CVE-2018-17972
UnknownEPSS 0.35%
Last modified
CVE-2018-17972 is a vulnerability of currently unknown severity. An issue was discovered in the proc_pid_stack function in fs/proc/base.c in the Linux kernel through 4.18.11. It does not ensure that only root may inspect the kernel stack of an arbitrary task, allowing a local attacker to exploit racy stack unwinding and leak kernel task stack contents.. EPSS estimates a 0.35% chance of exploitation in the next 30 days.
Description
An issue was discovered in the proc_pid_stack function in fs/proc/base.c in the Linux kernel through 4.18.11. It does not ensure that only root may inspect the kernel stack of an arbitrary task, allowing a local attacker to exploit racy stack unwinding and leak kernel task stack contents.
Metrics
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | <= 4.18.11 |
| Canonical | Ubuntu Linux | 12.04 |
| Canonical | Ubuntu Linux | 14.04 |
| Canonical | Ubuntu Linux | 16.04 |
| Canonical | Ubuntu Linux | 18.04 |
| Canonical | Ubuntu Linux | 18.10 |
| Redhat | Enterprise Linux Desktop | 7.0 |
| Redhat | Enterprise Linux Server | 7.0 |
| Redhat | Enterprise Linux Server | 7.6 |
| Redhat | Enterprise Linux Server Aus | 7.6 |
| Redhat | Enterprise Linux Server Eus | 7.6 |
| Redhat | Enterprise Linux Server Tus | 7.6 |
| Redhat | Enterprise Linux Workstation | 7.0 |
| Debian | Debian Linux | 8.0 |
References
- http://www.securityfocus.com/bid/105525Third Party Advisory, VDB Entry
- https://access.redhat.com/errata/RHSA-2019:0512Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:0514Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2019/03/msg00017.htmlMailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2019/03/msg00034.htmlMailing List, Third Party Advisory
- https://marc.info/?l=linux-fsdevel&m=153806242024956&w=2Patch, Third Party Advisory
- https://usn.ubuntu.com/3821-1/Third Party Advisory
- https://usn.ubuntu.com/3821-2/Third Party Advisory
- https://usn.ubuntu.com/3832-1/Third Party Advisory
- https://usn.ubuntu.com/3835-1/Third Party Advisory
- https://usn.ubuntu.com/3871-1/Third Party Advisory
- https://usn.ubuntu.com/3871-3/Third Party Advisory
- https://usn.ubuntu.com/3871-4/Third Party Advisory
- https://usn.ubuntu.com/3871-5/Third Party Advisory
- https://usn.ubuntu.com/3880-1/Third Party Advisory
- https://usn.ubuntu.com/3880-2/Third Party Advisory
- http://www.securityfocus.com/bid/105525Third Party Advisory, VDB Entry
- https://access.redhat.com/errata/RHSA-2019:0512Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:0514Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2019/03/msg00017.htmlMailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2019/03/msg00034.htmlMailing List, Third Party Advisory
- https://marc.info/?l=linux-fsdevel&m=153806242024956&w=2Patch, Third Party Advisory
- https://usn.ubuntu.com/3821-1/Third Party Advisory
- https://usn.ubuntu.com/3821-2/Third Party Advisory
- https://usn.ubuntu.com/3832-1/Third Party Advisory
- https://usn.ubuntu.com/3835-1/Third Party Advisory
- https://usn.ubuntu.com/3871-1/Third Party Advisory
- https://usn.ubuntu.com/3871-3/Third Party Advisory
- https://usn.ubuntu.com/3871-4/Third Party Advisory
- https://usn.ubuntu.com/3871-5/Third Party Advisory
- https://usn.ubuntu.com/3880-1/Third Party Advisory
- https://usn.ubuntu.com/3880-2/Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2018-17972?
An issue was discovered in the proc_pid_stack function in fs/proc/base.c in the Linux kernel through 4.18.11. It does not ensure that only root may inspect the kernel stack of an arbitrary task, allowing a local attacker to exploit racy stack unwinding and leak kernel task stack contents.
How severe is CVE-2018-17972?
Severity scoring for CVE-2018-17972 is pending analysis. The EPSS model estimates a 0.35% probability of exploitation in the next 30 days.
How do I fix CVE-2018-17972?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
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