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CVE-2024-42244 is a type-confusion flaw in the Linux kernel MOS7840 USB serial driver resume path. After the USB serial core began invoking its generic resume implementation when a driver supplied no resume callback, resuming an open MOS7840 device submitted both read URBs. The second read URB retained a context pointer intended for USB serial core handling rather than the MOS7840 per-port structure expected by the driver callback. Processing that URB can dereference the incompatible context and crash the kernel. The fix adds MOS7840-specific suspend and resume handlers and restores correct read-URB state handling during resume.
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Linux kernel MOS7840 USB serial driver crash on resume.
Linux kernel MOS7840 USB serial driver crash-on-resume flaw.
Linux kernel MOS7840 USB serial driver crash on resume.
A Linux kernel USB serial mos7840 driver flaw that can cause a crash when resuming.
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Cross-references every affected SKU, including bundled OEM variants.
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