Vulnerability · Published Sep 15, 2020 · Assigned by redhat
CVE-2020-10767
Medium 5.5
In plain English
A medium-severity security flaw in kernel from Linux Kernel. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 32% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
A flaw was found in the Linux kernel before 5.8-rc1 in the implementation of the Enhanced IBPB (Indirect Branch Prediction Barrier). The IBPB mitigation will be disabled when STIBP is not available or when the Enhanced Indirect Branch Restricted Speculation (IBRS) is available. This flaw allows a local attacker to perform a Spectre V2 style attack when this configuration is active. The highest threat from this vulnerability is to confidentiality.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | linux | 5.7.6-1 | DEBIAN-CVE-2020-10767 |
| Debian:13 | linux | 5.7.6-1 | DEBIAN-CVE-2020-10767 |
| Debian:14 | linux | 5.7.6-1 | DEBIAN-CVE-2020-10767 |
| Ubuntu:22.04:LTS | linux-intel-iot-realtime | no fix listed | UBUNTU-CVE-2020-10767 |
| Ubuntu:24.04:LTS | linux-raspi-realtime | no fix listed | UBUNTU-CVE-2020-10767 |
| Ubuntu:22.04:LTS | linux-realtime | no fix listed | UBUNTU-CVE-2020-10767 |
| Ubuntu:22.04:LTS | linux-riscv | no fix listed | UBUNTU-CVE-2020-10767 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Linux Kernel | kernel | before 5.8-rc1 |
Weakness: CWE-440 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N