Security Bulletin: This Power System update is being released to address CVE-2023-37453

Summary

This affects the BMC’s physical USB ports.

Vulnerability Details

CVEID:CVE-2023-37453
**DESCRIPTION:**Linux Kernel is vulnerable to a denial of service, caused by an out-of-bounds flaw in the read_descriptors function in drivers/usb/core/sysfs.c in the USB subsystem. By using a specially crafted USB device, a physical attacker could exploit this vulnerability to cause the system to crash.
CVSS Base score: 4.6
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/259996 for the current score.
CVSS Vector: (CVSS:3.0/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)

Affected Products and Versions

Remediation/Fixes

Customers with the products below should install FW1050.11(1050_070) or newer to remediate this vulnerability.

Power 10

1. IBM Power System S1022 (9105-22A)
2. IBM Power System S1024 (9105-42A)
3. IBM Power System S1022S (9105-22B)
4. IBM Power System S1014 (9105-41B)
5. IBM Power System E1050 (9043-MRX)
6. IBM Power System L1022 (9786-22H)
7. IBM Power System L1024 (9786-42H)

Workarounds and Mitigations

Prevent physical access to the BMC’s USB ports.