Description
A memory leak in glibc 2.1.1 (released on May 24, 1999) can be reached and amplified through the LD_HWCAP_MASK environment variable. Please note that many versions of glibc are not vulnerable to this issue if patched for CVE-2017-1000366.
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 | glibc | 2.25-5 | — |
| Debian 13 | glibc | 2.25-5 | — |
| Debian 12 | glibc | 2.25-5 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 16.04 LTS | glibc | 2.23-0ubuntu10 | USN-3534-1 |
| Ubuntu 14.04 LTS | eglibc | 2.19-0ubuntu6.14 | USN-3534-1 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP3 | glibc | 2.22-62.3.4 | SUSE-SU-2018:0074-1 |
| SLES 12 SP2 | glibc | 2.22-62.3.4 | SUSE-SU-2018:0074-1 |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 12 SP3 | glibc | 2.22-62.3.4 | SUSE-SU-2018:0074-1 |
| SLES for SAP 12 SP2 | glibc | 2.22-62.3.4 | SUSE-SU-2018:0074-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | glibc | 2.34-1.2 | openSUSE-SU-2024:10792-1 |
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.
Exploit-DB 1
- GNU C Library Dynamic Loader glibc ld.so - Memory Leak / Buffer Overflow EDB-43331 · local · Dec 13, 2017 · verified
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
Advisories 4
- USN-3534-1 eglibc, glibc vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- openSUSE-SU-2024:10792-1 glibc-2.34-1.2 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2018:0074-1 Security update for glibc SUSE / openSUSE Security Updates · Feb 4, 2026
- WID-SEC-2022-1478 GNU libc: Mehrere Schwachstellen BSI CERT-Bund (WID) · May 2, 2024
References
- 43331 exploit
- [oss-security] 20171211 Qualys Security Advisory - Buffer overflow in glibc's ld.so mailing-list
- https://security.netapp.com/advisory/ntap-20190404-0003/
- [oss-security] 20190627 Re: linux-distros membership application - Microsoft mailing-list
- [oss-security] 20190628 Re: linux-distros membership application - Microsoft mailing-list
- [oss-security] 20190628 Re: linux-distros membership application - Microsoft mailing-list