CVE-2021-27364
linux-hardenedVulnerabilityCVSS 7.1PatchedPoC
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 : 7.1 HIGH · CVSS 2.0 : 3.6 LOW
Attack vectorLocal
Attack complexityLow
Privileges requiredLow
User interactionNone
ScopeUnchanged
Confidentiality impactHigh
Integrity impactNone
Availability impactHigh
Vector: AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/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 | 5.10.19.hardened1-1 | 5.10.21.hardened1-1 | fixed |
| Arch | linux-lts | 5.10.20-1 | 5.10.21-1 | fixed |
| Arch | linux-zen | 5.11.3.zen1-1 | 5.11.4.zen1-1 | fixed |
| Arch | linux | 5.11.3.arch1-1 | 5.11.4.arch1-1 | fixed |
| Debian:11 | linux | - | 5.10.24-1 | fixed |
| Debian:12 | linux | - | 5.10.24-1 | fixed |
| Debian:13 | linux | - | 5.10.24-1 | fixed |
| Debian:14 | linux | - | 5.10.24-1 | fixed |
| SUSE:Linux Enterprise Module for Basesystem 15 SP2 | kernel-default-base | - | 5.3.18-24.61.1.9.26.4 | fixed |
| SUSE:Linux Enterprise Micro 5.0 | kernel-default-base | - | 5.3.18-24.61.1.9.26.4 | fixed |
| SUSE:Linux Enterprise Module for Basesystem 15 SP3 | kernel-default-base | - | 5.3.18-59.5.2.18.2.2 | fixed |
| openSUSE:Leap 15.2 | kernel-default | - | 5.3.18-lp152.69.1 | fixed |
| openSUSE:Leap 15.3 | kernel-default | - | 5.3.18-59.5.2 | fixed |
| openSUSE:Leap 15.2 | kernel-default-base | - | 5.3.18-lp152.69.1.lp152.8.28.1 | fixed |
| openSUSE:Leap 15.3 | kernel-default-base | - | 5.3.18-59.5.2.18.2.2 | fixed |
| Red Hat:enterprise_linux:7::client | kernel | - | 0:3.10.0-1160.24.1.el7 | fixed |
| Red Hat:enterprise_linux:7::server | kernel | - | 0:3.10.0-1160.24.1.el7 | fixed |
| Red Hat:enterprise_linux:7::workstation | kernel | - | 0:3.10.0-1160.24.1.el7 | fixed |
| Red Hat:enterprise_linux:8::baseos | kernel | - | 0:4.18.0-240.22.1.el8_3 | fixed |
| Red Hat:rhel_eus:8.1::baseos | kernel | - | 0:4.18.0-147.44.1.el8_1 | fixed |
| Red Hat:rhel_aus:7.4::server | kernel | - | 0:3.10.0-693.84.1.el7 | fixed |
| Red Hat:rhel_e4s:7.4::server | kernel | - | 0:3.10.0-693.84.1.el7 | fixed |
| Red Hat:rhel_tus:7.4::server | kernel | - | 0:3.10.0-693.84.1.el7 | fixed |
| Red Hat:rhel_eus:8.2::baseos | kernel | - | 0:4.18.0-193.51.1.el8_2 | fixed |
| Red Hat:rhel_els:6 | kernel | - | 0:2.6.32-754.39.1.el6 | fixed |
| Red Hat:rhel_aus:7.2::server | kernel | - | 0:3.10.0-327.96.1.el7 | fixed |
| Red Hat:rhel_aus:7.3::server | kernel | - | 0:3.10.0-514.88.1.el7 | fixed |
| Red Hat:rhel_eus:7.6::computenode | kernel | - | 0:3.10.0-957.72.1.el7 | fixed |
| Red Hat:rhel_eus:7.6::server | kernel | - | 0:3.10.0-957.72.1.el7 | fixed |
| Red Hat:enterprise_linux:7::server | kernel | - | 0:4.14.0-115.36.1.el7a | fixed |
| Red Hat:rhel_eus:7.7::computenode | kernel | - | 0:3.10.0-1062.49.1.el7 | fixed |
| Red Hat:rhel_eus:7.7::server | kernel | - | 0:3.10.0-1062.49.1.el7 | fixed |