Microsoft · ksmbd: don't hold ci->m_lock while waiting for a lease break ack
Affects MicrosoftSource GCVE Database
Not known to be exploited · fixed in 868c9038ffd4af39766d087f68c8f543a3f66635 : update Microsoft when convenient.
Data as of 28 Oct 2026, 08:57 UTC
Rated by Threat Radar · CVSS not yet scored by NVD
- Patch
- Available – fixed in 868c9038ffd4af39766d087f68c8f543a3f66635, 27a9bc968d4ae809a3f5ca2f2b136856ee613cb4, 6.7
Exploitation evidence
Disclosed: evidence found.
CVE published 23 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 Linux to 868c9038ffd4af39766d087f68c8f543a3f66635, 27a9bc968d4ae809a3f5ca2f2b136856ee613cb4 or 6.7.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| LinuxLinux | Affected
| Fixed in
|
| LinuxLinux | Affected
| Fixed in– |
Description
This vulnerability involves the ksmbd component where a lock (ci->m_lock) is held while waiting for a lease break acknowledgment. The issue affects Microsoft products versions 3.0 and 4.0. No CVSS score or detailed impact information is provided, and no known exploits are reported in the wild.