Description
The __read_etc_hosts_r function in libc/inet/resolv.c in uClibc-ng before 1.0.12 allows remote DNS servers to cause a denial of service (infinite loop) via a crafted packet.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | uclibc | 1.0.20-1 | — |
| Debian 13 | uclibc | 1.0.20-1 | — |
| Debian 12 | uclibc | 1.0.20-1 | — |
| Debian 7 | uclibc | 0.9.32-1+deb7u1 | DLA-561-1 |
Advisories 1
- DLA-561-1 uclibc - security update Debian Security (DSA / DLA) · Mar 9, 2026
References
- 82903 vdb-entry
- [oss-security] 20160205 CVE Request uclibc-ng dns resolver issues mailing-list
- http://repo.or.cz/uclibc-ng.git/commit/6932f2282ba0578d6ca2f21eead920d6b78bc93c
- https://security-tracker.debian.org/tracker/CVE-2016-2225
- [oss-security] 20160205 Re: CVE Request uclibc-ng dns resolver issues mailing-list