CVE record · CVE-2026-98393

net: ipv4: Fix UDP length overflow with PMTU discover and big MTU

No CVSS scoreEPSS 0.0020 · 10th percentile

Published by the CVE Program (CNA: Linux) at 14 Oct 2026, 13:25 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

Affected products, as the CNA wrote them
Vendor	Product	Versions
Linux	Linux	affected daba287b299ec7a2c61ae3a714920e90e8396ad5 to before 83fedc4741210f75be8ca5b487985a242bf6f18d git affected daba287b299ec7a2c61ae3a714920e90e8396ad5 to before 81f540827d243b8dad76c1f44e70ea31719f393c git affected daba287b299ec7a2c61ae3a714920e90e8396ad5 to before b83641e0ab8b20eefcc4cdc5a059f897375291a2 git Other versions: unaffected
Linux	Linux	affected 3.13 unaffected before 3.13 semver unaffected 6.18.53 to 6.18., inclusive semver unaffected 7.2.7 to 7.2., inclusive semver unaffected 7.3 to *, inclusive original_commit_for_fix Other versions: affected

Identifiers: CVE-2026-98393
CNA: Linux
Tags: Linux kernel
Published: 14 Oct 2026
Updated: 19 Oct 2026

Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

Severity and exploitation

No source has published a CVSS score for this record yet.

CISA KEV Not listed.
EPSS 0.0020, the 10th percentile, on 8 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

This record came from the full history of the CVE Program, published 14 Oct 2026. New records show when each source confirmed them.

Sources

References from the CNA

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.