CVE-2026-23037

/// Technical description

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

can: etas_es58x: allow partial RX URB allocation to succeed

When es58x_alloc_rx_urbs() fails to allocate the requested number of

URBs but succeeds in allocating some, it returns an error code.

This causes es58x_open() to return early, skipping the cleanup label

'free_urbs', which leads to the anchored URBs being leaked.

As pointed out by maintainer Vincent Mailhol, the driver is designed

to handle partial URB allocation gracefully. Therefore, partial

allocation should not be treated as a fatal error.

Modify es58x_alloc_rx_urbs() to return 0 if at least one URB has been

allocated, restoring the intended behavior and preventing the leak

in es58x_open().

/// 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