CVE-2026-98172: Linux kernel · smb: client: fix smbd_connection leak on cifs_get_tcp_session() error
Affects Linux kernelSource CVE Database V5
Not known to be exploited · fixed in e3344bb0ff5ec8a276f42239e140f5442841ef23 : update Linux kernel when convenient.
Data as of 26 Oct 2026, 14:05 UTC
Rated Low by Threat Radar's AI analysis · CVSS not yet scored by NVD
- EPSS
- 0.1% chance of exploitation in 30 days – higher than 6% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in e3344bb0ff5ec8a276f42239e140f5442841ef23, e75c96157d45e498970158c8f7373d90102e33b9, b26a3fcf2f1c2cadba400290b639f01395db8fc8 +3
Exploitation evidence
Disclosed: evidence found.
CVE published 6 Oct 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.
What to do
Upgrade to a fixed release listed under Affected software.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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AI-suggested
A fix is available in the Linux kernel versions identified by the provided commit hashes. Users should update to a fixed kernel version containing these commits to remediate the vulnerability. Since this is a kernel-level resource leak, no additional mitigations are specified.
Description
A resource leak vulnerability in the Linux kernel SMB client was fixed. The flaw involved a smbd_connection leak when cifs_get_tcp_session() failed after an RDMA connection was established. The error path did not properly destroy the smbd_connection before freeing the tcp session, potentially causing resource exhaustion.
References
- git.kernel.org/stable/c/3164402c58940ff58a3cecdb026405f07b0253af (opens in a new tab)
- git.kernel.org/stable/c/e3344bb0ff5ec8a276f42239e140f5442841ef23 (opens in a new tab)
- git.kernel.org/stable/c/5c908e49d349266dff0c86dda6a05df0ff19b824 (opens in a new tab)
- git.kernel.org/stable/c/928edc4bd6a617caabeb575fc13c254d9df623c4 (opens in a new tab)
- git.kernel.org/stable/c/b26a3fcf2f1c2cadba400290b639f01395db8fc8 (opens in a new tab)
- git.kernel.org/stable/c/e75c96157d45e498970158c8f7373d90102e33b9 (opens in a new tab)