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CVE-2025-38730 is an io_uring networking flaw in the Linux kernel's handling of ring-provided buffers during partial receive-operation retries. Ring-provided buffers are valid only in the execution context in which they are acquired, and io_uring ordinarily invalidates them before a retry. In affected networking paths, a partial operation could instead retain the buffer when MSG_WAITALL is specified or when a stream socket processes insufficient data. The retained buffer could span subsequent execution contexts, despite invalidation semantics. If the buffer ring is unregistered before retry, the retained buffer-list reference can become invalid. If sockets share a buffer group, concurrent receives can consume the same userspace buffer. The fix commits partial buffers rather than allowing partial retries to pin ring-provided buffers across executions.
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17 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
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.
A Linux kernel io_uring networking vulnerability involving ring-provided buffers being retained across retry executions, which can lead to invalid buffer references and userspace data corruption when buffers are reused improperly.
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.