Description
A heap-based buffer overflow was found in the Linux kernel's LightNVM subsystem. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length heap-based buffer. This vulnerability allows a local attacker to escalate privileges and execute arbitrary code in the context of the kernel. The attacker must first obtain the ability to execute high-privileged code on the target system to exploit this vulnerability.
Details
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Affected Packages
| Software | From version | Fixed in |
|---|---|---|
| linux | — | 5.4.0-122.138 |
| linux-aws | — | 5.4.0-1081.88 |
| linux-aws-5.0 | — | — |
| linux-aws-5.11 | — | — |
| linux-aws-5.13 | — | — |
| linux-aws-5.3 | — | — |
| linux-aws-5.4 | — | 5.4.0-1081.88~18.04.1 |
| linux-aws-5.8 | — | — |
| linux-aws-fips | — | — |
| linux-aws-hwe | — | 4.15.0-1139.150~16.04.1 |
| linux-azure | — | 5.4.0-1086.91 |
| linux-azure-4.15 | — | 4.15.0-1149.164 |
| linux-azure-5.11 | — | — |
| linux-azure-5.13 | — | — |
| linux-azure-5.3 | — | — |
| linux-azure-5.4 | — | 5.4.0-1086.91~18.04.1 |
| linux-azure-5.8 | — | — |
| linux-azure-edge | — | — |
| linux-azure-fips | — | — |
| linux-bluefield | — | — |
| linux-dell300x | — | 4.15.0-1051.56 |
| linux-fips | — | — |
| linux-gcp | — | 5.4.0-1084.92 |
| linux-gcp-4.15 | — | 4.15.0-1134.150 |
| linux-gcp-5.11 | — | — |
| linux-gcp-5.13 | — | — |
| linux-gcp-5.3 | — | — |
| linux-gcp-5.4 | — | 5.4.0-1084.92~18.04.1 |
| linux-gcp-5.8 | — | — |
| linux-gcp-fips | — | — |
| linux-gke | — | 5.4.0-1078.84 |
| linux-gke-4.15 | — | — |
| linux-gke-5.4 | — | — |
| linux-gkeop | — | 5.4.0-1049.52 |
| linux-gkeop-5.4 | — | — |
| linux-hwe | — | — |
| linux-hwe-5.11 | — | — |
| linux-hwe-5.13 | — | — |
| linux-hwe-5.4 | — | 5.4.0-122.138~18.04.1 |
| linux-hwe-5.8 | — | — |
| linux-hwe-edge | — | — |
| linux-ibm | — | 5.4.0-1029.33 |
| linux-ibm-5.4 | — | 5.4.0-1029.33~18.04.1 |
| linux-intel-5.13 | — | — |
| linux-intel-iot-realtime | — | — |
| linux-iot | — | 5.4.0-1004.6 |
| linux-kvm | — | 5.4.0-1071.76 |
| linux-lts-xenial | — | 4.4.0-239.273~14.04.1 |
| linux-oem | — | — |
| linux-oem-5.10 | — | — |
| linux-oem-5.13 | — | — |
| linux-oem-5.14 | — | — |
| linux-oem-5.6 | — | — |
| linux-oracle | — | 5.4.0-1079.87 |
| linux-oracle-5.0 | — | — |
| linux-oracle-5.11 | — | — |
| linux-oracle-5.13 | — | — |
| linux-oracle-5.3 | — | — |
| linux-oracle-5.4 | — | 5.4.0-1079.87~18.04.1 |
| linux-oracle-5.8 | — | — |
| linux-raspi | — | 5.4.0-1066.76 |
| linux-raspi-5.4 | — | 5.4.0-1066.76~18.04.1 |
| linux-raspi-realtime | — | — |
| linux-raspi2 | — | — |
| linux-realtime | — | — |
| linux-riscv | — | — |
| linux-riscv-5.11 | — | — |
| linux-riscv-5.8 | — | — |
| linux-snapdragon | — | 4.15.0-1135.145 |
References
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