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.
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
| Release | Package | Fixed in |
|---|---|---|
| AlmaLinux 8 | kernel-tools-libs-devel | 4.18.0-305.el8 |
| Debian 12 | linux | 5.9.9-1 |
| Debian 13 | linux | 5.9.9-1 |
| Debian 14 | linux | 5.9.9-1 |
| Red Hat Enterprise Linux 8 | bpftool | 0:4.18.0-305.el8 |
| Red Hat Enterprise Linux 8 | bpftool-debuginfo | 0:4.18.0-305.el8 |
| Red Hat Enterprise Linux 8 | kernel | 0:4.18.0-305.el8 |
| Red Hat Enterprise Linux 8 | kernel-abi-stablelists | 0:4.18.0-305.el8 |
| Red Hat Enterprise Linux 8 | kernel-core | 0:4.18.0-305.el8 |
| Red Hat Enterprise Linux 8 | kernel-debug | 0:4.18.0-305.el8 |
| Red Hat Enterprise Linux 8 | kernel-debug-core | 0:4.18.0-305.el8 |
| Red Hat Enterprise Linux 8 | kernel-debug-debuginfo | 0:4.18.0-305.el8 |
| Red Hat Enterprise Linux 8 | kernel-debug-devel | 0:4.18.0-305.el8 |
| Red Hat Enterprise Linux 8 | kernel-debug-modules | 0:4.18.0-305.el8 |
| Red Hat Enterprise Linux 8 | kernel-debug-modules-extra | 0:4.18.0-305.el8 |
| Red Hat Enterprise Linux 8 | kernel-debuginfo | 0:4.18.0-305.el8 |
| Red Hat Enterprise Linux 8 | kernel-debuginfo-common-aarch64 | 0:4.18.0-305.el8 |
| Red Hat Enterprise Linux 8 | kernel-debuginfo-common-ppc64le | 0:4.18.0-305.el8 |
| Red Hat Enterprise Linux 8 | kernel-debuginfo-common-s390x | 0:4.18.0-305.el8 |
| Red Hat Enterprise Linux 8 | kernel-debuginfo-common-x86_64 | 0:4.18.0-305.el8 |
| Red Hat Enterprise Linux 8 | kernel-devel | 0:4.18.0-305.el8 |
| Red Hat Enterprise Linux 8 | kernel-doc | 0:4.18.0-305.el8 |
| Red Hat Enterprise Linux 8 | kernel-modules | 0:4.18.0-305.el8 |
| Red Hat Enterprise Linux 8 | kernel-modules-extra | 0:4.18.0-305.el8 |
| Red Hat Enterprise Linux 8 | kernel-rt | 0:4.18.0-305.rt7.72.el8 |
| Red Hat Enterprise Linux 8 | kernel-rt-core | 0:4.18.0-305.rt7.72.el8 |
| Red Hat Enterprise Linux 8 | kernel-rt-debug | 0:4.18.0-305.rt7.72.el8 |
| Red Hat Enterprise Linux 8 | kernel-rt-debug-core | 0:4.18.0-305.rt7.72.el8 |
| Red Hat Enterprise Linux 8 | kernel-rt-debug-debuginfo | 0:4.18.0-305.rt7.72.el8 |
| Red Hat Enterprise Linux 8 | kernel-rt-debug-devel | 0:4.18.0-305.rt7.72.el8 |
| Red Hat Enterprise Linux 8 | kernel-rt-debug-kvm | 0:4.18.0-305.rt7.72.el8 |
| Red Hat Enterprise Linux 8 | kernel-rt-debug-modules | 0:4.18.0-305.rt7.72.el8 |
| Red Hat Enterprise Linux 8 | kernel-rt-debug-modules-extra | 0:4.18.0-305.rt7.72.el8 |
| Red Hat Enterprise Linux 8 | kernel-rt-debuginfo | 0:4.18.0-305.rt7.72.el8 |
| Red Hat Enterprise Linux 8 | kernel-rt-debuginfo-common-x86_64 | 0:4.18.0-305.rt7.72.el8 |
| Red Hat Enterprise Linux 8 | kernel-rt-devel | 0:4.18.0-305.rt7.72.el8 |
| Red Hat Enterprise Linux 8 | kernel-rt-kvm | 0:4.18.0-305.rt7.72.el8 |
| Red Hat Enterprise Linux 8 | kernel-rt-modules | 0:4.18.0-305.rt7.72.el8 |
| Red Hat Enterprise Linux 8 | kernel-rt-modules-extra | 0:4.18.0-305.rt7.72.el8 |
| Red Hat Enterprise Linux 8 | kernel-tools | 0:4.18.0-305.el8 |
| Red Hat Enterprise Linux 8 | kernel-tools-debuginfo | 0:4.18.0-305.el8 |
| Red Hat Enterprise Linux 8 | kernel-tools-libs | 0:4.18.0-305.el8 |
| Red Hat Enterprise Linux 8 | kernel-tools-libs-devel | 0:4.18.0-305.el8 |
| Red Hat Enterprise Linux 8 | kernel-zfcpdump | 0:4.18.0-305.el8 |
| Red Hat Enterprise Linux 8 | kernel-zfcpdump-core | 0:4.18.0-305.el8 |
| Red Hat Enterprise Linux 8 | kernel-zfcpdump-debuginfo | 0:4.18.0-305.el8 |
| Red Hat Enterprise Linux 8 | kernel-zfcpdump-devel | 0:4.18.0-305.el8 |
| Red Hat Enterprise Linux 8 | kernel-zfcpdump-modules | 0:4.18.0-305.el8 |
| Red Hat Enterprise Linux 8 | kernel-zfcpdump-modules-extra | 0:4.18.0-305.el8 |
| Red Hat Enterprise Linux 8 | perf | 0:4.18.0-305.el8 |
| Red Hat Enterprise Linux 8 | perf-debuginfo | 0:4.18.0-305.el8 |
| Red Hat Enterprise Linux 8 | python3-perf | 0:4.18.0-305.el8 |
| Red Hat Enterprise Linux 8 | python3-perf-debuginfo | 0:4.18.0-305.el8 |
| Red Hat rhel eus 8.2 | bpftool | 0:4.18.0-193.60.2.el8_2 |
| Red Hat rhel eus 8.2 | bpftool-debuginfo | 0:4.18.0-193.60.2.el8_2 |
| Red Hat rhel eus 8.2 | kernel | 0:4.18.0-193.60.2.el8_2 |
| Red Hat rhel eus 8.2 | kernel-abi-whitelists | 0:4.18.0-193.60.2.el8_2 |
| Red Hat rhel eus 8.2 | kernel-core | 0:4.18.0-193.60.2.el8_2 |
| Red Hat rhel eus 8.2 | kernel-debug | 0:4.18.0-193.60.2.el8_2 |
| Red Hat rhel eus 8.2 | kernel-debug-core | 0:4.18.0-193.60.2.el8_2 |
| Red Hat rhel eus 8.2 | kernel-debug-debuginfo | 0:4.18.0-193.60.2.el8_2 |
| Red Hat rhel eus 8.2 | kernel-debug-devel | 0:4.18.0-193.60.2.el8_2 |
| Red Hat rhel eus 8.2 | kernel-debug-modules | 0:4.18.0-193.60.2.el8_2 |
| Red Hat rhel eus 8.2 | kernel-debug-modules-extra | 0:4.18.0-193.60.2.el8_2 |
| Red Hat rhel eus 8.2 | kernel-debuginfo | 0:4.18.0-193.60.2.el8_2 |
| Red Hat rhel eus 8.2 | kernel-debuginfo-common-aarch64 | 0:4.18.0-193.60.2.el8_2 |
| Red Hat rhel eus 8.2 | kernel-debuginfo-common-ppc64le | 0:4.18.0-193.60.2.el8_2 |
| Red Hat rhel eus 8.2 | kernel-debuginfo-common-s390x | 0:4.18.0-193.60.2.el8_2 |
| Red Hat rhel eus 8.2 | kernel-debuginfo-common-x86_64 | 0:4.18.0-193.60.2.el8_2 |
| Red Hat rhel eus 8.2 | kernel-devel | 0:4.18.0-193.60.2.el8_2 |
| Red Hat rhel eus 8.2 | kernel-doc | 0:4.18.0-193.60.2.el8_2 |
| Red Hat rhel eus 8.2 | kernel-modules | 0:4.18.0-193.60.2.el8_2 |
| Red Hat rhel eus 8.2 | kernel-modules-extra | 0:4.18.0-193.60.2.el8_2 |
| Red Hat rhel eus 8.2 | kernel-rt | 0:4.18.0-193.60.2.rt13.112.el8_2 |
| Red Hat rhel eus 8.2 | kernel-rt-core | 0:4.18.0-193.60.2.rt13.112.el8_2 |
| Red Hat rhel eus 8.2 | kernel-rt-debug | 0:4.18.0-193.60.2.rt13.112.el8_2 |
| Red Hat rhel eus 8.2 | kernel-rt-debug-core | 0:4.18.0-193.60.2.rt13.112.el8_2 |
| Red Hat rhel eus 8.2 | kernel-rt-debug-debuginfo | 0:4.18.0-193.60.2.rt13.112.el8_2 |
| Red Hat rhel eus 8.2 | kernel-rt-debug-devel | 0:4.18.0-193.60.2.rt13.112.el8_2 |
| Red Hat rhel eus 8.2 | kernel-rt-debug-kvm | 0:4.18.0-193.60.2.rt13.112.el8_2 |
| Red Hat rhel eus 8.2 | kernel-rt-debug-modules | 0:4.18.0-193.60.2.rt13.112.el8_2 |
| Red Hat rhel eus 8.2 | kernel-rt-debug-modules-extra | 0:4.18.0-193.60.2.rt13.112.el8_2 |
| Red Hat rhel eus 8.2 | kernel-rt-debuginfo | 0:4.18.0-193.60.2.rt13.112.el8_2 |
| Red Hat rhel eus 8.2 | kernel-rt-debuginfo-common-x86_64 | 0:4.18.0-193.60.2.rt13.112.el8_2 |
| Red Hat rhel eus 8.2 | kernel-rt-devel | 0:4.18.0-193.60.2.rt13.112.el8_2 |
| Red Hat rhel eus 8.2 | kernel-rt-kvm | 0:4.18.0-193.60.2.rt13.112.el8_2 |
| Red Hat rhel eus 8.2 | kernel-rt-modules | 0:4.18.0-193.60.2.rt13.112.el8_2 |
| Red Hat rhel eus 8.2 | kernel-rt-modules-extra | 0:4.18.0-193.60.2.rt13.112.el8_2 |
| Red Hat rhel eus 8.2 | kernel-tools | 0:4.18.0-193.60.2.el8_2 |
| Red Hat rhel eus 8.2 | kernel-tools-debuginfo | 0:4.18.0-193.60.2.el8_2 |
| Red Hat rhel eus 8.2 | kernel-tools-libs | 0:4.18.0-193.60.2.el8_2 |
| Red Hat rhel eus 8.2 | kernel-tools-libs-devel | 0:4.18.0-193.60.2.el8_2 |
| Red Hat rhel eus 8.2 | kernel-zfcpdump | 0:4.18.0-193.60.2.el8_2 |
| Red Hat rhel eus 8.2 | kernel-zfcpdump-core | 0:4.18.0-193.60.2.el8_2 |
| Red Hat rhel eus 8.2 | kernel-zfcpdump-debuginfo | 0:4.18.0-193.60.2.el8_2 |
| Red Hat rhel eus 8.2 | kernel-zfcpdump-devel | 0:4.18.0-193.60.2.el8_2 |
| Red Hat rhel eus 8.2 | kernel-zfcpdump-modules | 0:4.18.0-193.60.2.el8_2 |
| Red Hat rhel eus 8.2 | kernel-zfcpdump-modules-extra | 0:4.18.0-193.60.2.el8_2 |
| Red Hat rhel eus 8.2 | perf | 0:4.18.0-193.60.2.el8_2 |
| Red Hat rhel eus 8.2 | perf-debuginfo | 0:4.18.0-193.60.2.el8_2 |
| Red Hat rhel eus 8.2 | python3-perf | 0:4.18.0-193.60.2.el8_2 |
| Red Hat rhel eus 8.2 | python3-perf-debuginfo | 0:4.18.0-193.60.2.el8_2 |
| Ubuntu 16.04 LTS | linux | 4.4.0-198.230 |
| Ubuntu 16.04 LTS | linux-aws | 4.4.0-1119.133 |
| Ubuntu 16.04 LTS | linux-aws-hwe | 4.15.0-1091.96~16.04.1 |
| Ubuntu 16.04 LTS | linux-azure | 4.15.0-1103.114~16.04.1 |
| Ubuntu 16.04 LTS | linux-gcp | 4.15.0-1091.104~16.04.1 |
| Ubuntu 16.04 LTS | linux-hwe | 4.15.0-129.132~16.04.1 |
| Ubuntu 16.04 LTS | linux-hwe-edge | no fix |
| Ubuntu 16.04 LTS | linux-kvm | 4.4.0-1085.94 |
| Ubuntu 16.04 LTS | linux-oracle | 4.15.0-1062.68~16.04.1 |
| Ubuntu 16.04 LTS | linux-raspi2 | 4.4.0-1143.153 |
| Ubuntu 16.04 LTS | linux-snapdragon | 4.4.0-1147.157 |
| Ubuntu 18.04 LTS | linux | 4.15.0-129.132 |
| Ubuntu 18.04 LTS | linux-aws | 4.15.0-1091.96 |
| Ubuntu 18.04 LTS | linux-aws-5.0 | no fix |
| Ubuntu 18.04 LTS | linux-aws-5.3 | no fix |
| Ubuntu 18.04 LTS | linux-aws-5.4 | 5.4.0-1034.35~18.04.1 |
| Ubuntu 18.04 LTS | linux-azure | no fix |
| Ubuntu 18.04 LTS | linux-azure-4.15 | 4.15.0-1103.114 |
| Ubuntu 18.04 LTS | linux-azure-5.3 | no fix |
| Ubuntu 18.04 LTS | linux-azure-5.4 | 5.4.0-1035.36~18.04.1 |
| Ubuntu 18.04 LTS | linux-azure-edge | no fix |
| Ubuntu 18.04 LTS | linux-dell300x | 4.15.0-1010.14 |
| Ubuntu 18.04 LTS | linux-gcp | no fix |
| Ubuntu 18.04 LTS | linux-gcp-4.15 | 4.15.0-1091.104 |
| Ubuntu 18.04 LTS | linux-gcp-5.3 | no fix |
| Ubuntu 18.04 LTS | linux-gcp-5.4 | 5.4.0-1033.35~18.04.1 |
| Ubuntu 18.04 LTS | linux-gcp-edge | no fix |
| Ubuntu 18.04 LTS | linux-gke-4.15 | 4.15.0-1077.82 |
| Ubuntu 18.04 LTS | linux-gke-5.4 | 5.4.0-1033.35~18.04.1 |
| Ubuntu 18.04 LTS | linux-gkeop-5.4 | 5.4.0-1008.9~18.04.1 |
| Ubuntu 18.04 LTS | linux-hwe | no fix |
| Ubuntu 18.04 LTS | linux-hwe-5.4 | 5.4.0-59.65~18.04.1 |
| Ubuntu 18.04 LTS | linux-hwe-edge | no fix |
| Ubuntu 18.04 LTS | linux-kvm | 4.15.0-1082.84 |
| Ubuntu 18.04 LTS | linux-oem | no fix |
| Ubuntu 18.04 LTS | linux-oracle | 4.15.0-1062.68 |
| Ubuntu 18.04 LTS | linux-oracle-5.0 | no fix |
| Ubuntu 18.04 LTS | linux-oracle-5.3 | no fix |
| Ubuntu 18.04 LTS | linux-oracle-5.4 | 5.4.0-1034.36~18.04.1 |
| Ubuntu 18.04 LTS | linux-raspi-5.4 | 5.4.0-1026.29~18.04.1 |
| Ubuntu 18.04 LTS | linux-raspi2 | 4.15.0-1077.82 |
| Ubuntu 18.04 LTS | linux-snapdragon | 4.15.0-1094.103 |
| Ubuntu 20.04 LTS | linux | 5.4.0-59.65 |
| Ubuntu 20.04 LTS | linux-aws | 5.4.0-1034.35 |
| Ubuntu 20.04 LTS | linux-azure | 5.4.0-1035.36 |
| Ubuntu 20.04 LTS | linux-gcp | 5.4.0-1033.35 |
| Ubuntu 20.04 LTS | linux-hwe-5.8 | 5.8.0-44.50~20.04.1 |
| Ubuntu 20.04 LTS | linux-kvm | 5.4.0-1031.32 |
| Ubuntu 20.04 LTS | linux-oem-5.6 | 5.6.0-1048.52 |
| Ubuntu 20.04 LTS | linux-oracle | 5.4.0-1034.36 |
| Ubuntu 20.04 LTS | linux-raspi | 5.4.0-1026.29 |
| Ubuntu 20.04 LTS | linux-raspi2 | no fix |
| Ubuntu 20.04 LTS | linux-riscv | no fix |
| Ubuntu 20.04 LTS | linux-riscv-5.8 | 5.8.0-17.19~20.04.1 |
| Ubuntu 22.04 LTS | linux-intel-iot-realtime | no fix |
| Ubuntu 22.04 LTS | linux-realtime | no fix |
| Ubuntu 24.04 LTS | linux-raspi-realtime | no fix |
| Ubuntu Pro 14.04 LTS | linux | no fix |
| Ubuntu Pro 14.04 LTS | linux-aws | 4.4.0-1083.87 |
| Ubuntu Pro 14.04 LTS | linux-azure | 4.15.0-1103.114~14.04.1 |
| Ubuntu Pro 14.04 LTS | linux-lts-xenial | 4.4.0-198.230~14.04.1 |
| Ubuntu Pro FIPS-updates 16.04 LTS | linux-fips | 4.4.0-1052.58 |
| Ubuntu Pro FIPS-updates 18.04 LTS | linux-aws-fips | 4.15.0-2034.35 |
| Ubuntu Pro FIPS-updates 18.04 LTS | linux-azure-fips | 4.15.0-2016.18 |
| Ubuntu Pro FIPS-updates 18.04 LTS | linux-fips | 4.15.0-1049.56 |
| 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-gcp-fips | 5.4.0-1067.71~20.04.1 |
| Ubuntu Pro FIPS 16.04 LTS | linux-fips | no fix |
| Ubuntu Pro FIPS 18.04 LTS | linux-aws-fips | no fix |
| Ubuntu Pro FIPS 18.04 LTS | linux-azure-fips | no fix |
| Ubuntu Pro FIPS 18.04 LTS | linux-fips | no fix |
| Ubuntu Pro FIPS 18.04 LTS | linux-gcp-fips | no fix |
| Ubuntu Pro FIPS 20.04 LTS | linux-aws-fips | no fix |
| Ubuntu Pro FIPS 20.04 LTS | linux-azure-fips | no fix |
| Ubuntu Pro FIPS 20.04 LTS | linux-gcp-fips | no fix |