CVE-2023-53803

An out-of-bounds read vulnerability was found in the SCSI Enclosure Services (SES) driver in the Linux kernel. The ses_enclosure_data_process() function lacks proper bounds checking when processing additional descriptor pointers, allowing reads beyond allocated slab memory when handling malformed enclosure data.

Exploitation requires a SCSI enclosure device providing malformed data, either through a malicious device or corrupted firmware responses. Standard systems without SAS/SCSI enclosures are not at risk.

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.

To mitigate this issue, prevent the ses module from being loaded. See https://access.redhat.com/solutions/41278 for instructions.