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CVE-2024-53222 is a NULL pointer dereference vulnerability in the Linux kernel zram subsystem. During zram_add(), device_add_disk() can expose the device through sysfs before comp_algorithm_set() initializes the primary compression-algorithm pointer. Reading compression-algorithm information during this window can cause comp_algorithm_show() to pass a NULL pointer into string-comparison code, triggering a kernel fault and potentially disrupting availability. The fix initializes the compression algorithm before exposing the device.
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A Linux kernel zram initialization-order flaw exposes a device through sysfs before its primary compression algorithm is initialized. A local user can trigger a NULL pointer dereference through comp_algorithm_show(), potentially causing denial of service. The advisory assigns CVSS v3 severity 5.5 and recommends updating the affected Google COS kernel packages to version 18867.90.4 or later.
Linux kernel zram NULL-pointer dereference flaw.
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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.
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