Threat Intelligence / CVE / CVE-2026-49412

CVE-2026-49412

EPSS 0.1% · Priority 0.1/10 · Published 2026-06-27

As of 2026-06-27, CVE-2026-49412 is a vulnerability. EPSS exploitation probability 0.1%. Threadlinqs Intelligence tracks 0 threats exploiting it.

Last updated: 2026-06-27

The kernel handler for IPV6_MSFILTER dropped a serializing lock in order to copy the source-filter list from userspace, then reacquired the lock. During this window another thread could free the multicast filter structure, leaving the handler with a stale pointer to freed memory. An unprivileged local user can exploit this use-after-free to escalate privileges.

Weaknesses (CWE)

CWE-416

References

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Enriched from CVE.org, NVD (this product uses the NVD API but is not endorsed or certified by the NVD), FIRST EPSS, CISA KEV, and GitHub Security Advisories.