CVE-2026-49412 - Use-after-free bug in the IPV6_MSFILTER socket option handler

CVE-2026-49412 - Use-after-free bug in the IPV6_MSFILTER socket option handler

https://cvefeed.io/rssfeed/latest.atom / Sat, 06/27/2026 - 13:02
CVE ID :CVE-2026-49412
Published : June 27, 2026, 9:02 a.m. | 1 hour, 39 minutes ago
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.
Severity: 0.0 | NA
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