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CVE-2022-48632 is a stack-based buffer overflow in the Linux kernel Mellanox BlueField MLXBF I2C driver. In mlxbf_i2c_smbus_start_transaction(), memcpy() operations are performed in a loop without enforcing an upper bound on operation->length while the destination index advances. An oversized operation length can consequently cause copying beyond a stack-allocated buffer. The flaw was introduced in Linux kernel 5.10 and is fixed upstream in 5.10.146, 5.15.71, 5.19.12, and 6.0.
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4 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A Linux kernel stack-overflow vulnerability in the mlxbf I2C driver function mlxbf_i2c_smbus_start_transaction().
A Linux kernel stack-overflow flaw in the Mellanox BlueField I2C (i2c-mlxbf) driver's SMBus transaction handling. Red Hat assesses its impact as availability-only for its builds, potentially causing a system crash or denial of service.
A Linux kernel stack-overflow vulnerability in the MLXBF I2C bus driver. An unchecked operation->length value allows repeated memcpy() operations while data_idx increments in mlxbf_i2c_smbus_start_transaction().
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.