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CVE-2025-38571 is an out-of-bounds memory-access vulnerability in the Linux kernel SUNRPC client's NFS-over-TLS TLS-alert handling. The tls_alert_recv path assumes that valid data remains in the msghdr iterator's kvec. During control-message processing, however, copying can advance the message iterator and its kvec pointer before tls_alert_recv is invoked. The corrected implementation reworks control-message handling through sock_recvmsg(), allocates a kvec-backed buffer for TLS control messages after kTLS signals their presence, and restores the iterator before calling tls_alert_recv.
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Linux kernel SUNRPC vulnerability involving client-side handling of TLS alerts.
Linux kernel SunRPC flaw in client-side handling of TLS alerts.
Linux kernel SunRPC flaw affecting client-side handling of TLS alerts.
Linux kernel SunRPC client-side flaw in the handling of TLS alerts.
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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.