CVE-2023-1855
kernel: use-after-free bug in remove function xgene_hwmon_remove
Severity
LowRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · March 10, 2023
Updated · June 28, 2026
Description
A use-after-free flaw was found in xgene_hwmon_remove in drivers/hwmon/xgene-hwmon.c in the Hardware Monitoring Linux Kernel driver (xgene-hwmon). This flaw could allow a local attacker to crash the system due to a race problem, possibly leading to a kernel information leak.
Statement
Because this flaw affects a specific CPU family, and because exploitation requires elevated system privileges, Red Hat assesses the impact of this flaw as Low.
CVSS score applicability
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
This flaw can be mitigated by preventing the affected APM X-Gene SoC HW monitor kernel driver (apm_xgene) from loading during the boot time. Ensure the module is added into the blacklist file.
Refer:
How do I blacklist a kernel module to prevent it from loading automatically?
https://access.redhat.com/solutions/41278
CVSS / CWE
CVSS 3.1 · 6.4CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
CWE-416 · Use After Free