CVE-2021-43267
linux-hardenedVulnerabilityCVSS 9.8PatchedPoC
A public proof-of-concept or exploit code is available, raising the risk of active exploitation. A fixed version is available (see the table below).
Recommended action: Update to the fixed version listed for your distribution using the native package manager.
Severity metrics
CVSS 3.1 : 9.8 CRITICAL · CVSS 2.0 : 7.5 HIGH
Attack vectorNetwork (remote)
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
Confidentiality impactHigh
Integrity impactHigh
Availability impactHigh
Vector: AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected & fixed versions by distribution
Versions are the native distribution strings (backport-aware): RHEL/Debian/SUSE backport fixes, so compare with the distro version comparator (dpkg / rpm / vercmp), not the upstream version.
| Distribution | Package | Affected | Fixed version | Status |
|---|---|---|---|---|
| Arch | linux-hardened | 5.14.14.hardened1-1 | 5.14.16.hardened1-1 | fixed |
| Arch | linux-lts | 5.10.76-1 | 5.10.77-1 | fixed |
| Arch | linux-zen | 5.14.15.zen1-1 | 5.14.16.zen1-1 | fixed |
| Arch | linux | 5.14.15.arch1-1 | 5.14.16.arch1-1 | fixed |
| Debian:11 | linux | - | 5.10.84-1 | fixed |
| Debian:12 | linux | - | 5.14.16-1 | fixed |
| Debian:13 | linux | - | 5.14.16-1 | fixed |
| Debian:14 | linux | - | 5.14.16-1 | fixed |
| Red Hat:enterprise_linux:8::baseos | kernel | - | 0:4.18.0-348.2.1.el8_5 | fixed |
| Red Hat:rhel_eus:8.4::baseos | kernel | - | 0:4.18.0-305.28.1.el8_4 | fixed |