Description
A use-after-free vulnerability in the Linux Kernel traffic control index filter (tcindex) can be exploited to achieve local privilege escalation. The tcindex_delete function which does not properly deactivate filters in case of a perfect hashes while deleting the underlying structure which can later lead to double freeing the structure. A local attacker user can use this vulnerability to elevate its privileges to root. We recommend upgrading past commit 8c710f75256bb3cf05ac7b1672c82b92c43f3d28.
Details
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected Packages
| Software | From version | Fixed in |
|---|---|---|
| linux | — | 5.15.0-71.78 |
| linux-aws | — | 5.15.0-1035.39 |
| linux-aws-5.0 | — | — |
| linux-aws-5.11 | — | — |
| linux-aws-5.13 | — | — |
| linux-aws-5.15 | — | 5.15.0-1035.39~20.04.1 |
| linux-aws-5.3 | — | — |
| linux-aws-5.4 | — | 5.4.0-1101.109~18.04.1 |
| linux-aws-5.8 | — | — |
| linux-aws-fips | — | — |
| linux-aws-hwe | — | 4.15.0-1155.168~16.04.1 |
| linux-azure | — | 5.15.0-1037.44 |
| linux-azure-4.15 | — | 4.15.0-1164.179 |
| linux-azure-5.11 | — | — |
| linux-azure-5.13 | — | — |
| linux-azure-5.15 | — | 5.15.0-1037.44~20.04.1 |
| linux-azure-5.19 | — | — |
| linux-azure-5.3 | — | — |
| linux-azure-5.4 | — | 5.4.0-1107.113~18.04.1 |
| linux-azure-5.8 | — | — |
| linux-azure-edge | — | — |
| linux-azure-fde | — | 5.15.0-1037.44.1 |
| linux-azure-fde-5.19 | — | — |
| linux-azure-fips | — | — |
| linux-bluefield | — | — |
| linux-fips | — | — |
| linux-gcp | — | 5.15.0-1034.42 |
| linux-gcp-4.15 | — | 4.15.0-1149.165 |
| linux-gcp-5.11 | — | — |
| linux-gcp-5.13 | — | — |
| linux-gcp-5.15 | — | 5.15.0-1033.41~20.04.1 |
| linux-gcp-5.3 | — | — |
| linux-gcp-5.4 | — | 5.4.0-1104.113~18.04.1 |
| linux-gcp-5.8 | — | — |
| linux-gcp-fips | — | — |
| linux-gke | — | 5.15.0-1032.37 |
| linux-gke-4.15 | — | — |
| linux-gke-5.15 | — | 5.15.0-1032.37~20.04.1 |
| linux-gke-5.4 | — | — |
| linux-gkeop | — | 5.15.0-1019.24 |
| linux-gkeop-5.15 | — | 5.15.0-1019.24~20.04.1 |
| linux-gkeop-5.4 | — | — |
| linux-hwe | — | — |
| linux-hwe-5.11 | — | — |
| linux-hwe-5.13 | — | — |
| linux-hwe-5.15 | — | 5.15.0-71.78~20.04.1 |
| linux-hwe-5.19 | — | 5.19.0-41.42~22.04.1 |
| linux-hwe-5.4 | — | 5.4.0-148.165~18.04.1 |
| linux-hwe-5.8 | — | — |
| linux-hwe-edge | — | — |
| linux-ibm | — | 5.15.0-1029.32 |
| linux-ibm-5.4 | — | 5.4.0-1048.53~18.04.1 |
| linux-intel-5.13 | — | — |
| linux-intel-iot-realtime | — | 5.15.0-1028.33 |
| linux-intel-iotg | — | 5.15.0-1030.35 |
| linux-intel-iotg-5.15 | — | 5.15.0-1030.35~20.04.1 |
| linux-iot | — | 5.4.0-1017.18 |
| linux-kvm | — | 5.15.0-1032.37 |
| linux-lowlatency | — | 5.15.0-71.78 |
| linux-lowlatency-hwe-5.15 | — | 5.15.0-71.78~20.04.1 |
| linux-lowlatency-hwe-5.19 | — | — |
| linux-lts-xenial | — | 4.4.0-240.274~14.04.1 |
| linux-nvidia | — | 5.15.0-1023.23 |
| linux-nvidia-tegra-5.15 | — | 5.15.0-1014.14~20.04.1 |
| linux-oem | — | — |
| linux-oem-5.10 | — | — |
| linux-oem-5.13 | — | — |
| linux-oem-5.14 | — | — |
| linux-oem-5.17 | — | 5.17.0-1031.32 |
| linux-oem-5.6 | — | — |
| linux-oem-6.0 | — | 6.0.0-1015.15 |
| linux-oem-6.1 | — | 6.1.0-1009.9 |
| linux-oracle | — | 5.15.0-1034.40 |
| linux-oracle-5.0 | — | — |
| linux-oracle-5.11 | — | — |
| linux-oracle-5.13 | — | — |
| linux-oracle-5.15 | — | 5.15.0-1034.40~20.04.1 |
| linux-oracle-5.3 | — | — |
| linux-oracle-5.4 | — | 5.4.0-1100.109~18.04.1 |
| linux-oracle-5.8 | — | — |
| linux-raspi | — | 5.15.0-1028.30 |
| linux-raspi-5.4 | — | 5.4.0-1084.95~18.04.1 |
| linux-raspi-realtime | — | — |
| linux-raspi2 | — | — |
| linux-realtime | — | 5.15.0-1037.40 |
| linux-riscv | — | — |
| linux-riscv-5.11 | — | — |
| linux-riscv-5.15 | — | 5.15.0-1032.36~20.04.1 |
| linux-riscv-5.8 | — | — |
| linux-snapdragon | — | 4.15.0-1149.159 |
| linux-xilinx-zynqmp | — | 5.4.0-1024.28 |
References
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