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CVE-2025-38550 is a lifetime-management flaw in the Linux kernel IPv6 multicast/MLD implementation. In the mld_del_delrec() path, the reference to pmc->idev can be released before ip6_mc_clear_src() completes, despite ip6_mc_clear_src() still using that object. This creates a potential use-after-free condition. The upstream fix moves the reference release until after ip6_mc_clear_src() returns, matching the ordering used by mld_clear_delrec().
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A Linux kernel IPv6 multicast handling flaw involving delayed release of pmc->idev.
A Linux kernel IPv6 multicast lifetime-management flaw in mld_del_delrec(), addressed by delaying release of pmc->idev.
A Linux kernel IPv6 multicast flaw in mld_del_delrec(), fixed by delaying release of pmc->idev.
A Linux kernel IPv6 multicast handling flaw in mld_del_delrec() addressed by delaying release of pmc->idev.
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Every observed campaign linking this CVE to a named adversary.
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Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.