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CVE-2026-46039

Linux Kernel integer overflow

9.8 CRITICALEPSS 0.65%
  1. Published27 May 2026

Description

In the Linux kernel, the following vulnerability has been resolved: rxgk: Fix potential integer overflow in length check Fix potential integer overflow in rxgk_extract_token() when checking the length of the ticket. Rather than rounding up the value to be tested (which might overflow), round down the size of the available data.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

Linux Kernel≥ 6.16.9 < 6.17 · ≥ 6.17.1 < 6.18.27 · ≥ 6.19 < 7.0.4 · 6.17

Remediation

Fixed in
Linux Kernel≥ 6.17

References

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Frequently asked

Is CVE-2026-46039 being actively exploited?

CVE-2026-46039 is not in the CISA KEV catalog. Its EPSS exploit probability is 0.65%.

How severe is CVE-2026-46039?

CVE-2026-46039 has a CVSS 3.1 base score of 9.8, rated critical. EPSS estimates a 0.65% probability of exploitation.

Which products are affected by CVE-2026-46039?

Affected products include Linux Kernel.

How do I fix CVE-2026-46039?

Upgrade affected software to a fixed version, for example Linux Kernel 6.17 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2026-46039 against the real software inventory on every managed device, as each hourly inventory arrives. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.