Is there a public exploit for CVE-2026-99177?

No public exploit for CVE-2026-99177 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-2026-99177?

CVE-2026-99177 scores CVSS 7.8 (v3.1), rated high. EPSS puts the chance of exploitation in the next 30 days at 0.16%.

7.8 High

In the Linux kernel, the following vulnerability has been resolved: KVM: SEV: Fix page dirtying in sevgmempostpopulate() setpagedirty()…

CVE-2026-99177

In the Linux kernel, the following vulnerability has been resolved: KVM: SEV: Fix page dirtying in sevgmempostpopulate() setpagedirty() requires that the caller holds some kind of lock to ensure that the page's mapping does not concurrently go away. That is not the case for a random page we got from getuserpagesfast(), so use setpagedirtylock(). [sean: tag for stable]

Assessment

CVSS: 7.8 (v3.1)
Severity: High
EPSS: 0.16% chance of exploitation in the next 30 days
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: 31 October 2026
Affected: 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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