Description
A lack of CPU resource in the Linux kernel tracing module functionality in versions prior to 5.14-rc3 was found in the way user uses trace ring buffer in a specific way. Only privileged local users (with CAP_SYS_ADMIN capability) could use this flaw to starve the resources causing denial of service.
Details
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Affected Packages
| Software | From version | Fixed in |
|---|---|---|
| linux | — | 5.4.0-88.99 |
| linux-aws | — | 5.4.0-1057.60 |
| linux-aws-5.0 | — | — |
| linux-aws-5.11 | — | 5.11.0-1019.20~20.04.1 |
| linux-aws-5.3 | — | — |
| linux-aws-5.4 | — | 5.4.0-1057.60~18.04.1 |
| linux-aws-5.8 | — | — |
| linux-aws-fips | — | — |
| linux-aws-hwe | — | 4.15.0-1112.119~16.04.1 |
| linux-azure | — | 5.4.0-1059.62 |
| linux-azure-4.15 | — | 4.15.0-1124.137 |
| linux-azure-5.11 | — | 5.11.0-1017.18~20.04.1 |
| linux-azure-5.3 | — | — |
| linux-azure-5.4 | — | 5.4.0-1059.62~18.04.1 |
| linux-azure-5.8 | — | — |
| linux-azure-edge | — | — |
| linux-azure-fips | — | — |
| linux-bluefield | — | — |
| linux-dell300x | — | 4.15.0-1028.33 |
| linux-fips | — | — |
| linux-gcp | — | 5.4.0-1053.57 |
| linux-gcp-4.15 | — | 4.15.0-1109.123 |
| linux-gcp-5.11 | — | 5.11.0-1020.22~20.04.1 |
| linux-gcp-5.3 | — | — |
| linux-gcp-5.4 | — | 5.4.0-1053.57~18.04.1 |
| linux-gcp-5.8 | — | — |
| linux-gcp-edge | — | — |
| linux-gcp-fips | — | — |
| linux-gke | — | 5.4.0-1053.56 |
| linux-gke-4.15 | — | — |
| linux-gke-5.4 | — | 5.4.0-1053.56~18.04.1 |
| linux-gkeop | — | 5.4.0-1024.25 |
| linux-gkeop-5.4 | — | 5.4.0-1024.25~18.04.1 |
| linux-hwe | — | — |
| linux-hwe-5.11 | — | 5.11.0-37.41~20.04.2 |
| linux-hwe-5.4 | — | 5.4.0-87.98~18.04.1 |
| linux-hwe-5.8 | — | — |
| linux-hwe-edge | — | — |
| linux-ibm | — | 5.4.0-1005.6 |
| linux-intel-iot-realtime | — | — |
| linux-kvm | — | 5.4.0-1047.49 |
| linux-lts-xenial | — | 4.4.0-219.252~14.04.1 |
| linux-oem | — | — |
| linux-oem-5.10 | — | 5.10.0-1050.52 |
| linux-oem-5.13 | — | 5.13.0-1014.18 |
| linux-oem-5.6 | — | — |
| linux-oracle | — | 5.4.0-1055.59 |
| linux-oracle-5.0 | — | — |
| linux-oracle-5.11 | — | 5.11.0-1019.20~20.04.1 |
| linux-oracle-5.3 | — | — |
| linux-oracle-5.4 | — | 5.4.0-1055.59~18.04.1 |
| linux-oracle-5.8 | — | — |
| linux-raspi | — | 5.4.0-1044.48 |
| linux-raspi-5.4 | — | 5.4.0-1044.48~18.04.1 |
| linux-raspi-realtime | — | — |
| linux-raspi2 | — | — |
| linux-realtime | — | — |
| linux-riscv | — | — |
| linux-riscv-5.11 | — | 5.11.0-1020.21~20.04.1 |
| linux-riscv-5.8 | — | — |
| linux-snapdragon | — | 4.15.0-1113.122 |
References
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