Vulnerability · Published Jul 21, 2022 · Assigned by mitre
CVE-2020-36558
Medium 5.1
In plain English
A medium-severity security flaw in the bpftool package (AlmaLinux). There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 24% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)5.1Medium
Exploit odds (30 days)0.3%top 76.1% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
A race condition in the Linux kernel before 5.5.7 involving VT_RESIZEX could lead to a NULL pointer dereference and general protection fault.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux:8 | bpftool | 4.18.0-425.3.1.el8 | ALSA-2022:7683 |
| AlmaLinux:8 | kernel | 4.18.0-425.3.1.el8 | ALSA-2022:7683 |
| AlmaLinux:8 | kernel-abi-stablelists | 4.18.0-425.3.1.el8 | ALSA-2022:7683 |
| AlmaLinux:8 | kernel-core | 4.18.0-425.3.1.el8 | ALSA-2022:7683 |
| AlmaLinux:8 | kernel-cross-headers | 4.18.0-425.3.1.el8 | ALSA-2022:7683 |
| AlmaLinux:8 | kernel-debug | 4.18.0-425.3.1.el8 | ALSA-2022:7683 |
| AlmaLinux:8 | kernel-debug-core | 4.18.0-425.3.1.el8 | ALSA-2022:7683 |
| AlmaLinux:8 | kernel-debug-devel | 4.18.0-425.3.1.el8 | ALSA-2022:7683 |
| AlmaLinux:8 | kernel-debug-modules | 4.18.0-425.3.1.el8 | ALSA-2022:7683 |
| AlmaLinux:8 | kernel-debug-modules-extra | 4.18.0-425.3.1.el8 | ALSA-2022:7683 |
| AlmaLinux:8 | kernel-devel | 4.18.0-425.3.1.el8 | ALSA-2022:7683 |
| AlmaLinux:8 | kernel-doc | 4.18.0-425.3.1.el8 | ALSA-2022:7683 |
| AlmaLinux:8 | kernel-headers | 4.18.0-425.3.1.el8 | ALSA-2022:7683 |
| AlmaLinux:8 | kernel-modules | 4.18.0-425.3.1.el8 | ALSA-2022:7683 |
| AlmaLinux:8 | kernel-modules-extra | 4.18.0-425.3.1.el8 | ALSA-2022:7683 |
| AlmaLinux:8 | kernel-rt | 4.18.0-425.3.1.rt7.213.el8 | ALSA-2022:7444 |
| AlmaLinux:8 | kernel-rt-core | 4.18.0-425.3.1.rt7.213.el8 | ALSA-2022:7444 |
| AlmaLinux:8 | kernel-rt-debug | 4.18.0-425.3.1.rt7.213.el8 | ALSA-2022:7444 |
| AlmaLinux:8 | kernel-rt-debug-core | 4.18.0-425.3.1.rt7.213.el8 | ALSA-2022:7444 |
| AlmaLinux:8 | kernel-rt-debug-devel | 4.18.0-425.3.1.rt7.213.el8 | ALSA-2022:7444 |
| AlmaLinux:8 | kernel-rt-debug-kvm | 4.18.0-425.3.1.rt7.213.el8 | ALSA-2022:7444 |
| AlmaLinux:8 | kernel-rt-debug-modules | 4.18.0-425.3.1.rt7.213.el8 | ALSA-2022:7444 |
| AlmaLinux:8 | kernel-rt-debug-modules-extra | 4.18.0-425.3.1.rt7.213.el8 | ALSA-2022:7444 |
| AlmaLinux:8 | kernel-rt-devel | 4.18.0-425.3.1.rt7.213.el8 | ALSA-2022:7444 |
| AlmaLinux:8 | kernel-rt-kvm | 4.18.0-425.3.1.rt7.213.el8 | ALSA-2022:7444 |
| AlmaLinux:8 | kernel-rt-modules | 4.18.0-425.3.1.rt7.213.el8 | ALSA-2022:7444 |
| AlmaLinux:8 | kernel-rt-modules-extra | 4.18.0-425.3.1.rt7.213.el8 | ALSA-2022:7444 |
| AlmaLinux:8 | kernel-tools | 4.18.0-425.3.1.el8 | ALSA-2022:7683 |
| AlmaLinux:8 | kernel-tools-libs | 4.18.0-425.3.1.el8 | ALSA-2022:7683 |
| AlmaLinux:8 | kernel-tools-libs-devel | 4.18.0-425.3.1.el8 | ALSA-2022:7683 |
| AlmaLinux:8 | kernel-zfcpdump | 4.18.0-425.3.1.el8 | ALSA-2022:7683 |
| AlmaLinux:8 | kernel-zfcpdump-core | 4.18.0-425.3.1.el8 | ALSA-2022:7683 |
| AlmaLinux:8 | kernel-zfcpdump-devel | 4.18.0-425.3.1.el8 | ALSA-2022:7683 |
| AlmaLinux:8 | kernel-zfcpdump-modules | 4.18.0-425.3.1.el8 | ALSA-2022:7683 |
| AlmaLinux:8 | kernel-zfcpdump-modules-extra | 4.18.0-425.3.1.el8 | ALSA-2022:7683 |
| AlmaLinux:8 | perf | 4.18.0-425.3.1.el8 | ALSA-2022:7683 |
| AlmaLinux:8 | python3-perf | 4.18.0-425.3.1.el8 | ALSA-2022:7683 |
| Debian:12 | linux | 5.5.13-1 | DEBIAN-CVE-2020-36558 |
| Debian:13 | linux | 5.5.13-1 | DEBIAN-CVE-2020-36558 |
| Debian:14 | linux | 5.5.13-1 | DEBIAN-CVE-2020-36558 |
| Rocky Linux:8 | kernel | 0:4.18.0-425.3.1.el8 | RLSA-2022:7683 |
| Rocky Linux:8 | kernel-rt | 0:4.18.0-425.3.1.rt7.213.el8 | RLSA-2022:7444 |
| Ubuntu:22.04:LTS | linux-intel-iot-realtime | no fix listed | UBUNTU-CVE-2020-36558 |
| Ubuntu:24.04:LTS | linux-raspi-realtime | no fix listed | UBUNTU-CVE-2020-36558 |
| Ubuntu:22.04:LTS | linux-realtime | no fix listed | UBUNTU-CVE-2020-36558 |