In the Linux kernel 5.4.0-rc2, there is a use-after-free (read) in the __blk_add_trace function in kernel/trace/blktrace.c (which is used to fill out a blk_io_trace structure and place it in a per-cpu sub-buffer).
The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory “belongs” to the code that operates on the new pointer.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Linux_kernel | Linux | 5.4.0 (including) | 5.4.0 (including) |
| Linux_kernel | Linux | 5.4.0-rc1 (including) | 5.4.0-rc1 (including) |
| Linux_kernel | Linux | 5.4.0-rc2 (including) | 5.4.0-rc2 (including) |
| Red Hat Enterprise Linux 7 | RedHat | kernel-rt-0:3.10.0-1127.8.2.rt56.1103.el7 | * |
| Red Hat Enterprise Linux 7 | RedHat | kernel-0:3.10.0-1127.8.2.el7 | * |
| Red Hat Enterprise Linux 7 | RedHat | kernel-alt-0:4.14.0-115.21.2.el7a | * |
| Red Hat Enterprise Linux 7.2 Advanced Update Support | RedHat | kernel-0:3.10.0-327.88.1.el7 | * |
| Red Hat Enterprise Linux 7.3 Advanced Update Support | RedHat | kernel-0:3.10.0-514.76.1.el7 | * |
| Red Hat Enterprise Linux 7.3 Telco Extended Update Support | RedHat | kernel-0:3.10.0-514.76.1.el7 | * |
| Red Hat Enterprise Linux 7.3 Update Services for SAP Solutions | RedHat | kernel-0:3.10.0-514.76.1.el7 | * |
| Red Hat Enterprise Linux 7.4 Advanced Update Support | RedHat | kernel-0:3.10.0-693.67.1.el7 | * |
| Red Hat Enterprise Linux 7.4 Telco Extended Update Support | RedHat | kernel-0:3.10.0-693.67.1.el7 | * |
| Red Hat Enterprise Linux 7.4 Update Services for SAP Solutions | RedHat | kernel-0:3.10.0-693.67.1.el7 | * |
| Red Hat Enterprise Linux 7.6 Extended Update Support | RedHat | kernel-0:3.10.0-957.54.1.el7 | * |
| Red Hat Enterprise Linux 7.6 Extended Update Support | RedHat | kpatch-patch | * |
| Red Hat Enterprise Linux 7.7 Extended Update Support | RedHat | kpatch-patch | * |
| Red Hat Enterprise Linux 7.7 Extended Update Support | RedHat | kernel-0:3.10.0-1062.26.1.el7 | * |
| Red Hat Enterprise Linux 8 | RedHat | kernel-rt-0:4.18.0-193.rt13.51.el8 | * |
| Red Hat Enterprise Linux 8 | RedHat | kernel-0:4.18.0-193.el8 | * |
| Red Hat Enterprise Linux 8.0 Update Services for SAP Solutions | RedHat | kernel-0:4.18.0-80.18.1.el8_0 | * |
| Red Hat Enterprise Linux 8.1 Extended Update Support | RedHat | kernel-0:4.18.0-147.13.2.el8_1 | * |
| Red Hat Enterprise Linux 8.1 Extended Update Support | RedHat | kpatch-patch | * |
| Red Hat Enterprise MRG 2 | RedHat | kernel-rt-1:3.10.0-693.67.1.rt56.665.el6rt | * |
| Red Hat Virtualization 4.2 for Red Hat Enterprise Linux 7.6 EUS | RedHat | kernel-0:3.10.0-957.54.1.el7 | * |
| Linux | Ubuntu | bionic | * |
| Linux | Ubuntu | disco | * |
| Linux | Ubuntu | eoan | * |
| Linux | Ubuntu | esm-infra-legacy/trusty | * |
| Linux | Ubuntu | esm-infra/bionic | * |
| Linux | Ubuntu | esm-infra/xenial | * |
| Linux | Ubuntu | precise/esm | * |
| Linux | Ubuntu | trusty | * |
| Linux | Ubuntu | trusty/esm | * |
| Linux | Ubuntu | upstream | * |
| Linux | Ubuntu | xenial | * |
| Linux-aws | Ubuntu | bionic | * |
| Linux-aws | Ubuntu | disco | * |
| Linux-aws | Ubuntu | eoan | * |
| Linux-aws | Ubuntu | esm-infra-legacy/trusty | * |
| Linux-aws | Ubuntu | esm-infra/bionic | * |
| Linux-aws | Ubuntu | esm-infra/xenial | * |
| Linux-aws | Ubuntu | trusty | * |
| Linux-aws | Ubuntu | trusty/esm | * |
| Linux-aws | Ubuntu | upstream | * |
| Linux-aws | Ubuntu | xenial | * |
| Linux-aws-5.0 | Ubuntu | bionic | * |
| Linux-aws-5.0 | Ubuntu | esm-infra/bionic | * |
| Linux-aws-5.0 | Ubuntu | upstream | * |
| Linux-aws-5.15 | Ubuntu | upstream | * |
| Linux-aws-5.3 | Ubuntu | bionic | * |
| Linux-aws-5.3 | Ubuntu | esm-infra/bionic | * |
| Linux-aws-5.3 | Ubuntu | upstream | * |
| Linux-aws-5.4 | Ubuntu | upstream | * |
| Linux-aws-6.14 | Ubuntu | upstream | * |
| Linux-aws-6.8 | Ubuntu | upstream | * |
| Linux-aws-fips | Ubuntu | fips-updates/bionic | * |
| Linux-aws-fips | Ubuntu | fips/bionic | * |
| Linux-aws-fips | Ubuntu | trusty | * |
| Linux-aws-fips | Ubuntu | upstream | * |
| Linux-aws-fips | Ubuntu | xenial | * |
| Linux-aws-hwe | Ubuntu | esm-infra/xenial | * |
| Linux-aws-hwe | Ubuntu | upstream | * |
| Linux-aws-hwe | Ubuntu | xenial | * |
| Linux-azure | Ubuntu | bionic | * |
| Linux-azure | Ubuntu | disco | * |
| Linux-azure | Ubuntu | eoan | * |
| Linux-azure | Ubuntu | esm-infra-legacy/trusty | * |
| Linux-azure | Ubuntu | esm-infra/bionic | * |
| Linux-azure | Ubuntu | esm-infra/xenial | * |
| Linux-azure | Ubuntu | trusty | * |
| Linux-azure | Ubuntu | trusty/esm | * |
| Linux-azure | Ubuntu | upstream | * |
| Linux-azure | Ubuntu | xenial | * |
| Linux-azure-4.15 | Ubuntu | upstream | * |
| Linux-azure-5.15 | Ubuntu | upstream | * |
| Linux-azure-5.3 | Ubuntu | bionic | * |
| Linux-azure-5.3 | Ubuntu | esm-infra/bionic | * |
| Linux-azure-5.3 | Ubuntu | upstream | * |
| Linux-azure-5.4 | Ubuntu | upstream | * |
| Linux-azure-6.11 | Ubuntu | upstream | * |
| Linux-azure-6.8 | Ubuntu | upstream | * |
| Linux-azure-edge | Ubuntu | bionic | * |
| Linux-azure-edge | Ubuntu | esm-infra/bionic | * |
| Linux-azure-edge | Ubuntu | upstream | * |
| Linux-azure-fde | Ubuntu | esm-infra/focal | * |
| Linux-azure-fde | Ubuntu | focal | * |
| Linux-azure-fde | Ubuntu | upstream | * |
| Linux-azure-fde-5.15 | Ubuntu | upstream | * |
| Linux-azure-fips | Ubuntu | fips-updates/bionic | * |
| Linux-azure-fips | Ubuntu | fips/bionic | * |
| Linux-azure-fips | Ubuntu | trusty | * |
| Linux-azure-fips | Ubuntu | upstream | * |
| Linux-azure-fips | Ubuntu | xenial | * |
| Linux-azure-nvidia | Ubuntu | upstream | * |
| Linux-bluefield | Ubuntu | upstream | * |
| Linux-fips | Ubuntu | fips-updates/bionic | * |
| Linux-fips | Ubuntu | fips-updates/xenial | * |
| Linux-fips | Ubuntu | fips/bionic | * |
| Linux-fips | Ubuntu | fips/xenial | * |
| Linux-fips | Ubuntu | upstream | * |
| Linux-gcp | Ubuntu | bionic | * |
| Linux-gcp | Ubuntu | disco | * |
| Linux-gcp | Ubuntu | eoan | * |
| Linux-gcp | Ubuntu | esm-infra/bionic | * |
| Linux-gcp | Ubuntu | esm-infra/xenial | * |
| Linux-gcp | Ubuntu | upstream | * |
| Linux-gcp | Ubuntu | xenial | * |
| Linux-gcp-4.15 | Ubuntu | upstream | * |
| Linux-gcp-5.15 | Ubuntu | upstream | * |
| Linux-gcp-5.3 | Ubuntu | bionic | * |
| Linux-gcp-5.3 | Ubuntu | esm-infra/bionic | * |
| Linux-gcp-5.3 | Ubuntu | upstream | * |
| Linux-gcp-5.4 | Ubuntu | upstream | * |
| Linux-gcp-6.11 | Ubuntu | upstream | * |
| Linux-gcp-6.14 | Ubuntu | upstream | * |
| Linux-gcp-6.8 | Ubuntu | upstream | * |
| Linux-gcp-edge | Ubuntu | bionic | * |
| Linux-gcp-edge | Ubuntu | esm-infra/bionic | * |
| Linux-gcp-edge | Ubuntu | upstream | * |
| Linux-gcp-fips | Ubuntu | fips/bionic | * |
| Linux-gcp-fips | Ubuntu | trusty | * |
| Linux-gcp-fips | Ubuntu | upstream | * |
| Linux-gcp-fips | Ubuntu | xenial | * |
| Linux-gke | Ubuntu | esm-infra/focal | * |
| Linux-gke | Ubuntu | focal | * |
| Linux-gke | Ubuntu | upstream | * |
| Linux-gke | Ubuntu | xenial | * |
| Linux-gke-4.15 | Ubuntu | bionic | * |
| Linux-gke-4.15 | Ubuntu | esm-infra/bionic | * |
| Linux-gke-4.15 | Ubuntu | upstream | * |
| Linux-gke-5.0 | Ubuntu | bionic | * |
| Linux-gke-5.0 | Ubuntu | upstream | * |
| Linux-gke-5.3 | Ubuntu | bionic | * |
| Linux-gke-5.3 | Ubuntu | upstream | * |
| Linux-gkeop | Ubuntu | upstream | * |
| Linux-gkeop-5.15 | Ubuntu | upstream | * |
| Linux-hwe | Ubuntu | bionic | * |
| Linux-hwe | Ubuntu | esm-infra/bionic | * |
| Linux-hwe | Ubuntu | esm-infra/xenial | * |
| Linux-hwe | Ubuntu | upstream | * |
| Linux-hwe | Ubuntu | xenial | * |
| Linux-hwe-5.15 | Ubuntu | upstream | * |
| Linux-hwe-5.4 | Ubuntu | upstream | * |
| Linux-hwe-6.11 | Ubuntu | upstream | * |
| Linux-hwe-6.14 | Ubuntu | upstream | * |
| Linux-hwe-6.8 | Ubuntu | upstream | * |
| Linux-hwe-edge | Ubuntu | bionic | * |
| Linux-hwe-edge | Ubuntu | esm-infra/bionic | * |
| Linux-hwe-edge | Ubuntu | esm-infra/xenial | * |
| Linux-hwe-edge | Ubuntu | upstream | * |
| Linux-hwe-edge | Ubuntu | xenial | * |
| Linux-ibm | Ubuntu | upstream | * |
| Linux-ibm-5.15 | Ubuntu | upstream | * |
| Linux-ibm-5.4 | Ubuntu | upstream | * |
| Linux-ibm-6.8 | Ubuntu | upstream | * |
| Linux-intel | Ubuntu | upstream | * |
| Linux-intel-iot-realtime | Ubuntu | jammy | * |
| Linux-intel-iot-realtime | Ubuntu | upstream | * |
| Linux-intel-iotg | Ubuntu | upstream | * |
| Linux-intel-iotg-5.15 | Ubuntu | upstream | * |
| Linux-iot | Ubuntu | upstream | * |
| Linux-kvm | Ubuntu | bionic | * |
| Linux-kvm | Ubuntu | disco | * |
| Linux-kvm | Ubuntu | eoan | * |
| Linux-kvm | Ubuntu | esm-infra/bionic | * |
| Linux-kvm | Ubuntu | esm-infra/xenial | * |
| Linux-kvm | Ubuntu | upstream | * |
| Linux-kvm | Ubuntu | xenial | * |
| Linux-lowlatency | Ubuntu | upstream | * |
| Linux-lowlatency-hwe-5.15 | Ubuntu | upstream | * |
| Linux-lowlatency-hwe-6.11 | Ubuntu | upstream | * |
| Linux-lowlatency-hwe-6.8 | Ubuntu | upstream | * |
| Linux-lts-trusty | Ubuntu | precise/esm | * |
| Linux-lts-trusty | Ubuntu | upstream | * |
| Linux-lts-xenial | Ubuntu | esm-infra-legacy/trusty | * |
| Linux-lts-xenial | Ubuntu | trusty | * |
| Linux-lts-xenial | Ubuntu | trusty/esm | * |
| Linux-lts-xenial | Ubuntu | upstream | * |
| Linux-nvidia | Ubuntu | upstream | * |
| Linux-nvidia-6.11 | Ubuntu | upstream | * |
| Linux-nvidia-6.5 | Ubuntu | upstream | * |
| Linux-nvidia-6.8 | Ubuntu | upstream | * |
| Linux-nvidia-lowlatency | Ubuntu | upstream | * |
| Linux-nvidia-tegra | Ubuntu | upstream | * |
| Linux-nvidia-tegra-5.15 | Ubuntu | upstream | * |
| Linux-nvidia-tegra-igx | Ubuntu | upstream | * |
| Linux-oem | Ubuntu | bionic | * |
| Linux-oem | Ubuntu | disco | * |
| Linux-oem | Ubuntu | eoan | * |
| Linux-oem | Ubuntu | esm-infra/bionic | * |
| Linux-oem | Ubuntu | upstream | * |
| Linux-oem | Ubuntu | xenial | * |
| Linux-oem-5.6 | Ubuntu | upstream | * |
| Linux-oem-6.11 | Ubuntu | upstream | * |
| Linux-oem-6.14 | Ubuntu | upstream | * |
| Linux-oem-6.8 | Ubuntu | upstream | * |
| Linux-oem-osp1 | Ubuntu | bionic | * |
| Linux-oem-osp1 | Ubuntu | disco | * |
| Linux-oem-osp1 | Ubuntu | eoan | * |
| Linux-oem-osp1 | Ubuntu | upstream | * |
| Linux-oracle | Ubuntu | bionic | * |
| Linux-oracle | Ubuntu | disco | * |
| Linux-oracle | Ubuntu | eoan | * |
| Linux-oracle | Ubuntu | esm-infra/bionic | * |
| Linux-oracle | Ubuntu | esm-infra/xenial | * |
| Linux-oracle | Ubuntu | upstream | * |
| Linux-oracle | Ubuntu | xenial | * |
| Linux-oracle-5.0 | Ubuntu | bionic | * |
| Linux-oracle-5.0 | Ubuntu | esm-infra/bionic | * |
| Linux-oracle-5.0 | Ubuntu | upstream | * |
| Linux-oracle-5.15 | Ubuntu | upstream | * |
| Linux-oracle-5.3 | Ubuntu | bionic | * |
| Linux-oracle-5.3 | Ubuntu | esm-infra/bionic | * |
| Linux-oracle-5.3 | Ubuntu | upstream | * |
| Linux-oracle-5.4 | Ubuntu | upstream | * |
| Linux-oracle-6.14 | Ubuntu | upstream | * |
| Linux-oracle-6.8 | Ubuntu | upstream | * |
| Linux-raspi | Ubuntu | upstream | * |
| Linux-raspi-5.4 | Ubuntu | upstream | * |
| Linux-raspi-realtime | Ubuntu | noble | * |
| Linux-raspi-realtime | Ubuntu | upstream | * |
| Linux-raspi2 | Ubuntu | bionic | * |
| Linux-raspi2 | Ubuntu | disco | * |
| Linux-raspi2 | Ubuntu | eoan | * |
| Linux-raspi2 | Ubuntu | esm-infra/focal | * |
| Linux-raspi2 | Ubuntu | focal | * |
| Linux-raspi2 | Ubuntu | upstream | * |
| Linux-raspi2 | Ubuntu | xenial | * |
| Linux-raspi2-5.3 | Ubuntu | bionic | * |
| Linux-raspi2-5.3 | Ubuntu | upstream | * |
| Linux-realtime | Ubuntu | jammy | * |
| Linux-realtime | Ubuntu | upstream | * |
| Linux-realtime-6.14 | Ubuntu | upstream | * |
| Linux-realtime-6.8 | Ubuntu | upstream | * |
| Linux-riscv | Ubuntu | jammy | * |
| Linux-riscv | Ubuntu | upstream | * |
| Linux-riscv-5.15 | Ubuntu | upstream | * |
| Linux-riscv-6.14 | Ubuntu | upstream | * |
| Linux-riscv-6.8 | Ubuntu | upstream | * |
| Linux-snapdragon | Ubuntu | bionic | * |
| Linux-snapdragon | Ubuntu | disco | * |
| Linux-snapdragon | Ubuntu | upstream | * |
| Linux-snapdragon | Ubuntu | xenial | * |
| Linux-xilinx-zynqmp | Ubuntu | upstream | * |