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CVE-2024-42246 is an infinite-loop vulnerability in the Linux kernel SUNRPC TCP connection setup function xs_tcp_setup_socket(). When a BPF program causes kernel_connect() to return -EPERM, the connection setup code can loop indefinitely, flooding system logs and potentially freezing the kernel. The correction remaps EPERM to ECONNREFUSED, providing a network error that higher layers are prepared to handle. The corresponding UDP request function, xs_udp_send_request(), already handles EPERM.
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A Linux kernel SUNRPC error-handling vulnerability can cause an infinite loop when a BPF program causes kernel_connect() to return -EPERM. The loop can flood syslog and potentially freeze the kernel, resulting in denial of service. The reference assigns a CVSS v3 base score of 5.5, with local access and low privileges required. The fix remaps EPERM to ECONNREFUSED.
A Linux kernel SUNRPC networking denial-of-service flaw in which an EPERM result from a BPF program attached to kernel_connect() may cause an infinite loop in xs_tcp_setup_socket(), potentially exhausting logging resources and freezing the kernel.
Linux kernel net/sunrpc flaw involving EPERM handling after connection failures in xs_tcp_setup_socket.
A vulnerability addressed by the updated Red Hat Enterprise Linux 9 el9/flatpak-sdk container image; no technical details are provided in this advisory.
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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.