CVE-2017-1000371

High

Published: 19/06/2017(UTC)Translated: 15/06/2026(UTC)NVD NIST

Summary

The offset2lib patch used by the Linux Kernel contains a vulnerability that occurs when RLIMIT_STACK is set to RLIM_INFINITY and 1 Gigabyte of memory is allocated. As a result, the stack may grow to 0x80000000, allowing an attacker to jump over the stack guard page.

Risk Assessment

This vulnerability could lead to privilege escalation on i386-based systems, posing a serious security threat to the organization.

Recommendation

It is recommended to update the Linux kernel to a version that is not vulnerable to this issue to minimize the risk of attacks.

Other vulnerabilities in Linux Kernel version 4.11.5

CVE-2017-1000379High
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.

Original NVD description (English source)

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.