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CVE-2025-38730 is a buffer-lifetime vulnerability in the Linux kernel's io_uring networking implementation. Ring-provided buffers may be valid only within the execution context in which they were acquired, but networking operations can retain them across partial retries when MSG_WAITALL is set or a streaming socket processes insufficient data. Unregistering the buffer ring before a subsequent retry can invalidate the retained buffer-list reference. Multiple sockets sharing a buffer group can also receive into the same userspace memory, corrupting application data. The fix prevents partial retries from pinning ring-provided buffers across execution contexts.
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No public exploit code observed for this vulnerability.
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18 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A Linux kernel io_uring networking vulnerability involving retention of ring-provided buffers across partial receive retries. Unregistering the buffer ring before a retry can invalidate a retained reference, while sockets sharing a buffer group can receive data into the same userspace memory, causing application data corruption. The reference assigns a CVSS v3 base score of 7.8, with local access and low privileges required.
A Linux kernel vulnerability involving improper io_uring/net buffer handling that can cause data corruption and system instability.
A Linux kernel flaw involving improper io_uring/net buffer handling that can cause data corruption and system instability.
A Linux kernel flaw involving improper io_uring/net buffer handling that can cause data corruption and system instability.
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.