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CVE-2022-0854 is an information-disclosure vulnerability in the Linux kernel Software I/O Translation Lookaside Buffer (swiotlb) DMA implementation. In DMA_FROM_DEVICE handling, swiotlb can copy an entire bounce buffer back to the original user buffer even when the device did not overwrite all of that buffer. Consequently, stale kernel-memory contents in the bounce buffer may be exposed to user space. The condition was demonstrated through SCSI SG_IO requests whose declared transfer length exceeds data actually returned by the device, including TEST UNIT READY requests that perform no device-data transfer. The upstream remediation reworked swiotlb bounce-copy behavior to preserve the original buffer contents where device data is absent.
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What an attacker gets, and what they’ve been doing with it.
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No public exploit code observed for this vulnerability.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
13 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A Linux kernel swiotlb information disclosure vulnerability where DMA_FROM_DEVICE bounce-buffer handling can leak stale kernel memory to user space.
Linux kernel swiotlb information-disclosure flaw involving DMA_FROM_DEVICE.
Linux kernel SWIOTLB information-disclosure vulnerability involving DMA_FROM_DEVICE.
Linux kernel SWIOTLB information-disclosure vulnerability affecting DMA_FROM_DEVICE handling.
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.