CVE-2026-17504: CWE-191 Integer Underflow (Wrap or Wraparound) in IBM PowerVM Hypervisor
IBM PowerVM Hypervisor FW1120.00 through FW1120.01, FW1110.00 through FW1110.31, FW1060.00 through FW1060.81, and FW950.00 through FW950.H3 is affected by a vulnerability in the partition firmware runtime. An attacker with root access to a partition can send a specially crafted request to the partition firmware runtime, causing it to crash with possible memory corruption.
AI Analysis
Technical Summary
IBM PowerVM Hypervisor versions FW1120.00 through FW1120.01, FW1110.00 through FW1110.31, FW1060.00 through FW1060.81, and FW950.00 through FW950.H3 contain an integer underflow (CWE-191) vulnerability in the partition firmware runtime. A root-level attacker within a partition can exploit this by sending a specially crafted request, leading to a crash and possible memory corruption in the firmware runtime.
Potential Impact
An attacker with root privileges on a partition can cause the partition firmware runtime to crash, potentially leading to memory corruption. This may disrupt the operation of the affected partition but does not directly impact confidentiality. The integrity impact is low, and availability impact is high due to the crash.
Mitigation Recommendations
No patch or official fix information is provided in the available data. Patch status is not yet confirmed — check the IBM vendor advisory for current remediation guidance. Until a fix is available, limit root access to trusted users and monitor for unusual partition firmware crashes.
CVE-2026-17504: CWE-191 Integer Underflow (Wrap or Wraparound) in IBM PowerVM Hypervisor
Description
IBM PowerVM Hypervisor FW1120.00 through FW1120.01, FW1110.00 through FW1110.31, FW1060.00 through FW1060.81, and FW950.00 through FW950.H3 is affected by a vulnerability in the partition firmware runtime. An attacker with root access to a partition can send a specially crafted request to the partition firmware runtime, causing it to crash with possible memory corruption.
CVSS v3.1
Score 5.1medium
Affected software
IBM
PowerVM Hypervisor
cpe:2.3:a:ibm:powervm_hypervisor:fw1120.00:*:*:*:*:*:*:*cpe:2.3:a:ibm:powervm_hypervisor:fw1120.00.0:*:*:*:*:*:*:*cpe:2.3:a:ibm:powervm_hypervisor:fw1120.01:*:*:*:*:*:*:*cpe:2.3:a:ibm:powervm_hypervisor:fw1120.01.0:*:*:*:*:*:*:*cpe:2.3:a:ibm:powervm_hypervisor:fw1110.00:*:*:*:*:*:*:*cpe:2.3:a:ibm:powervm_hypervisor:fw1110.00.0:*:*:*:*:*:*:*Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
IBM PowerVM Hypervisor versions FW1120.00 through FW1120.01, FW1110.00 through FW1110.31, FW1060.00 through FW1060.81, and FW950.00 through FW950.H3 contain an integer underflow (CWE-191) vulnerability in the partition firmware runtime. A root-level attacker within a partition can exploit this by sending a specially crafted request, leading to a crash and possible memory corruption in the firmware runtime.
Potential Impact
An attacker with root privileges on a partition can cause the partition firmware runtime to crash, potentially leading to memory corruption. This may disrupt the operation of the affected partition but does not directly impact confidentiality. The integrity impact is low, and availability impact is high due to the crash.
Mitigation Recommendations
No patch or official fix information is provided in the available data. Patch status is not yet confirmed — check the IBM vendor advisory for current remediation guidance. Until a fix is available, limit root access to trusted users and monitor for unusual partition firmware crashes.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- ibm
- Date Reserved
- 2026-07-26T19:28:06.549Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6ab53135f7a7c541066a02fe
Added to database: 09/24/2026, 14:18:29 UTC
Last enriched: 09/24/2026, 14:33:09 UTC
Last updated: 09/25/2026, 02:48:29 UTC
Views: 9
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