CVE-2026-80605

/// Technical description

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

HID: picolcd: prevent NULL pointer dereference in picolcd_send_and_wait()

In picolcd_send_and_wait(), an integer overflow of the signed loop counter

'k' can theoretically lead to a NULL pointer dereference of 'raw_data'.

If the loop executes more than INT_MAX times, 'k' becomes negative,

making the condition 'k < size' true even when 'size' is 0.

Change the type of 'k' to 'unsigned int' to prevent the overflow and

eliminate the out-of-bounds access.

Found by Linux Verification Center (linuxtesting.org) with the Svace static

analysis tool.

[[email protected]: extended hash length]

/// 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