CVE-2026-49412
No CVSS score published · EPSS: 0.0013 (3.2 percentile)
Source data as of:
At a glance
- Severity
- No CVSS score published
- CVSS
- No CVSS score in the NVD record
- EPSS
- 0.0013 (3.2 percentile) · FIRST.org
- CISA KEV
- No
- Type
- Use After Free · NVD CWE
- Published
- 2026-06-27 · Modified: 2026-06-27
- References
- Jump to references (1)
CVSS / EPSS / KEV
Source — CVSS: NVD · EPSS: FIRST.org · KEV: CISA. Data & Sources
Description
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.
References
Reference URLs as listed by NVD, grouped by a mechanical match on the link's host/pattern. Labels describe the link type only.