Description
glibc contains a vulnerability that allows specially crafted LD_LIBRARY_PATH values to manipulate the heap/stack, causing them to alias, potentially resulting in arbitrary code execution. Please note that additional hardening changes have been made to glibc to prevent manipulation of stack and heap memory but these issues are not directly exploitable, as such they have not been given a CVE. This affects glibc 2.25 and earlier.
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 | 2.24-12 | — |
| Debian 13 | glibc | 2.24-12 | — |
| Debian 12 | glibc | 2.24-12 | — |
| Debian 9 | glibc | 2.24-11+deb9u1 | DSA-3887-1 |
| Debian 8 | glibc | 2.19-18+deb8u10 | DSA-3887-1 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 7 | eglibc | 2.13-38+deb7u12 | DLA-992-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 16.04 LTS | glibc | 2.23-0ubuntu9 | USN-3323-1 |
| Ubuntu 14.04 LTS | eglibc | 2.19-0ubuntu6.13 | USN-3323-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 7 | nscd +7 | 2.17-157.el7_3.4 | RHSA-2017:1481 |
| RHEL 6 | nscd +7 | 2.12-1.209.el6_9.2 | RHSA-2017:1480 |
Show 10 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat Rhel Mission Critical 6 | nscd +7 | 2.12-1.47.el6_2.18 | RHSA-2017:1479 |
| RHEL 7.2 EUS | nscd +7 | 2.17-106.el7_2.9 | RHSA-2017:1479 |
| RHEL 6.7 EUS | nscd +7 | 2.12-1.166.el6_7.8 | RHSA-2017:1479 |
| RHEL 6.6 TUS | nscd +7 | 2.12-1.149.el6_6.12 | RHSA-2017:1479 |
| RHEL 6.6 AUS | nscd +7 | 2.12-1.149.el6_6.12 | RHSA-2017:1479 |
| RHEL 6.5 TUS | nscd +7 | 2.12-1.132.el6_5.9 | RHSA-2017:1479 |
| RHEL 6.5 AUS | nscd +7 | 2.12-1.132.el6_5.9 | RHSA-2017:1479 |
| RHEL 6.4 AUS | nscd +7 | 2.12-1.107.el6_4.10 | RHSA-2017:1479 |
| RHEL 5.9 AUS | nscd +6 | 2.5-107.el5_9.9 | RHSA-2017:1479 |
| RHEL 5 ELS | nscd +6 | 2.5-123.el5_11.4 | RHSA-2017:1479 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP2 | glibc | 2.22-61.3 | SUSE-SU-2017:1619-1 |
| SLES 12 SP1 | glibc | 2.19-40.6.1 | SUSE-SU-2017:1614-1 |
| SLES 12 | glibc | 2.19-22.21.1 | SUSE-SU-2017:1611-1 |
| SLES 11 SP4 | glibc | 2.11.3-17.109.1 | SUSE-SU-2017:1621-1 |
| SLES 11 SP3 | glibc | 2.11.3-17.109.1 | SUSE-SU-2017:1621-1 |
Show 6 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 12 SP2 | glibc | 2.22-61.3 | SUSE-SU-2017:1619-1 |
| SLES for SAP 12 SP1 | glibc | 2.19-40.6.1 | SUSE-SU-2017:1614-1 |
| SLES for SAP 12 | glibc | 2.19-22.21.1 | SUSE-SU-2017:1611-1 |
| SLES for SAP 11 SP4 | glibc | 2.11.3-17.109.1 | SUSE-SU-2017:1621-1 |
| SUSE OpenStack Cloud 6 | glibc | 2.19-40.6.1 | SUSE-SU-2017:1614-1 |
| SUSE Linux Enterprise Point of Sale 11 SP3 | glibc | 2.11.3-17.109.1 | SUSE-SU-2017:1621-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | glibc | 2.34-1.2 | openSUSE-SU-2024:10792-1 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 7 | nscd +6 | 2.17-157.el7_3.4 | ELSA-2017-1481 |
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 3
- Linux Kernel (Debian 7/8/9/10 / Fedora 23/24/25 / CentOS 5.3/5.11/6.0/6.8/7.2.1511) - 'ldso_hwcap Stack Clash' Local Privilege Escalation EDB-42274 · local · Jun 28, 2017 · verified
- Linux Kernel (Debian 7.7/8.5/9.0 / Ubuntu 14.04.2/16.04.2/17.04 / Fedora 22/25 / CentOS 7.3.1611) - 'ldso_hwcap_64 Stack Clash' Local Privilege Escalation EDB-42275 · local · Jun 28, 2017 · verified
- Linux Kernel (Debian 9/10 / Ubuntu 14.04.5/16.04.2/17.04 / Fedora 23/24/25) - 'ldso_dynamic Stack Clash' Local Privilege Escalation EDB-42276 · local · Jun 28, 2017 · verified
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
Advisories 12
- RHSA-2017:1480 Red Hat Security Advisory: glibc security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- RHSA-2017:1481 Red Hat Security Advisory: glibc security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- RHSA-2017:1479 Red Hat Security Advisory: glibc security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- USN-3323-1 eglibc, glibc vulnerability Ubuntu Security Notices (USN) · Apr 22, 2026
- DSA-3887-1 glibc - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-992-1 eglibc - security update Debian Security (DSA / DLA) · Mar 9, 2026
- SUSE-SU-2017:1614-1 Security update for glibc SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:10792-1 glibc-2.34-1.2 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2017:1611-1 Security update for glibc SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2017:1621-1 Security update for glibc SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2017:1619-1 Security update for glibc SUSE / openSUSE Security Updates · May 2, 2025
- ELSA-2017-1481 Important: glibc security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Jun 19, 2017
References
- https://www.qualys.com/2017/06/19/stack-clash/stack-clash.txt
- 1038712 vdb-entry
- 42275 exploit
- RHSA-2017:1712 vendor-advisory
- https://www.suse.com/security/cve/CVE-2017-1000366/
- RHSA-2017:1479 vendor-advisory
- RHSA-2017:1480 vendor-advisory
- 99127 vdb-entry
- 42276 exploit
- https://www.suse.com/support/kb/doc/?id=7020973
- RHSA-2017:1567 vendor-advisory
- 42274 exploit
- https://access.redhat.com/security/cve/CVE-2017-1000366
- RHSA-2017:1481 vendor-advisory
- DSA-3887 vendor-advisory
- GLSA-201706-19 vendor-advisory
- https://kc.mcafee.com/corporate/index?page=content&id=SB10205
- 20190904 SEC Consult SA-20190904-0 :: Multiple vulnerabilities in Cisco router series RV34X, RV26X and RV16X mailing-list
- 20190904 SEC Consult SA-20190904-0 :: Multiple vulnerabilities in Cisco router series RV34X, RV26X and RV16X mailing-list
- http://packetstormsecurity.com/files/154361/Cisco-Device-Hardcoded-Credentials-GNU-glibc-BusyBox.html