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    "nvd": "{\"cve\":{\"id\":\"CVE-2026-43198\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2026-05-06T12:16:38.857\",\"lastModified\":\"2026-07-07T12:16:46.850\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\ntcp: fix potential race in tcp_v6_syn_recv_sock()\\n\\nCode in tcp_v6_syn_recv_sock() after the call to tcp_v4_syn_recv_sock()\\nis done too late.\\n\\nAfter tcp_v4_syn_recv_sock(), the child socket is already visible\\nfrom TCP ehash table and other cpus might use it.\\n\\nSince newinet-\u003epinet6 is still pointing to the listener ipv6_pinfo\\nbad things can happen as syzbot found.\\n\\nMove the problematic code in tcp_v6_mapped_child_init()\\nand call this new helper from tcp_v4_syn_recv_sock() before\\nthe ehash insertion.\\n\\nThis allows the removal of one tcp_sync_mss(), since\\ntcp_v4_syn_recv_sock() will call it with the correct\\ncontext.\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"include/net/inet_connection_sock.h\",\"include/net/tcp.h\",\"net/ipv4/syncookies.c\",\"net/ipv4/tcp_fastopen.c\",\"net/ipv4/tcp_ipv4.c\",\"net/ipv4/tcp_minisocks.c\",\"net/ipv6/tcp_ipv6.c\",\"net/mptcp/subflow.c\",\"net/smc/af_smc.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2\",\"lessThan\":\"fe89b2f05b854847784f91127319172945c1fadd\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2\",\"lessThan\":\"7178e2a8027423b2af17ab95df73a749a5b72e5b\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2\",\"lessThan\":\"858d2a4f67ff69e645a43487ef7ea7f28f06deae\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"include/net/inet_connection_sock.h\",\"include/net/tcp.h\",\"net/ipv4/syncookies.c\",\"net/ipv4/tcp_fastopen.c\",\"net/ipv4/tcp_ipv4.c\",\"net/ipv4/tcp_minisocks.c\",\"net/ipv6/tcp_ipv6.c\",\"net/mptcp/subflow.c\",\"net/smc/af_smc.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"2.6.12\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"2.6.12\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.18.16\",\"lessThanOrEqual\":\"6.18.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.19.6\",\"lessThanOrEqual\":\"6.19.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.0\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]},{\"source\":\"0b0ca135-0b70-47e7-9f44-1890c2a1c46c\",\"affectedData\":[{\"vendor\":\"Red 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}