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CVE-2025-22020 is a slab use-after-free vulnerability in the Linux kernel memstick subsystem's rtsx_usb_ms Memory Stick driver. During driver removal, rtsx_usb_ms_drv_remove releases a memstick host object while queued rtsx_usb_ms_poll_card work can still access it. The polling worker subsequently performs an invalid eight-byte read from freed memory. The removal path is reachable during USB device disconnect or interface unbinding. The defect can cause a kernel crash and has been resolved upstream.
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A slab use-after-free vulnerability in the Linux kernel's rtsx_usb_ms Memory Stick driver allows card-polling work to access freed memory during driver removal, causing a kernel crash. The advisory assigns a CVSS v3 score of 7.8, with local access and low privileges required. Echo's remediation is to update linux and related packages to version 6.1.133-1 or later.
A slab use-after-free vulnerability in the Linux kernel rtsx_usb_ms MemoryStick driver during device removal.
A slab-use-after-free vulnerability in rtsx_usb_ms_drv_remove within the Linux kernel's rtsx_usb_ms memory-stick driver. Red Hat addresses it in Important-rated advisory RHSA-2025:12662. The kernel update requires a reboot.
A slab use-after-free vulnerability in the Linux kernel rtsx_usb_ms Memory Stick USB driver removal path.
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Every observed campaign linking this CVE to a named adversary.
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Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.