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CVE-2024-41041 is a race condition in the Linux kernel UDP socket lifecycle. In udp_lib_get_port(), a bound UDP socket was inserted into the UDP hash table before its SOCK_RCU_FREE flag was set. Concurrent UDP IPv4 or IPv6 early-demultiplexing and socket-lookup paths can retrieve the socket without acquiring a reference and rely on SOCK_RCU_FREE to establish that it is safe to access during an RCU grace period. The ordering permitted those paths to observe the socket before the safety flag was present, triggering a DEBUG_NET_WARN_ON_ONCE condition in udp_v4_early_demux(). The fix sets SOCK_RCU_FREE before inserting the socket into the hash table.
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Linux kernel UDP socket-lifecycle issue in udp_lib_get_port(), addressed by earlier setting of SOCK_RCU_FREE.
Linux kernel UDP lifecycle issue addressed by setting SOCK_RCU_FREE earlier in udp_lib_get_port().
UDP socket lifetime-management issue in Linux kernel port allocation.
Linux kernel UDP socket RCU-free state handling flaw.
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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.