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CVE-2023-52615 is a deadlock vulnerability in the Linux kernel hardware random-number-generator (hwrng) core. It occurs when a process reads from an hwrng character device into a userspace buffer backed by a mapping of that same hwrng device. Resolving the destination-buffer page fault re-enters the hwrng read path recursively, causing a deadlock. The upstream correction uses a stack buffer for the data passed to copy_to_user, preventing page-fault-driven recursive reads.
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What an attacker gets, and what they’ve been doing with it.
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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.
8 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A page-fault deadlock condition in the Linux kernel hardware RNG core when using memory-mapped hwrng.
Linux kernel hardware random-number-generator core flaw that can cause a page-fault deadlock when an hwrng is memory mapped.
Linux kernel hardware-random-number-generator mapped-memory page-fault deadlock vulnerability.
Linux kernel hardware-random-number-generator mmap page-fault deadlock flaw.
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.