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CVE-2020-35508

Fixed in a distro release EPSS <1%

A flaw possibility of race condition and incorrect initialization of the process id was found in the Linux kernel child/parent process identification handling while filtering signal handlers. A local attacker is able to abuse this flaw to bypass checks to send any signal to a privileged process.

Published 2021-03-26 · CVE record · OSV

Products: linux_kernel, redhat enterprise_linux, netapp a700s_firmware, netapp brocade_fabric_operating_system_firmware, netapp fas8300_firmware, netapp fas8700_firmware, netapp aff_a400_firmware, netapp h300s_firmware, netapp h500s_firmware, netapp h700s_firmware, netapp h300e_firmware, netapp h500e_firmware, netapp h700e_firmware, netapp h410s_firmware, netapp h410c_firmware, netapp h610c_firmware, netapp h610s_firmware, netapp h615c_firmware

Distro releases

ReleasePackageFixed in
AlmaLinux 8kernel-tools-libs-devel4.18.0-305.el8
Debian 12linux5.9.9-1
Debian 13linux5.9.9-1
Debian 14linux5.9.9-1
Red Hat Enterprise Linux 8bpftool0:4.18.0-305.el8
Red Hat Enterprise Linux 8bpftool-debuginfo0:4.18.0-305.el8
Red Hat Enterprise Linux 8kernel0:4.18.0-305.el8
Red Hat Enterprise Linux 8kernel-abi-stablelists0:4.18.0-305.el8
Red Hat Enterprise Linux 8kernel-core0:4.18.0-305.el8
Red Hat Enterprise Linux 8kernel-debug0:4.18.0-305.el8
Red Hat Enterprise Linux 8kernel-debug-core0:4.18.0-305.el8
Red Hat Enterprise Linux 8kernel-debug-debuginfo0:4.18.0-305.el8
Red Hat Enterprise Linux 8kernel-debug-devel0:4.18.0-305.el8
Red Hat Enterprise Linux 8kernel-debug-modules0:4.18.0-305.el8
Red Hat Enterprise Linux 8kernel-debug-modules-extra0:4.18.0-305.el8
Red Hat Enterprise Linux 8kernel-debuginfo0:4.18.0-305.el8
Red Hat Enterprise Linux 8kernel-debuginfo-common-aarch640:4.18.0-305.el8
Red Hat Enterprise Linux 8kernel-debuginfo-common-ppc64le0:4.18.0-305.el8
Red Hat Enterprise Linux 8kernel-debuginfo-common-s390x0:4.18.0-305.el8
Red Hat Enterprise Linux 8kernel-debuginfo-common-x86_640:4.18.0-305.el8
Red Hat Enterprise Linux 8kernel-devel0:4.18.0-305.el8
Red Hat Enterprise Linux 8kernel-doc0:4.18.0-305.el8
Red Hat Enterprise Linux 8kernel-modules0:4.18.0-305.el8
Red Hat Enterprise Linux 8kernel-modules-extra0:4.18.0-305.el8
Red Hat Enterprise Linux 8kernel-rt0:4.18.0-305.rt7.72.el8
Red Hat Enterprise Linux 8kernel-rt-core0:4.18.0-305.rt7.72.el8
Red Hat Enterprise Linux 8kernel-rt-debug0:4.18.0-305.rt7.72.el8
Red Hat Enterprise Linux 8kernel-rt-debug-core0:4.18.0-305.rt7.72.el8
Red Hat Enterprise Linux 8kernel-rt-debug-debuginfo0:4.18.0-305.rt7.72.el8
Red Hat Enterprise Linux 8kernel-rt-debug-devel0:4.18.0-305.rt7.72.el8
Red Hat Enterprise Linux 8kernel-rt-debug-kvm0:4.18.0-305.rt7.72.el8
Red Hat Enterprise Linux 8kernel-rt-debug-modules0:4.18.0-305.rt7.72.el8
Red Hat Enterprise Linux 8kernel-rt-debug-modules-extra0:4.18.0-305.rt7.72.el8
Red Hat Enterprise Linux 8kernel-rt-debuginfo0:4.18.0-305.rt7.72.el8
Red Hat Enterprise Linux 8kernel-rt-debuginfo-common-x86_640:4.18.0-305.rt7.72.el8
Red Hat Enterprise Linux 8kernel-rt-devel0:4.18.0-305.rt7.72.el8
Red Hat Enterprise Linux 8kernel-rt-kvm0:4.18.0-305.rt7.72.el8
Red Hat Enterprise Linux 8kernel-rt-modules0:4.18.0-305.rt7.72.el8
Red Hat Enterprise Linux 8kernel-rt-modules-extra0:4.18.0-305.rt7.72.el8
Red Hat Enterprise Linux 8kernel-tools0:4.18.0-305.el8
Red Hat Enterprise Linux 8kernel-tools-debuginfo0:4.18.0-305.el8
Red Hat Enterprise Linux 8kernel-tools-libs0:4.18.0-305.el8
Red Hat Enterprise Linux 8kernel-tools-libs-devel0:4.18.0-305.el8
Red Hat Enterprise Linux 8kernel-zfcpdump0:4.18.0-305.el8
Red Hat Enterprise Linux 8kernel-zfcpdump-core0:4.18.0-305.el8
Red Hat Enterprise Linux 8kernel-zfcpdump-debuginfo0:4.18.0-305.el8
Red Hat Enterprise Linux 8kernel-zfcpdump-devel0:4.18.0-305.el8
Red Hat Enterprise Linux 8kernel-zfcpdump-modules0:4.18.0-305.el8
Red Hat Enterprise Linux 8kernel-zfcpdump-modules-extra0:4.18.0-305.el8
Red Hat Enterprise Linux 8perf0:4.18.0-305.el8
Red Hat Enterprise Linux 8perf-debuginfo0:4.18.0-305.el8
Red Hat Enterprise Linux 8python3-perf0:4.18.0-305.el8
Red Hat Enterprise Linux 8python3-perf-debuginfo0:4.18.0-305.el8
Red Hat rhel eus 8.2bpftool0:4.18.0-193.60.2.el8_2
Red Hat rhel eus 8.2bpftool-debuginfo0:4.18.0-193.60.2.el8_2
Red Hat rhel eus 8.2kernel0:4.18.0-193.60.2.el8_2
Red Hat rhel eus 8.2kernel-abi-whitelists0:4.18.0-193.60.2.el8_2
Red Hat rhel eus 8.2kernel-core0:4.18.0-193.60.2.el8_2
Red Hat rhel eus 8.2kernel-debug0:4.18.0-193.60.2.el8_2
Red Hat rhel eus 8.2kernel-debug-core0:4.18.0-193.60.2.el8_2
Red Hat rhel eus 8.2kernel-debug-debuginfo0:4.18.0-193.60.2.el8_2
Red Hat rhel eus 8.2kernel-debug-devel0:4.18.0-193.60.2.el8_2
Red Hat rhel eus 8.2kernel-debug-modules0:4.18.0-193.60.2.el8_2
Red Hat rhel eus 8.2kernel-debug-modules-extra0:4.18.0-193.60.2.el8_2
Red Hat rhel eus 8.2kernel-debuginfo0:4.18.0-193.60.2.el8_2
Red Hat rhel eus 8.2kernel-debuginfo-common-aarch640:4.18.0-193.60.2.el8_2
Red Hat rhel eus 8.2kernel-debuginfo-common-ppc64le0:4.18.0-193.60.2.el8_2
Red Hat rhel eus 8.2kernel-debuginfo-common-s390x0:4.18.0-193.60.2.el8_2
Red Hat rhel eus 8.2kernel-debuginfo-common-x86_640:4.18.0-193.60.2.el8_2
Red Hat rhel eus 8.2kernel-devel0:4.18.0-193.60.2.el8_2
Red Hat rhel eus 8.2kernel-doc0:4.18.0-193.60.2.el8_2
Red Hat rhel eus 8.2kernel-modules0:4.18.0-193.60.2.el8_2
Red Hat rhel eus 8.2kernel-modules-extra0:4.18.0-193.60.2.el8_2
Red Hat rhel eus 8.2kernel-rt0:4.18.0-193.60.2.rt13.112.el8_2
Red Hat rhel eus 8.2kernel-rt-core0:4.18.0-193.60.2.rt13.112.el8_2
Red Hat rhel eus 8.2kernel-rt-debug0:4.18.0-193.60.2.rt13.112.el8_2
Red Hat rhel eus 8.2kernel-rt-debug-core0:4.18.0-193.60.2.rt13.112.el8_2
Red Hat rhel eus 8.2kernel-rt-debug-debuginfo0:4.18.0-193.60.2.rt13.112.el8_2
Red Hat rhel eus 8.2kernel-rt-debug-devel0:4.18.0-193.60.2.rt13.112.el8_2
Red Hat rhel eus 8.2kernel-rt-debug-kvm0:4.18.0-193.60.2.rt13.112.el8_2
Red Hat rhel eus 8.2kernel-rt-debug-modules0:4.18.0-193.60.2.rt13.112.el8_2
Red Hat rhel eus 8.2kernel-rt-debug-modules-extra0:4.18.0-193.60.2.rt13.112.el8_2
Red Hat rhel eus 8.2kernel-rt-debuginfo0:4.18.0-193.60.2.rt13.112.el8_2
Red Hat rhel eus 8.2kernel-rt-debuginfo-common-x86_640:4.18.0-193.60.2.rt13.112.el8_2
Red Hat rhel eus 8.2kernel-rt-devel0:4.18.0-193.60.2.rt13.112.el8_2
Red Hat rhel eus 8.2kernel-rt-kvm0:4.18.0-193.60.2.rt13.112.el8_2
Red Hat rhel eus 8.2kernel-rt-modules0:4.18.0-193.60.2.rt13.112.el8_2
Red Hat rhel eus 8.2kernel-rt-modules-extra0:4.18.0-193.60.2.rt13.112.el8_2
Red Hat rhel eus 8.2kernel-tools0:4.18.0-193.60.2.el8_2
Red Hat rhel eus 8.2kernel-tools-debuginfo0:4.18.0-193.60.2.el8_2
Red Hat rhel eus 8.2kernel-tools-libs0:4.18.0-193.60.2.el8_2
Red Hat rhel eus 8.2kernel-tools-libs-devel0:4.18.0-193.60.2.el8_2
Red Hat rhel eus 8.2kernel-zfcpdump0:4.18.0-193.60.2.el8_2
Red Hat rhel eus 8.2kernel-zfcpdump-core0:4.18.0-193.60.2.el8_2
Red Hat rhel eus 8.2kernel-zfcpdump-debuginfo0:4.18.0-193.60.2.el8_2
Red Hat rhel eus 8.2kernel-zfcpdump-devel0:4.18.0-193.60.2.el8_2
Red Hat rhel eus 8.2kernel-zfcpdump-modules0:4.18.0-193.60.2.el8_2
Red Hat rhel eus 8.2kernel-zfcpdump-modules-extra0:4.18.0-193.60.2.el8_2
Red Hat rhel eus 8.2perf0:4.18.0-193.60.2.el8_2
Red Hat rhel eus 8.2perf-debuginfo0:4.18.0-193.60.2.el8_2
Red Hat rhel eus 8.2python3-perf0:4.18.0-193.60.2.el8_2
Red Hat rhel eus 8.2python3-perf-debuginfo0:4.18.0-193.60.2.el8_2
Ubuntu 16.04 LTSlinux4.4.0-198.230
Ubuntu 16.04 LTSlinux-aws4.4.0-1119.133
Ubuntu 16.04 LTSlinux-aws-hwe4.15.0-1091.96~16.04.1
Ubuntu 16.04 LTSlinux-azure4.15.0-1103.114~16.04.1
Ubuntu 16.04 LTSlinux-gcp4.15.0-1091.104~16.04.1
Ubuntu 16.04 LTSlinux-hwe4.15.0-129.132~16.04.1
Ubuntu 16.04 LTSlinux-hwe-edgeno fix
Ubuntu 16.04 LTSlinux-kvm4.4.0-1085.94
Ubuntu 16.04 LTSlinux-oracle4.15.0-1062.68~16.04.1
Ubuntu 16.04 LTSlinux-raspi24.4.0-1143.153
Ubuntu 16.04 LTSlinux-snapdragon4.4.0-1147.157
Ubuntu 18.04 LTSlinux4.15.0-129.132
Ubuntu 18.04 LTSlinux-aws4.15.0-1091.96
Ubuntu 18.04 LTSlinux-aws-5.0no fix
Ubuntu 18.04 LTSlinux-aws-5.3no fix
Ubuntu 18.04 LTSlinux-aws-5.45.4.0-1034.35~18.04.1
Ubuntu 18.04 LTSlinux-azureno fix
Ubuntu 18.04 LTSlinux-azure-4.154.15.0-1103.114
Ubuntu 18.04 LTSlinux-azure-5.3no fix
Ubuntu 18.04 LTSlinux-azure-5.45.4.0-1035.36~18.04.1
Ubuntu 18.04 LTSlinux-azure-edgeno fix
Ubuntu 18.04 LTSlinux-dell300x4.15.0-1010.14
Ubuntu 18.04 LTSlinux-gcpno fix
Ubuntu 18.04 LTSlinux-gcp-4.154.15.0-1091.104
Ubuntu 18.04 LTSlinux-gcp-5.3no fix
Ubuntu 18.04 LTSlinux-gcp-5.45.4.0-1033.35~18.04.1
Ubuntu 18.04 LTSlinux-gcp-edgeno fix
Ubuntu 18.04 LTSlinux-gke-4.154.15.0-1077.82
Ubuntu 18.04 LTSlinux-gke-5.45.4.0-1033.35~18.04.1
Ubuntu 18.04 LTSlinux-gkeop-5.45.4.0-1008.9~18.04.1
Ubuntu 18.04 LTSlinux-hweno fix
Ubuntu 18.04 LTSlinux-hwe-5.45.4.0-59.65~18.04.1
Ubuntu 18.04 LTSlinux-hwe-edgeno fix
Ubuntu 18.04 LTSlinux-kvm4.15.0-1082.84
Ubuntu 18.04 LTSlinux-oemno fix
Ubuntu 18.04 LTSlinux-oracle4.15.0-1062.68
Ubuntu 18.04 LTSlinux-oracle-5.0no fix
Ubuntu 18.04 LTSlinux-oracle-5.3no fix
Ubuntu 18.04 LTSlinux-oracle-5.45.4.0-1034.36~18.04.1
Ubuntu 18.04 LTSlinux-raspi-5.45.4.0-1026.29~18.04.1
Ubuntu 18.04 LTSlinux-raspi24.15.0-1077.82
Ubuntu 18.04 LTSlinux-snapdragon4.15.0-1094.103
Ubuntu 20.04 LTSlinux5.4.0-59.65
Ubuntu 20.04 LTSlinux-aws5.4.0-1034.35
Ubuntu 20.04 LTSlinux-azure5.4.0-1035.36
Ubuntu 20.04 LTSlinux-gcp5.4.0-1033.35
Ubuntu 20.04 LTSlinux-hwe-5.85.8.0-44.50~20.04.1
Ubuntu 20.04 LTSlinux-kvm5.4.0-1031.32
Ubuntu 20.04 LTSlinux-oem-5.65.6.0-1048.52
Ubuntu 20.04 LTSlinux-oracle5.4.0-1034.36
Ubuntu 20.04 LTSlinux-raspi5.4.0-1026.29
Ubuntu 20.04 LTSlinux-raspi2no fix
Ubuntu 20.04 LTSlinux-riscvno fix
Ubuntu 20.04 LTSlinux-riscv-5.85.8.0-17.19~20.04.1
Ubuntu 22.04 LTSlinux-intel-iot-realtimeno fix
Ubuntu 22.04 LTSlinux-realtimeno fix
Ubuntu 24.04 LTSlinux-raspi-realtimeno fix
Ubuntu Pro 14.04 LTSlinuxno fix
Ubuntu Pro 14.04 LTSlinux-aws4.4.0-1083.87
Ubuntu Pro 14.04 LTSlinux-azure4.15.0-1103.114~14.04.1
Ubuntu Pro 14.04 LTSlinux-lts-xenial4.4.0-198.230~14.04.1
Ubuntu Pro FIPS-updates 16.04 LTSlinux-fips4.4.0-1052.58
Ubuntu Pro FIPS-updates 18.04 LTSlinux-aws-fips4.15.0-2034.35
Ubuntu Pro FIPS-updates 18.04 LTSlinux-azure-fips4.15.0-2016.18
Ubuntu Pro FIPS-updates 18.04 LTSlinux-fips4.15.0-1049.56
Ubuntu Pro FIPS-updates 20.04 LTSlinux-aws-fips5.4.0-1069.73+fips2
Ubuntu Pro FIPS-updates 20.04 LTSlinux-azure-fips5.4.0-1073.76+fips1
Ubuntu Pro FIPS-updates 20.04 LTSlinux-gcp-fips5.4.0-1067.71~20.04.1
Ubuntu Pro FIPS 16.04 LTSlinux-fipsno fix
Ubuntu Pro FIPS 18.04 LTSlinux-aws-fipsno fix
Ubuntu Pro FIPS 18.04 LTSlinux-azure-fipsno fix
Ubuntu Pro FIPS 18.04 LTSlinux-fipsno fix
Ubuntu Pro FIPS 18.04 LTSlinux-gcp-fipsno fix
Ubuntu Pro FIPS 20.04 LTSlinux-aws-fipsno fix
Ubuntu Pro FIPS 20.04 LTSlinux-azure-fipsno fix
Ubuntu Pro FIPS 20.04 LTSlinux-gcp-fipsno fix