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5.9

Linux kernel default stack guard page can be bypassed

CVE-2017-1000377 · published 9 years ago
Summary

The Linux kernel’s built‑in protection that keeps programs from overrunning memory uses a guard page that is too small, allowing an attacker to skip over it. This could let malicious code corrupt memory and potentially take control of the system. Updating to a kernel version with a larger guard page or applying the vendor’s security patch resolves the risk.

What to do

The CVE record does not list a fixed version. Check the vendor's site or the advisory links below - a fix may already be released.

Affected software
VendorProductAffected versions
linux linux_kernel All versions
cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*
Original advisory text
An issue was discovered in the size of the default stack guard page on PAX Linux (originally from GRSecurity but shipped by other Linux vendors), specifically the default stack guard page is not su...
An issue was discovered in the size of the default stack guard page on PAX Linux (originally from GRSecurity but shipped by other Linux vendors), specifically the default stack guard page is not sufficiently large and can be "jumped" over (the stack guard page is bypassed), this affects PAX Linux Kernel versions as of June 19, 2017 (specific version information is not available at this time).
References
Fix within
Internet-facing 60 days
Internal At next upgrade
  • Not known to be exploited
  • Needs hands-on effort to exploit (estimated)
  • Gives an attacker partial control (estimated)
Severity
5.9 Medium
Exploitation
<1% chance of attack within 30 days
Type
CWE-119Buffer Overflow
Timeline
Published19 Jun 2017
Updated4 Nov 2026
First seen29 Sep 2026
Sources
CVE-2017-1000377 · NVD
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