Is there a public exploit for CVE-2026-99273?

No public exploit for CVE-2026-99273 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.

What does CVE-2026-99273 affect?

CVE-2026-99273 affects Linux Linux.

— Unscored

In the Linux kernel, the following vulnerability has been resolved: ksmbd: reserve space for the UTF-16 terminator in stream info…

CVE-2026-99273

In the Linux kernel, the following vulnerability has been resolved: ksmbd: reserve space for the UTF-16 terminator in stream info smbstrtoUTF16() always writes a terminating zero UTF-16 unit after the converted characters, but getfilestreaminfo() budgets only sizeof(struct smb2filestreaminfo) + streamlen 2 for a stream entry and sizeof(struct smb2filestreaminfo) + 7 2 for the trailing "::$DATA" entry. When an entry exactly fills the 448-byte small response buffer, the terminator is written two bytes past the allocation. Reserve one extra UTF-16 unit in both budget checks. The terminator is not part of the wire format, so the reported lengths are unchanged.

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: 7 November 2026
Last updated: 7 November 2026
Affected: Linux · Linux
Assigner: Linux

At the source

EUVD (ENISA)

References

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