CVE-2023-53062

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

net: usb: smsc95xx: Limit packet length to skb->len

Packet length retrieved from descriptor may be larger than the actual socket buffer length. In such case the cloned skb passed up the network stack will leak kernel memory contents.

The patch fixes an information disclosure vulnerability in the smsc95xx USB Ethernet driver, where packet descriptors could specify a length greater than the actual buffer size (skb->len), potentially leaking uninitialized kernel memory. This issue could be triggered by a malicious USB device, and the patch adds a strict bounds check before processing packets. Local attacker with physical or USB device access can trigger it. For the CVSS the high confidentiality impact due to memory leakage.

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.