Is there a public exploit for CVE-2026-99237?

No public exploit for CVE-2026-99237 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.

How severe is CVE-2026-99237?

CVE-2026-99237 scores CVSS 7.8 (v3.1), rated high.

What does CVE-2026-99237 affect?

CVE-2026-99237 affects Linux Linux.

7.8 High

In the Linux kernel, the following vulnerability has been resolved: tracing: Hold tracetypeslock when resetting last boot data from readers…

CVE-2026-99237

In the Linux kernel, the following vulnerability has been resolved: tracing: Hold tracetypeslock when resetting last boot data from readers updatelastdataifempty() is called from tracingopen() with OTRUNC, tracingreadpipe() and tracingbuffersread() without tracetypeslock. Two readers can both pass the LASTBOOT test and free moduledelta twice, and a module notifier can update moduledelta while it is being freed. Take tracetypeslock in those paths and keep the callers that already hold it on an unlocked variant.

Assessment

CVSS: 7.8 (v3.1)
Severity: High
Known exploited: Not listed in CISA KEV
Exploit availability: Nothing found in Exploit-DB, Metasploit, Nuclei or public PoC repositories
Published: 2 November 2026
Last updated: 2 November 2026
Affected: Linux · Linux
Assigner: Linux

CVSS vectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

At the source

EUVD (ENISA)

References

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