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2.1

IBM AIX 6.1/7.1 Fibre Channel driver can cause system hang

CVE-2011-3982 · published 15 years ago
Summary

The driver that controls QLogic Fibre Channel adapters on IBM AIX 6.1 and 7.1 can get stuck when it processes a large amount of data, making the entire system stop responding. A local user who runs a program that forces heavy data transfers can trigger this condition. Apply the IBM AIX driver update that fixes the problem and limit who can run such high‑traffic programs.

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
ibm aix 6.1
7.1
cpe:2.3:o:ibm:aix:6.1:*:*:*:*:*:*:*
Original advisory text
The Fibre Channel driver for QLogic adapters in IBM AIX 6.1 and 7.1 does not properly handle DMA resource limitations, which allows local users to cause a denial of service (system hang) via vector...
The Fibre Channel driver for QLogic adapters in IBM AIX 6.1 and 7.1 does not properly handle DMA resource limitations, which allows local users to cause a denial of service (system hang) via vectors that generate a large amount of DMA I/O, related to a deadlock in timer processing across CPUs.
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
2.1 Low
Exploitation
<1% chance of attack within 30 days
Type
CWE-399Resource Management Errors
Timeline
Published5 Oct 2011
Updated31 Oct 2026
First seen29 Sep 2026
Sources
CVE-2011-3982 · NVD
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