CSIRTS // UNIFIED SECURITY ADVISORY FEEDSYS ● ONLINE · POWERED BY INTELFUSIONS.COM

← Back to feed

CVE-2026-46320: tap: free page on error paths in tap_get_user_xdp()

highCVSS 7.1CVE-2026-46320

CSIRTS triage

vendor: Linuxproduct: tapOther
What
The tap_get_user_xdp() function frees a page on error paths.
Who is affected
Deployments using the tap networking feature in Linux.
Urgency
Remediation is high urgency due to the high severity and lack of exploitation status.
Action
Update to the latest version of the Linux kernel that includes the fix.

AI-assisted analysis generated from the source advisory — verify against the original.

⚡ Watch tap

Get an email when a new tap advisory drops — max one per day, one-click unsubscribe.

Details

Source
Microsoft Security Response Center (INTL · vendor-psirt · site)
Severity
high — CVSS 7.1
Published
2026-06-09
Exploitation
Not in CISA KEV at last sync

Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-46320

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Referenced CVEs

CVECSIRTS overviewExternal
CVE-2026-46320coverage & exploitation statusNVD · CVE.org

Same CVEs, other sources

How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.

Recent advisories for tap

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

More from Microsoft Security Response Center