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Buffer Overflow The advisory has been revoked - it doesn't affect any version of package rtla  (opens in a new tab)

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  • Snyk IDSNYK-CENTOS10-RTLA-18043507
  • published21 Jul 2026
  • disclosed19 Jul 2026
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Introduced: 19 Jul 2026

NewCVE-2026-64085  (opens in a new tab)
CWE-120  (opens in a new tab)

Amendment

The Centos security team deemed this advisory irrelevant for Centos:10.

NVD Description

Note: Versions mentioned in the description apply only to the upstream rtla package and not the rtla package as distributed by Centos.

In the Linux kernel, the following vulnerability has been resolved:

hwmon: (pmbus/adm1266) bounce blackbox records through a protocol-sized buffer

adm1266_pmbus_block_xfer() copies the device-supplied block payload into the caller-provided buffer using the device-supplied length:

memcpy(data_r, &msgs[1].buf[1], msgs[1].buf[0]);

The helper does not know how large data_r is and trusts the device to return at most one record's worth of bytes. adm1266_nvmem_read_blackbox() violates that contract: it advances read_buff inside data->dev_mem in ADM1266_BLACKBOX_SIZE (64-byte) strides while the helper is willing to write up to ADM1266_PMBUS_BLOCK_MAX (255) bytes. A device that returns more than 64 bytes on the trailing record (read_buff offset 1984 in the 2048-byte dev_mem allocation) overflows dev_mem by up to 191 bytes before the post-call

if (ret != ADM1266_BLACKBOX_SIZE)
    return -EIO;

can reject the response.

Contain the fix in the caller without changing the helper signature: read each record into a 255-byte local bounce buffer that matches the helper's maximum output, validate the returned length, and only then copy exactly ADM1266_BLACKBOX_SIZE bytes into the dev_mem slot.