CVE-2026-98172
smb: client: fix smbd_connection leak on cifs_get_tcp_session() error
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Fix
- Fixed in 6.1.189, 6.6.158, 6.12.112, 6.18.54, 7.2.8
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
Summary
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.
Timeline
- CVE published
- Record last updated
Affected versions
- Linux Linux
Version range not reported
- Linux Linux
4.16
- KernelLinux
From 4.16.0 · fixed in 6.1.189; From 6.2.0 · fixed in 6.6.158; From 6.7.0 · fixed in 6.12.112; From 6.13.0 · fixed in 6.18.54; From 6.19.0 · fixed in 7.2.8
References 8
git.kernel.org
- stable/c/c295f6505aec085d73e8dcea9f648c8af1b9da8c
- stable/c/45a97df1b7fe6c1ca5493f8fb5284203991aeeb9
- stable/c/3164402c58940ff58a3cecdb026405f07b0253af
- stable/c/e3344bb0ff5ec8a276f42239e140f5442841ef23
- stable/c/5c908e49d349266dff0c86dda6a05df0ff19b824
- stable/c/928edc4bd6a617caabeb575fc13c254d9df623c4
- stable/c/b26a3fcf2f1c2cadba400290b639f01395db8fc8
- stable/c/e75c96157d45e498970158c8f7373d90102e33b9