.19
5.13.0-1017.19
ubuntu/linux-raspi<5.16~
5.16~
ubuntu/linux-raspi-5.4<5.16~
5.16~
ubuntu/linux-raspi-5.4<5.4.0-1053.60~18.04.1
5.4.0-1053.60~18.04.1
ubuntu/linux-raspi2<5.16~
5.16~
ubuntu/linux-raspi2<4.15.0-1103.110
4.15.0-1103.110
ubuntu/linux-raspi2-5.3<5.16~
5.16~
ubuntu/linux-riscv<5.13.0-1012.14
5.13.0-1012.14
ubuntu/linux-riscv<5.16~
5.16~
ubuntu/linux-riscv-5.11<5.16~
5.16~
ubuntu/linux-riscv-5.8<5.16~
5.16~
ubuntu/linux-snapdragon<4.15.0-1120.129
4.15.0-1120.129
ubuntu/linux-snapdragon<5.16~
5.16~
ubuntu/linux-nvidia<5.16~
5.16~
ubuntu/linux-aws-5.0<5.16~
5.16~
ubuntu/linux-aws<4.15.0-1121.129
4.15.0-1121.129
ubuntu/linux-aws<5.4.0-1066.69
5.4.0-1066.69
ubuntu/linux-aws<5.13.0-1014.15
5.13.0-1014.15
ubuntu/linux-aws<4.4.0-1103.108
4.4.0-1103.108
ubuntu/linux-aws<5.16~
5.16~
ubuntu/linux-aws<4.4.0-1139.153
4.4.0-1139.153
ubuntu/linux-gkeop-5.15<5.16~
5.16~
ubuntu/linux<4.15.0-169.177
4.15.0-169.177
ubuntu/linux<5.4.0-100.113
5.4.0-100.113
ubuntu/linux<5.13.0-30.33
5.13.0-30.33
ubuntu/linux<5.16~
5.16~
ubuntu/linux<4.4.0-223.256
4.4.0-223.256
ubuntu/linux-aws-5.19<5.16~
5.16~
ubuntu/linux-riscv-5.19<5.16~
5.16~
ubuntu/linux-allwinner<5.16~
5.16~
ubuntu/linux-allwinner-5.19<5.16~
5.16~
ubuntu/linux-starfive<5.16~
5.16~
ubuntu/linux-starfive-5.19<5.16~
5.16~
ubuntu/linux-hwe-6.2<5.16~
5.16~
ubuntu/linux-lowlatency-hwe-6.2<5.16~
5.16~
ubuntu/linux-azure-fde-5.19<5.16~
5.16~
ubuntu/linux-iot<5.16~
5.16~
ubuntu/linux-xilinx-zynqmp<5.16~
5.16~
All of
Netapp H410c Firmware
Netapp H410c
All of
Apple macOS Ventura
Apple macOS Big Sur
All of
Apple macOS Big Sur
Apple macOS Ventura
All of
Apple macOS Big Sur
Apple macOS Monterey
All of
Netapp H300e Firmware
Netapp H300e
All of
Netapp H500e Firmware
Netapp H500e
All of
Netapp H700e Firmware
Netapp H700e
All of
Apple macOS Monterey
Apple macOS Monterey
redhat/kernel<5.16
5.16
debian/linux
4.19.249-2
4.19.304-1
5.10.197-1
5.10.205-2
6.1.66-1
6.1.69-1
6.6.13-1
6.6.15-2

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Reference Links

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