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CVE-2025-38154 is a use-after-free vulnerability in the Linux kernel BPF sockmap subsystem caused by insufficient synchronization between backlog message transmission and socket closure. The backlog thread accesses sk->sk_socket during skb_send_sock() without locking or retaining a reference to the socket. Concurrent socket release can clear the socket operations pointer and free the socket before the sending thread dereferences sock->ops->sendmsg. During sock_map_close(), removing sockmap links can reduce the psock reference count to zero, causing subsequent reference acquisition to fail and bypassing backlog-work cancellation. The flaw affects TCP, UDP, UNIX, and VSOCK sockets and can cause a kernel panic, with potential privilege escalation.
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No public exploit code observed for this vulnerability.
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Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
17 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A Linux kernel BPF sockmap race condition/use-after-free issue where sk_socket can be used after being freed during sending, potentially causing a kernel panic. It affects multiple socket types including TCP, UDP, Unix, and vsock.
A Linux kernel use-after-free vulnerability in BPF sockmap that can lead to denial of service and privilege escalation.
A Linux kernel use-after-free vulnerability in BPF sockmap that can lead to denial of service and privilege escalation.
A Linux kernel use-after-free vulnerability in BPF sockmap that can lead to denial of service and privilege escalation.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.