CVE-2026-98232

/// Technical description

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

scsi: core: Validate MODE SENSE lengths in scsi_cdl_enable()

scsi_cdl_enable() uses length fields returned by MODE SENSE to locate

the ATA feature mode page in a 64-byte stack buffer. A target can report

a total length shorter than its mode header and block descriptors. The

unsigned subtraction used for the MODE SELECT length can wrap, and the

separately computed buf_data can point beyond buf.

During automatic scan, enable is false, so the read-modify-write of

buf_data[4] can clear the low two bits of a target-selected

out-of-bounds stack byte. scsi_mode_select() can then copy up to 64

bytes from outside the buffer into the outgoing MODE SELECT payload,

disclosing stack contents to the target.

This is reachable while scanning a USB storage device that identifies as

an ATA device and advertises CDL support. No filesystem mount or

userspace access to the block device is required.

On upstream commit cee9395acd80 ("Li

/// Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

/// References