Is there a public exploit for CVE-2026-99114?

No public exploit for CVE-2026-99114 was found in Exploit-DB, Metasploit, Nuclei templates or public proof-of-concept repositories. That is an absence of evidence rather than proof that none exists.

— Unscored

In the Linux kernel, the following vulnerability has been resolved: ksmbd: initialize FileSystemControlFlags in FSCONTROLINFORMATION…

CVE-2026-99114

In the Linux kernel, the following vulnerability has been resolved: ksmbd: initialize FileSystemControlFlags in FSCONTROLINFORMATION smb2getinfofilesystem() reports 48 bytes for FSCONTROLINFORMATION, that is the whole of struct smb2fscontrolinfo, but never assigns FileSystemControlFlags. Those four bytes go to the client as they are found in the response buffer. The buffer is zeroed on allocation, so a standalone request leaks nothing. A compound request can leak: the offset of the next response is advanced by the length pinned for the previous one, so a reply that was written into the buffer and then dropped in favour of the short error response of smb2seterrrsp() stays there, and the next reply is laid over it with only the header cleared. ksmbd does not implement quota tracking, so report no control flags.

Assessment

CVSS: Not yet scored
Severity: Unscored
Known exploited: Not listed in CISA KEV
Exploit availability: Nothing found in Exploit-DB, Metasploit, Nuclei or public PoC repositories
Published: 28 October 2026
Last updated: 30 October 2026
Assigner: 416baaa9-dc9f-4396-8d5f-8c081fb06d67

At the source

References

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