| Name | CVE-2021-31871 |
| Description | An issue was discovered in klibc before 2.0.9. An integer overflow in the cpio command may result in a NULL pointer dereference on 64-bit systems. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more) |
| NVD severity | medium |
| Debian Bugs | 989505 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| klibc (PTS) | stretch | 2.0.4-9 | vulnerable |
| buster | 2.0.6-1+deb10u1 | fixed |
| bullseye, sid | 2.0.8-6.1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|
| klibc | source | buster | 2.0.6-1+deb10u1 | | | |
| klibc | source | (unstable) | 2.0.8-6 | | | 989505 |
Notes
[stretch] - klibc <no-dsa> (Minor issue; only used in initramfs and not dealing with untrusted data)
https://git.kernel.org/pub/scm/libs/klibc/klibc.git/commit/?id=2e48a12ab1e30d43498c2d53e878a11a1b5102d5
https://www.openwall.com/lists/oss-security/2021/04/30/1