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CVE-2026-98172

Unknown

Last modified

CVE-2026-98172 is a vulnerability of currently unknown severity. In the Linux kernel, the following vulnerability has been resolved: smb: client: fix smbd_connection leak on cifs_get_tcp_session() error When an RDMA connection is successfully established via smbd_get_connection() but cifs_get_tcp_session() later fails (e.g. kthread_create() returns an error), the error path frees tcp_ses without first destroying the smbd_connection. Fix this by calling smbd_destroy() in the out_err cleanup path before kfree(tcp_ses). smbd_destroy() safely handles the case where smbd_conn is NULL, so it can be called unconditionally..

Description

In the Linux kernel, the following vulnerability has been resolved: smb: client: fix smbd_connection leak on cifs_get_tcp_session() error When an RDMA connection is successfully established via smbd_get_connection() but cifs_get_tcp_session() later fails (e.g. kthread_create() returns an error), the error path frees tcp_ses without first destroying the smbd_connection. Fix this by calling smbd_destroy() in the out_err cleanup path before kfree(tcp_ses). smbd_destroy() safely handles the case where smbd_conn is NULL, so it can be called unconditionally.

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
LinuxLinux>= 2f8946464b11822169b9f10c7cf58a2440b51d54, < 3164402c58940ff58a3cecdb026405f07b0253af; >= 2f8946464b11822169b9f10c7cf58a2440b51d54, < e3344bb0ff5ec8a276f42239e140f5442841ef23; >= 2f8946464b11822169b9f10c7cf58a2440b51d54, < 5c908e49d349266dff0c86dda6a05df0ff19b824; >= 2f8946464b11822169b9f10c7cf58a2440b51d54, < 928edc4bd6a617caabeb575fc13c254d9df623c4; >= 2f8946464b11822169b9f10c7cf58a2440b51d54, < b26a3fcf2f1c2cadba400290b639f01395db8fc8; >= 2f8946464b11822169b9f10c7cf58a2440b51d54, < e75c96157d45e498970158c8f7373d90102e33b9
LinuxLinux4.16

References

Timeline

Published
Last Modified
Status
Received

Frequently Asked Questions

What is CVE-2026-98172?
In the Linux kernel, the following vulnerability has been resolved: smb: client: fix smbd_connection leak on cifs_get_tcp_session() error When an RDMA connection is successfully established via smbd_get_connection() but cifs_get_tcp_session() later fails (e.g. kthread_create() returns an error), the error path frees tcp_ses without first destroying the smbd_connection. Fix this by calling smbd_destroy() in the out_err cleanup path before kfree(tcp_ses). smbd_destroy() safely handles the case where smbd_conn is NULL, so it can be called unconditionally.
How severe is CVE-2026-98172?
Severity scoring for CVE-2026-98172 is pending analysis.
How do I fix CVE-2026-98172?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST