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CVE-2022-49122 is a potential Spectre variant 1 gadget in the Linux kernel device-mapper ioctl path. A user-controlled cmd value is used as an array index. Speculative execution may transiently perform an unsafe array access despite architectural bounds validation, allowing a side channel to expose kernel-memory contents. The upstream fix applies array_index_nospec to constrain the index before the array access.
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A potential Spectre v1 gadget in the Linux kernel device-mapper ioctl handling.
A potential Spectre v1 gadget in the Linux kernel device-mapper ioctl path.
A potential Spectre v1 gadget in the Linux kernel device-mapper ioctl path, addressed in the Red Hat Enterprise Linux 8.2 AUS kernel update.
A medium-severity Linux kernel device-mapper ioctl Spectre v1 speculative-execution information-disclosure vulnerability. A user-controlled command value can be used as an array index, potentially allowing kernel-memory contents to leak to userspace speculatively. The resolution uses array_index_nospec.
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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.