In the Linux kernel, the following vulnerability has been resolved: ksmbd: close accepted socket when per-IP limit rejects connection When the… (CVE-2025-68246)
A vulnerability in the Linux kernel's ksmbd component allows a remote attacker to cause a denial of service by exhausting socket resources. When the per-IP connection limit is exceeded, the kernel fails to close the newly accepted socket, leaking one socket per rejected connection attempt. This issue has been resolved by ensuring the socket is properly closed upon rejection.
AI Analysis
Technical Summary
The Linux kernel's ksmbd service had a flaw in ksmbd_kthread_fn() where exceeding the per-IP connection limit caused the code to set ret = -EAGAIN and continue accepting connections without closing the newly accepted socket. This socket leak per rejected connection attempt enables a trivial remote denial of service by exhausting socket resources. The fix involves releasing the client socket before continuing the accept loop. This vulnerability was identified by ZeroPath and is tracked as CVE-2025-68246.
Potential Impact
This vulnerability allows a remote attacker to cause a denial of service (DoS) by exhausting socket resources on the affected system. There is no impact on confidentiality or integrity, only availability is affected.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, monitor for unusual connection attempts that may trigger socket exhaustion. No vendor advisory or patch links are provided in the current data.
In the Linux kernel, the following vulnerability has been resolved: ksmbd: close accepted socket when per-IP limit rejects connection When the… (CVE-2025-68246)
Description
A vulnerability in the Linux kernel's ksmbd component allows a remote attacker to cause a denial of service by exhausting socket resources. When the per-IP connection limit is exceeded, the kernel fails to close the newly accepted socket, leaking one socket per rejected connection attempt. This issue has been resolved by ensuring the socket is properly closed upon rejection.
CVSS v3.1
Score 7.5high
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The Linux kernel's ksmbd service had a flaw in ksmbd_kthread_fn() where exceeding the per-IP connection limit caused the code to set ret = -EAGAIN and continue accepting connections without closing the newly accepted socket. This socket leak per rejected connection attempt enables a trivial remote denial of service by exhausting socket resources. The fix involves releasing the client socket before continuing the accept loop. This vulnerability was identified by ZeroPath and is tracked as CVE-2025-68246.
Potential Impact
This vulnerability allows a remote attacker to cause a denial of service (DoS) by exhausting socket resources on the affected system. There is no impact on confidentiality or integrity, only availability is affected.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, monitor for unusual connection attempts that may trigger socket exhaustion. No vendor advisory or patch links are provided in the current data.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-782g-7r6x-6926
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2025-68246"]
- Database Specific Severity
- HIGH
- Cvss Version
- 3.1
Threat ID: 6a6b72d39c2644c7f8478643
Added to database: 07/30/2026, 15:50:43 UTC
Last enriched: 07/30/2026, 18:23:18 UTC
Last updated: 09/10/2026, 19:26:53 UTC
Views: 10
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