CVE-2026-31735
Linux kernel unmap overshoot in iommu path; unlikely to be exploitable.
Is CVE-2026-31735 being exploited?
Not confirmed. CVE-2026-31735 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.12% probability of exploitation in the next 30 days.
How severe is CVE-2026-31735?
CVE-2026-31735 is rated High with a CVSS score of 8.8. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-31735?
Yes. A fix has been recorded for CVE-2026-31735. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-31735 affect?
CVE-2026-31735 affects Linux Kernel. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-31735?
Patch kernel to latest release
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
No practical exploit path; overshoot could cause extra invalidation, but unlikely to be triggered.
Patch when possible
- affected>= 7c53f4238aa8bfb476e177263133ead2eeb8d55d and < 50ecd96a28f712f8b682c0441f4cb9b086d28816
- affected>= 7c53f4238aa8bfb476e177263133ead2eeb8d55d and < ee6e69d032550687a3422504bfca3f834c7b5061
- affected6.19
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.