CVE-2021-3444
published 2021-03-23CVE-2021-3444: The bpf verifier in the Linux kernel did not properly handle mod32 destination register truncation when the source register was known to be 0. A local attacker…
high7.8CVSS 3.1
AVLACLPRLUINSUCHIHAH
The bpf verifier in the Linux kernel did not properly handle mod32 destination register truncation when the source register was known to be 0. A local attacker with the ability to load bpf programs could use this gain out-of-bounds reads in kernel memory leading to information disclosure (kernel memory), and possibly out-of-bounds writes that could potentially lead to code execution. This issue was addressed in the upstream kernel in commit 9b00f1b78809 ("bpf: Fix truncation handling for mod32 dst reg wrt zero") and in Linux stable kernels 5.11.2, 5.10.19, and 5.4.101.
Affected
38 ranges· showing 25
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| canonical | ubuntu_linux | — | — |
| canonical | ubuntu_linux | — | — |
| canonical | ubuntu_linux | — | — |
| canonical | ubuntu_linux | — | — |
| debian | debian_linux | — | — |
| debian | linux | < linux 5.10.19-1 (bookworm) | linux 5.10.19-1 (bookworm) |
| chrome_chrome | — | — | |
| linux | kernel | >= 5.10 < 5.10.19 | 5.10.19 |
| linux | kernel | >= 5.11 < 5.11.2 | 5.11.2 |
| linux | kernel | >= 5.4 < 5.4.101 | 5.4.101 |
| linux | kernel | >= trunk < 5.12-rc1 | 5.12-rc1 |
| linux | linux_kernel | < 5.4.101 | 5.4.101 |
| linux | linux_kernel | >= 0 < 5.10.19-1 | 5.10.19-1 |
| linux | linux_kernel | >= 0 < 5.10.19-1 | 5.10.19-1 |
| linux | linux_kernel | >= 0 < 5.10.19-1 | 5.10.19-1 |
| linux | linux_kernel | >= 0 < 5.10.19-1 | 5.10.19-1 |
| linux | linux_kernel | >= 0 < 5.4.0-70.78 | 5.4.0-70.78 |
| linux | linux_kernel | >= 0 < 4.4.0-203.235 | 4.4.0-203.235 |
| linux | linux_kernel | >= 0 < 4.15.0-136.140 | 4.15.0-136.140 |
| linux | linux_kernel | >= 0 < 5.4.0-70.78 | 5.4.0-70.78 |
| linux | linux_kernel | >= 5.11 < 5.11.2 | 5.11.2 |
| linux | linux_kernel | >= 5.5.0 < 5.10.19 | 5.10.19 |
| msrc | kernel-5.10.57.1-1.cm1.aarch64.rpm_on_cbl_mariner_1.0_arm | — | — |
| msrc | kernel-5.10.57.1-1.cm1.x86_64.rpm_on_cbl_mariner_1.0_x64 | — | — |
| msrc | kernel-debuginfo-5.10.57.1-1.cm1.aarch64.rpm_on_cbl_mariner_1.0_arm | — | — |
CVSS provenance
nvdv3.17.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
osv7.8HIGH