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CVE-2025-38106 is a use-after-free vulnerability in the Linux kernel io_uring subsystem's __io_uring_show_fdinfo() function. The function can access the task_struct referenced by sq->thread after that thread has exited and its task_struct has been released. Holding ctx->uring_lock does not prevent the referenced thread from exiting or being released. The corrected implementation assigns and retrieves the thread pointer under RCU protection and obtains a task_struct reference before use.
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What an attacker gets, and what they’ve been doing with it.
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Patch, then assume compromise.
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
12 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A Linux kernel io_uring use-after-free vulnerability that can lead to local privilege escalation, information disclosure, or denial of service.
A Linux kernel io_uring use-after-free vulnerability that can enable local privilege escalation, information disclosure, or denial of service.
A Linux kernel io_uring use-after-free vulnerability that may allow local privilege escalation, information disclosure, or denial of service.
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.