CVE-2026-64135

CVE CVE-2026-64135EUVD EUVD-2026-45820Published 2026-07-19T15:40:29.000Z

What the advisory describes

In the Linux kernel, the following vulnerability has been resolved: hwmon: (pmbus/adm1266) widen blackbox-info buffer to I2C_SMBUS_BLOCK_MAX adm1266_nvmem_read_blackbox() declares a 5-byte stack buffer and passes it to i2c_smbus_read_block_data() to retrieve the 4-byte BLACKBOX_INFO response. i2c_smbus_read_block_data() does not honour caller buffer sizes -- it memcpy()s data.block[0] bytes from the SMBus transaction (where data.block[0] is the length byte returned by the slave device, up to I2C_SMBUS_BLOCK_MAX = 32): memcpy(values, &data.block[1], data.block[0]); If the device returns any block length above 5, the call overflows the caller's 5-byte stack buffer before the post-call if (ret != 4) return -EIO; check has a chance to reject the response. Widen the local buffer to I2C_SMBUS_BLOCK_MAX so the helper has room for any well-formed SMBus block response, matching the convention used by the other i2c_smbus_read_block_data() callers in this driver.

Source: EUVD (ENISA), in the words of the advisory.

Products the advisory names

These come from the advisory itself, not from any check we performed.

Linux — Linux 15609d1893020436e1e8ccfd9ded774a96dd17a2 <6ed16a40b162e9d87d9ac8bed4d7f0e3e807700e; patch: 6.1.175; 5.10; patch: 6.18.34; patch: 0; patch: 7.0.11; 15609d1893020436e1e8ccfd9ded774a96dd17a2 <7f705e581ef3e6bb308a121a89adf5237d968204; 15609d1893020436e1e8ccfd9ded774a96dd17a2 <0dbf64c502443c08c2e28a77ecbfcc5479d93228; patch: 5.15.209; 15609d1893020436e1e8ccfd9ded774a96dd17a2 <eee213daa1e1b402eb631bcd1b8c5aa340a6b081; patch: 6.6.142; patch: 5.10.258; 15609d1893020436e1e8ccfd9ded774a96dd17a2 <ba09f4baa5bd96c5d26c942defa546a72dbbe5bf; patch: 7.1; 15609d1893020436e1e8ccfd9ded774a96dd17a2 <33251abb9c9dd62943be76f0427c5527ee39188f; patch: 6.12.92; 15609d1893020436e1e8ccfd9ded774a96dd17a2 <ca560f7566df7e2826c2999e959e6b94eb938f76; 15609d1893020436e1e8ccfd9ded774a96dd17a2 <2b7a698d5093b548c464828d984f05ced5f3fd2a

The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.

Carried in the product catalogue

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Linux — Linux

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