Description
The Linux Kernel running on AMD64 systems will sometimes map the contents of PIE executable, the heap or ld.so to where the stack is mapped allowing attackers to more easily manipulate the stack. Linux Kernel version 4.11.5 is affected.
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 | linux | 4.11.6-1 | — |
| Debian 13 | linux | 4.11.6-1 | — |
| Debian 12 | linux | 4.11.6-1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 24.04 LTS | linux-raspi-realtime | No fix yet | — |
| Ubuntu 22.04 LTS | linux-riscv +2 | No fix yet | — |
| Ubuntu 20.04 LTS | linux-gke +3 | No fix yet | — |
| Ubuntu 16.04 LTS | linux | 4.4.0-81.104 | — |
| Ubuntu 16.04 LTS | linux-aws | 4.4.0-1020.29 | — |
| Ubuntu 16.04 LTS | linux-gke | 4.4.0-1016.16 | — |
| Ubuntu 16.04 LTS | linux-hwe | 4.8.0-56.61~16.04.1 | — |
| Ubuntu 16.04 LTS | linux-raspi2 | 4.4.0-1059.67 | — |
| Ubuntu 16.04 LTS | linux-snapdragon | 4.4.0-1061.66 | — |
| Ubuntu 14.04 LTS | linux | 3.13.0-121.170 | — |
| Ubuntu 14.04 LTS | linux-lts-xenial | 4.4.0-81.104~14.04.1 | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 7 | kernel-rt +10 | 3.10.0-514.26.1.rt56.442.el7 | RHSA-2017:1616 |
| RHEL 7 | perf +18 | 3.10.0-514.21.2.el7 | RHSA-2017:1842, RHSA-2017:1484 |
| RHEL 6 | perf +16 | 2.6.32-696.3.2.el6 | RHSA-2017:1486 |
Show 10 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat Rhel Mission Critical 6 | perf +9 | 2.6.32-220.72.2.el6 | RHSA-2017:1491 |
| RHEL 7.2 EUS | perf +18 | 3.10.0-327.55.2.el7 | RHSA-2017:1485 |
| RHEL 6.7 EUS | perf +16 | 2.6.32-573.42.2.el6 | RHSA-2017:1487 |
| RHEL 6.6 TUS | perf +10 | 2.6.32-504.60.2.el6 | RHSA-2017:1488 |
| RHEL 6.6 AUS | perf +10 | 2.6.32-504.60.2.el6 | RHSA-2017:1488 |
| RHEL 6.5 TUS | perf +10 | 2.6.32-431.80.2.el6 | RHSA-2017:1489 |
| RHEL 6.5 AUS | perf +10 | 2.6.32-431.80.2.el6 | RHSA-2017:1489 |
| RHEL 6.4 AUS | perf +9 | 2.6.32-358.79.2.el6 | RHSA-2017:1490 |
| RHEL 5 ELS | kernel +12 | 2.6.18-420.el5 | RHSA-2017:1482 |
| Red Hat MRG 2 | kernel-rt +10 | 1:3.10.0-514.rt56.228.el6rt | RHSA-2017:1647 |
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
- 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
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
Advisories 12
- RHSA-2017:1842 Red Hat Security Advisory: kernel security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Jul 1, 2026
- RHSA-2017:1647 Red Hat Security Advisory: kernel-rt security and bug fix update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- RHSA-2017:1616 Red Hat Security Advisory: kernel-rt security and bug fix update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- RHSA-2017:1490 Red Hat Security Advisory: kernel security update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- RHSA-2017:1491 Red Hat Security Advisory: kernel security and bug fix update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- RHSA-2017:1489 Red Hat Security Advisory: kernel security update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- RHSA-2017:1488 Red Hat Security Advisory: kernel security and bug fix update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- RHSA-2017:1486 Red Hat Security Advisory: kernel security update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- RHSA-2017:1487 Red Hat Security Advisory: kernel security update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- RHSA-2017:1484 Red Hat Security Advisory: kernel security update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- RHSA-2017:1485 Red Hat Security Advisory: kernel security update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- RHSA-2017:1482 Red Hat Security Advisory: kernel security update Red Hat Security Advisories (RHSA) · Jun 29, 2026
References
- RHSA-2017:1491 vendor-advisory
- RHSA-2017:1486 vendor-advisory
- RHSA-2017:1489 vendor-advisory
- RHSA-2017:1490 vendor-advisory
- https://access.redhat.com/security/cve/CVE-2017-1000379
- https://www.qualys.com/2017/06/19/stack-clash/stack-clash.txt
- RHSA-2017:1482 vendor-advisory
- RHSA-2017:1647 vendor-advisory
- 99284 vdb-entry
- 42275 exploit
- RHSA-2017:1616 vendor-advisory
- RHSA-2017:1712 vendor-advisory
- RHSA-2017:1487 vendor-advisory
- RHSA-2017:1484 vendor-advisory
- RHSA-2017:1842 vendor-advisory
- RHSA-2017:1485 vendor-advisory
- RHSA-2017:1488 vendor-advisory