CVE-2017-1000371

Name: CVE-2017-1000371
Creator: NVD / NIST
Published: 2017-06-19T16:29:00.42+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.8/10EPSS 2.43%

Last modified Jun 17, 2026

CVE-2017-1000371 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. The offset2lib patch as used by the Linux Kernel contains a vulnerability, if RLIMIT_STACK is set to RLIM_INFINITY and 1 Gigabyte of memory is allocated (the maximum under the 1/4 restriction) then the stack will be grown down to 0x80000000, and as the PIE binary is mapped above 0x80000000 the minimum distance between the end of the PIE binary's read-write segment and the start of the stack becomes small enough that the stack guard page can be jumped over by an attacker. This affects Linux Kernel version 4.11.5. EPSS estimates a 2.43% chance of exploitation in the next 30 days.

Description

The offset2lib patch as used by the Linux Kernel contains a vulnerability, if RLIMIT_STACK is set to RLIM_INFINITY and 1 Gigabyte of memory is allocated (the maximum under the 1/4 restriction) then the stack will be grown down to 0x80000000, and as the PIE binary is mapped above 0x80000000 the minimum distance between the end of the PIE binary's read-write segment and the start of the stack becomes small enough that the stack guard page can be jumped over by an attacker. This affects Linux Kernel version 4.11.5. This is a different issue than CVE-2017-1000370 and CVE-2017-1000365. This issue appears to be limited to i386 based systems.

Metrics

CVSS 3.1

7.8/10

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

2.43%

82.1th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions
Linux	Linux Kernel	>= 4.1, < 4.1.43
Linux	Linux Kernel	>= 4.2, < 4.4.78
Linux	Linux Kernel	>= 4.5, < 4.9.39
Linux	Linux Kernel	>= 4.10, < 4.11.12
Linux	Linux Kernel	>= 4.12, < 4.12.3

References

http://www.debian.org/security/2017/dsa-3981Third Party Advisory
http://www.securityfocus.com/bid/99131Third Party Advisory, VDB Entry
https://access.redhat.com/security/cve/CVE-2017-1000371Third Party Advisory, VDB Entry
https://www.exploit-db.com/exploits/42273/Third Party Advisory, VDB Entry
https://www.exploit-db.com/exploits/42276/Third Party Advisory, VDB Entry
https://www.qualys.com/2017/06/19/stack-clash/stack-clash.txtThird Party Advisory
http://www.debian.org/security/2017/dsa-3981Third Party Advisory
http://www.securityfocus.com/bid/99131Third Party Advisory, VDB Entry
https://access.redhat.com/security/cve/CVE-2017-1000371Third Party Advisory, VDB Entry
https://www.exploit-db.com/exploits/42273/Third Party Advisory, VDB Entry
https://www.exploit-db.com/exploits/42276/Third Party Advisory, VDB Entry
https://www.qualys.com/2017/06/19/stack-clash/stack-clash.txtThird Party Advisory

Timeline

Published: Jun 19, 2017
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2017-1000371?

How severe is CVE-2017-1000371?

CVE-2017-1000371 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 2.43% probability of exploitation in the next 30 days.

How do I fix CVE-2017-1000371?

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.

Are you affected by CVE-2017-1000371?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST