Description
A use-after-free vulnerability was found in the 9P protocol implementation of NFS-Ganesha. The server does not protect the lifetime of file identifier (FID) objects when processing concurrent requests. An attacker can race a write operation against a close operation on the same FID, causing one worker thread to free the FID and its associated data while another thread continues to use it. This allows attacker-controlled data to be written into freed heap memory, which can result in a crash or potentially remote code execution. The 9P protocol handler does not implement authentication, so the vulnerability is reachable without credentials by any client with network access to the 9P listener.
Published: n/a
Score: 8.1 High
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
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Remediation

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History

Tue, 06 Oct 2026 12:15:00 +0000

Type Values Removed Values Added
Description A use-after-free vulnerability was found in the 9P protocol implementation of NFS-Ganesha. The server does not protect the lifetime of file identifier (FID) objects when processing concurrent requests. An attacker can race a write operation against a close operation on the same FID, causing one worker thread to free the FID and its associated data while another thread continues to use it. This allows attacker-controlled data to be written into freed heap memory, which can result in a crash or potentially remote code execution. The 9P protocol handler does not implement authentication, so the vulnerability is reachable without credentials by any client with network access to the 9P listener.
Title nfs-ganesha: nfs-ganesha: 9P TWRITE/TCLUNK race condition use-after-free
Weaknesses CWE-416
References
Metrics threat_severity

None

 cvssV3_1

{'score': 8.1, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H'}

threat_severity

Important

Subscriptions

No data.

cve-icon MITRE

No data.

cve-icon Vulnrichment

No data.

cve-icon NVD

No data.

cve-icon Redhat

Severity : Important

Publid Date: 2026-10-05T00:00:00Z

Links: CVE-2026-105517 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-10-06T14:45:18Z

Weaknesses