CVE-2025-40034

A flaw was found in the Linux kernel PCI/AER (Advanced Error Reporting) subsystem. When platform firmware reports error information via the ACPI APEI GHES mechanism for a device that does not advertise an AER capability, dev->aer_info remains NULL. The function aer_ratelimit() does not check for this condition, leading to a NULL pointer dereference.

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.