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CVE-2023-52730 is a resource-management flaw in the Linux kernel MMC/SDIO subsystem. If SDIO function setup fails in sdio_add_func() or sdio_init_func(), the subsequent sdio_remove_func() cleanup path can omit release of device-tree-node and device references because the SDIO function has not been marked present. The upstream correction makes function presence govern only whether device_del() is needed, while always releasing applicable node and device references. It also moves device-reference acquisition to sdio_alloc_func() and release to sdio_release_func() to balance reference counting.
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No public exploit code observed for this vulnerability.
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4 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Linux kernel MMC/SDIO resource-leak vulnerability affecting error-handling paths.
A Linux kernel MMC/SDIO issue involving possible resource leaks in certain error-handling paths. The cited automatic assessment characterizes its impact as low.
A Linux kernel MMC/SDIO error-path resource leak vulnerability. Failed SDIO function initialization or addition can leave device and device-tree references unreleased, causing memory/resource leaks and a potential availability impact.
A Linux kernel MMC/SDIO resource-leak vulnerability in error-handling paths. Failed SDIO function initialization or addition can leave device and device-tree references unreleased; the fix ensures cleanup routines are called and balances get_device()/put_device() reference handling.
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.