CVE-2021-27645
glibcVulnerabilityCVSS 2.5Patched
No public exploitation has been reported so far. 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 : 2.5 LOW · CVSS 2.0 : 1.9 LOW
Attack vectorLocal
Attack complexityHigh
Privileges requiredLow
User interactionNone
ScopeUnchanged
Confidentiality impactNone
Integrity impactNone
Availability impactLow
Vector: AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L
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 | glibc | 2.33-5 | 2.34-1 | fixed |
| Debian:11 | glibc | - | 2.31-10 | fixed |
| Debian:12 | glibc | - | 2.31-10 | fixed |
| Debian:13 | glibc | - | 2.31-10 | fixed |
| Debian:14 | glibc | - | 2.31-10 | fixed |
| Debian:10 | glibc | - | 2.28-10+deb10u2 | fixed |
| Ubuntu:20.04:LTS | glibc | - | 2.31-0ubuntu9.7 | fixed |
| Ubuntu:18.04:LTS | glibc | - | 2.27-3ubuntu1.5 | fixed |
| openSUSE:Tumbleweed | glibc | - | 2.34-1.2 | fixed |
| Red Hat:enterprise_linux:8::baseos | glibc | - | 0:2.28-164.el8 | fixed |