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CVE-2025-22020 is a slab use-after-free vulnerability in the Linux kernel memstick subsystem's rtsx_usb_ms driver. During rtsx_usb_ms_drv_remove(), the memstick host object can be released while previously queued rtsx_usb_ms_poll_card work remains runnable on the events workqueue. The poll worker subsequently dereferences the freed host object, producing a kernel use-after-free read. The race is reachable during removal of the associated USB interface, including disconnect or unbinding of the parent Realtek USB card-reader device.
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No public exploit code observed for this vulnerability.
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10 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A slab use-after-free vulnerability in the Linux kernel rtsx_usb_ms Memory Stick USB driver removal path.
A slab use-after-free vulnerability in the Linux kernel rtsx_usb_ms MemoryStick driver removal path.
A slab use-after-free vulnerability in the Linux kernel Realtek USB Memory Stick driver removal path.
A slab use-after-free vulnerability in the Linux kernel rtsx_usb_ms memory-stick driver removal routine.
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.