CVE-2026-97362: Loop with Unreachable Exit Condition ('Infinite Loop') in rejetto hfs2
HFS2 version 2.4.0 and earlier contains a denial of service vulnerability that allows unauthenticated attackers to cause a complete and persistent loss of availability by sending a single crafted request. Attackers can trigger a hung serving thread that enters a busy loop, rendering the entire file server unresponsive to all clients without self-recovery until an operator manually restarts the service.
AI Analysis
Technical Summary
The vulnerability in rejetto hfs2 (versions >=2.0.0 <=2.4.0) involves a loop with an unreachable exit condition that leads to an infinite loop. This causes a denial of service by hanging a serving thread, which results in the entire file server becoming unresponsive to all clients. The issue can be triggered by an unauthenticated attacker with a single crafted request and requires manual intervention to recover the service.
Potential Impact
An attacker can cause a complete and persistent loss of availability of the hfs2 file server by triggering a busy loop in a serving thread. This denial of service affects all clients connected to the server and does not self-recover, requiring manual restart of the service.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, operators should monitor for signs of service unresponsiveness and be prepared to manually restart the service if triggered.
CVE-2026-97362: Loop with Unreachable Exit Condition ('Infinite Loop') in rejetto hfs2
Description
HFS2 version 2.4.0 and earlier contains a denial of service vulnerability that allows unauthenticated attackers to cause a complete and persistent loss of availability by sending a single crafted request. Attackers can trigger a hung serving thread that enters a busy loop, rendering the entire file server unresponsive to all clients without self-recovery until an operator manually restarts the service.
CVSS v4.0
Score 8.7high
Affected software
rejetto
hfs2
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AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability in rejetto hfs2 (versions >=2.0.0 <=2.4.0) involves a loop with an unreachable exit condition that leads to an infinite loop. This causes a denial of service by hanging a serving thread, which results in the entire file server becoming unresponsive to all clients. The issue can be triggered by an unauthenticated attacker with a single crafted request and requires manual intervention to recover the service.
Potential Impact
An attacker can cause a complete and persistent loss of availability of the hfs2 file server by triggering a busy loop in a serving thread. This denial of service affects all clients connected to the server and does not self-recover, requiring manual restart of the service.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, operators should monitor for signs of service unresponsiveness and be prepared to manually restart the service if triggered.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulnCheck
- Date Reserved
- 2026-09-24T13:33:30.061Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6ab53bc5f7a7c541067483f3
Added to database: 09/24/2026, 15:03:33 UTC
Last enriched: 09/24/2026, 15:17:40 UTC
Last updated: 09/25/2026, 01:56:00 UTC
Views: 11
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