CVE-2021-47295
Fixed in a distro release EPSS 1%CVSS 7.5
In the Linux kernel, the following vulnerability has been resolved: net: sched: fix memory leak in tcindex_partial_destroy_work Syzbot reported memory leak in tcindex_set_parms(). The problem was in non-freed perfect hash in tcindex_partial_destroy_work(). In tcindex_set_parms() new tcindex_data is allocated and some fields from old one are copied to new one, but not the perfect hash. Since tcindex_partial_destroy_work() is the destroy function for old tcindex_data, we need to free perfect hash to avoid memory leak.
Products: Linux, linux_kernel
Distro releases
| Release | Package | Fixed in |
|---|---|---|
| Debian 12 | linux | 5.14.6-1 |
| Debian 13 | linux | 5.14.6-1 |
| Debian 14 | linux | 5.14.6-1 |
| SUSE Linux Enterprise High Availability Extension 12 SP5 | kernel-default | 4.12.14-122.225.1 |
| SUSE Linux Enterprise Live Patching 12 SP5 | kernel-default | 4.12.14-122.225.1 |
| SUSE Linux Enterprise Live Patching 12 SP5 | kgraft-patch-SLE12-SP5_Update_59 | 1-8.3.1 |
| SUSE Linux Enterprise Real Time 12 SP5 | kernel-rt | 4.12.14-10.197.1 |
| SUSE Linux Enterprise Real Time 12 SP5 | kernel-rt_debug | 4.12.14-10.197.1 |
| SUSE Linux Enterprise Real Time 12 SP5 | kernel-source-rt | 4.12.14-10.197.1 |
| SUSE Linux Enterprise Real Time 12 SP5 | kernel-syms-rt | 4.12.14-10.197.1 |
| SUSE Linux Enterprise Server 12 SP5 | kernel-azure | 4.12.14-16.194.1 |
| SUSE Linux Enterprise Server 12 SP5 | kernel-default | 4.12.14-122.225.1 |
| SUSE Linux Enterprise Server 12 SP5 | kernel-source | 4.12.14-122.225.1 |
| SUSE Linux Enterprise Server 12 SP5 | kernel-source-azure | 4.12.14-16.194.1 |
| SUSE Linux Enterprise Server 12 SP5 | kernel-syms | 4.12.14-122.225.1 |
| SUSE Linux Enterprise Server 12 SP5 | kernel-syms-azure | 4.12.14-16.194.1 |
| SUSE Linux Enterprise Server for SAP Applications 12 SP5 | kernel-azure | 4.12.14-16.194.1 |
| SUSE Linux Enterprise Server for SAP Applications 12 SP5 | kernel-default | 4.12.14-122.225.1 |
| SUSE Linux Enterprise Server for SAP Applications 12 SP5 | kernel-source | 4.12.14-122.225.1 |
| SUSE Linux Enterprise Server for SAP Applications 12 SP5 | kernel-source-azure | 4.12.14-16.194.1 |
| SUSE Linux Enterprise Server for SAP Applications 12 SP5 | kernel-syms | 4.12.14-122.225.1 |
| SUSE Linux Enterprise Server for SAP Applications 12 SP5 | kernel-syms-azure | 4.12.14-16.194.1 |
| SUSE Linux Enterprise Software Development Kit 12 SP5 | kernel-docs | 4.12.14-122.225.2 |
| SUSE Linux Enterprise Software Development Kit 12 SP5 | kernel-obs-build | 4.12.14-122.225.1 |
| SUSE Linux Enterprise Workstation Extension 12 SP5 | kernel-default | 4.12.14-122.225.1 |
| Ubuntu 16.04 LTS | linux-hwe-edge | no fix |
| 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 | 5.4.0-1057.60~18.04.1 |
| Ubuntu 18.04 LTS | linux-azure | no fix |
| Ubuntu 18.04 LTS | linux-azure-5.3 | no fix |
| Ubuntu 18.04 LTS | linux-azure-5.4 | 5.4.0-1059.62~18.04.1 |
| Ubuntu 18.04 LTS | linux-azure-edge | no fix |
| Ubuntu 18.04 LTS | linux-gcp | no fix |
| Ubuntu 18.04 LTS | linux-gcp-5.3 | no fix |
| Ubuntu 18.04 LTS | linux-gcp-5.4 | 5.4.0-1053.57~18.04.1 |
| Ubuntu 18.04 LTS | linux-gke-4.15 | no fix |
| Ubuntu 18.04 LTS | linux-gke-5.4 | no fix |
| Ubuntu 18.04 LTS | linux-gkeop-5.4 | no fix |
| Ubuntu 18.04 LTS | linux-hwe | no fix |
| Ubuntu 18.04 LTS | linux-hwe-5.4 | 5.4.0-87.98~18.04.1 |
| Ubuntu 18.04 LTS | linux-hwe-edge | no fix |
| Ubuntu 18.04 LTS | linux-oem | no fix |
| 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 | 5.4.0-1055.59~18.04.1 |
| Ubuntu 18.04 LTS | linux-raspi-5.4 | 5.4.0-1044.48~18.04.1 |
| Ubuntu 20.04 LTS | linux | 5.4.0-88.99 |
| Ubuntu 20.04 LTS | linux-aws | 5.4.0-1057.60 |
| Ubuntu 20.04 LTS | linux-aws-5.11 | no fix |
| Ubuntu 20.04 LTS | linux-aws-5.13 | no fix |
| Ubuntu 20.04 LTS | linux-aws-5.8 | no fix |
| Ubuntu 20.04 LTS | linux-azure | 5.4.0-1059.62 |
| Ubuntu 20.04 LTS | linux-azure-5.11 | no fix |
| Ubuntu 20.04 LTS | linux-azure-5.13 | no fix |
| Ubuntu 20.04 LTS | linux-azure-5.8 | no fix |
| Ubuntu 20.04 LTS | linux-azure-fde | no fix |
| Ubuntu 20.04 LTS | linux-bluefield | 5.4.0-1019.22 |
| Ubuntu 20.04 LTS | linux-gcp | 5.4.0-1053.57 |
| Ubuntu 20.04 LTS | linux-gcp-5.11 | no fix |
| Ubuntu 20.04 LTS | linux-gcp-5.13 | no fix |
| Ubuntu 20.04 LTS | linux-gcp-5.8 | no fix |
| Ubuntu 20.04 LTS | linux-gke | no fix |
| Ubuntu 20.04 LTS | linux-gke-5.15 | no fix |
| Ubuntu 20.04 LTS | linux-gkeop | 5.4.0-1024.25 |
| Ubuntu 20.04 LTS | linux-hwe-5.11 | no fix |
| Ubuntu 20.04 LTS | linux-hwe-5.13 | no fix |
| Ubuntu 20.04 LTS | linux-hwe-5.8 | no fix |
| Ubuntu 20.04 LTS | linux-ibm | 5.4.0-1005.6 |
| Ubuntu 20.04 LTS | linux-intel-5.13 | no fix |
| Ubuntu 20.04 LTS | linux-kvm | 5.4.0-1047.49 |
| Ubuntu 20.04 LTS | linux-oem-5.10 | no fix |
| Ubuntu 20.04 LTS | linux-oem-5.13 | no fix |
| Ubuntu 20.04 LTS | linux-oem-5.14 | no fix |
| Ubuntu 20.04 LTS | linux-oem-5.6 | no fix |
| Ubuntu 20.04 LTS | linux-oracle | 5.4.0-1055.59 |
| Ubuntu 20.04 LTS | linux-oracle-5.11 | no fix |
| Ubuntu 20.04 LTS | linux-oracle-5.13 | no fix |
| Ubuntu 20.04 LTS | linux-oracle-5.8 | no fix |
| Ubuntu 20.04 LTS | linux-raspi | 5.4.0-1044.48 |
| Ubuntu 20.04 LTS | linux-raspi2 | no fix |
| Ubuntu 20.04 LTS | linux-riscv | no fix |
| Ubuntu 20.04 LTS | linux-riscv-5.11 | no fix |
| Ubuntu 20.04 LTS | linux-riscv-5.8 | no fix |
| Ubuntu 22.04 LTS | linux-allwinner-5.19 | no fix |
| Ubuntu 22.04 LTS | linux-aws-5.19 | no fix |
| Ubuntu 22.04 LTS | linux-aws-6.2 | no fix |
| Ubuntu 22.04 LTS | linux-azure-5.19 | no fix |
| Ubuntu 22.04 LTS | linux-azure-6.2 | no fix |
| Ubuntu 22.04 LTS | linux-azure-fde-5.19 | no fix |
| Ubuntu 22.04 LTS | linux-azure-fde-6.2 | no fix |
| Ubuntu 22.04 LTS | linux-gcp-5.19 | no fix |
| Ubuntu 22.04 LTS | linux-gcp-6.2 | no fix |
| Ubuntu 22.04 LTS | linux-hwe-5.19 | no fix |
| Ubuntu 22.04 LTS | linux-hwe-6.2 | no fix |
| Ubuntu 22.04 LTS | linux-intel-iot-realtime | no fix |
| Ubuntu 22.04 LTS | linux-lowlatency-hwe-5.19 | no fix |
| Ubuntu 22.04 LTS | linux-lowlatency-hwe-6.2 | no fix |
| Ubuntu 22.04 LTS | linux-nvidia-6.2 | no fix |
| Ubuntu 22.04 LTS | linux-oem-5.17 | no fix |
| Ubuntu 22.04 LTS | linux-oem-6.0 | no fix |
| Ubuntu 22.04 LTS | linux-oem-6.1 | no fix |
| Ubuntu 22.04 LTS | linux-realtime | no fix |
| Ubuntu 22.04 LTS | linux-riscv | no fix |
| Ubuntu 22.04 LTS | linux-riscv-5.19 | no fix |
| Ubuntu 22.04 LTS | linux-starfive-5.19 | no fix |
| Ubuntu 22.04 LTS | linux-starfive-6.2 | no fix |
| Ubuntu 24.04 LTS | linux-raspi-realtime | no fix |
| Ubuntu Pro 14.04 LTS | linux-aws | no fix |
| Ubuntu Pro 14.04 LTS | linux-azure | no fix |
| Ubuntu Pro 14.04 LTS | linux-lts-xenial | no fix |
| Ubuntu Pro 16.04 LTS | linux | no fix |
| Ubuntu Pro 16.04 LTS | linux-aws | no fix |
| Ubuntu Pro 16.04 LTS | linux-aws-hwe | no fix |
| Ubuntu Pro 16.04 LTS | linux-azure | no fix |
| Ubuntu Pro 16.04 LTS | linux-gcp | no fix |
| Ubuntu Pro 16.04 LTS | linux-hwe | no fix |
| Ubuntu Pro 16.04 LTS | linux-kvm | no fix |
| Ubuntu Pro 16.04 LTS | linux-oracle | no fix |
| Ubuntu Pro 18.04 LTS | linux | no fix |
| Ubuntu Pro 18.04 LTS | linux-aws | no fix |
| Ubuntu Pro 18.04 LTS | linux-azure-4.15 | no fix |
| Ubuntu Pro 18.04 LTS | linux-gcp-4.15 | no fix |
| Ubuntu Pro 18.04 LTS | linux-kvm | no fix |
| Ubuntu Pro 18.04 LTS | linux-oracle | no fix |
| Ubuntu Pro FIPS-updates 16.04 LTS | linux-fips | no fix |
| Ubuntu Pro FIPS-updates 18.04 LTS | linux-aws-fips | no fix |
| Ubuntu Pro FIPS-updates 18.04 LTS | linux-azure-fips | no fix |
| Ubuntu Pro FIPS-updates 18.04 LTS | linux-fips | no fix |
| Ubuntu Pro FIPS-updates 18.04 LTS | linux-gcp-fips | no fix |
| 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 | 5.4.0-1034.40 |
| 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-fips | no fix |
| Ubuntu Pro FIPS 20.04 LTS | linux-gcp-fips | no fix |