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Vulnerabilities

Vulnerability · CVE-2025-40034

In the Linux kernel, the following vulnerability has been resolved: PCI/AER: Avoid NULL pointer dereference in aer_ratelimit() When platform firmware supplies error information to

Published Oct 28, 2025 · catalog updated May 11, 2026 · Linux Linux

Open the advisory

Exploitation likelihood is not on this record for CVE-2025-40034. A missing EPSS score is not a low risk. Compare Linux Linux with the linked advisory before you change production.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
  • EPSS is missing. A missing score is not a low risk.
Severity
None0.0
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
Not in the current FIRST EPSS dataset
Remediation
Version ranges on file
Affected products
vendor Linux Linux a57f2bfb4a5863f83087867c0e671f2418212d23 <deb2f228388ff3a9d0623e3b59a053e9235c341d

In the Linux kernel, the following vulnerability has been resolved: PCI/AER: Avoid NULL pointer dereference in aer_ratelimit() When platform firmware supplies error information to the OS, e.g., via the ACPI APEI GHES mechanism, it may identify an error source device that doesn't advertise an AER Capability and therefore dev->aer_info, which contains AER stats and ratelimiting data, is NULL. pci_dev_aer_stats_incr() already checks dev->aer_info for NULL, but aer_ratelimit() did not, leading to NULL pointer dereferences like this one from the URL below: {1}[Hardware Error]: Hardware error from A

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor Linux Linux a57f2bfb4a5863f83087867c0e671f2418212d23 <deb2f228388ff3a9d0623e3b59a053e9235c341da57f2bfb4a5863f83087867c0e671f2418212d23 <deb2f228388ff3a9d0623e3b59a053e9235c341d

How to fix CVE-2025-40034

  • Recommended remediation

    Affected version ranges suggest a fixed boundary. Verify against the vendor advisory for your release.

  • Official advisories

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

Exploitation likelihood is not on this record for CVE-2025-40034. A missing EPSS score is not a low risk. Compare Linux Linux with the linked advisory before you change production.

Which versions are affected?

Compare what you have installed with Linux Linux a57f2bfb4a5863f83087867c0e671f2418212d23 <deb2f228388ff3a9d0623e3b59a053e9235c341d a57f2bfb4a5863f83087867c0e671f2418212d23 <deb2f228388ff3a9d0623e3b59a053e9235c341d. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS is absent from the current FIRST dataset. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Oct 28, 2025 · EUVD

    Detected

    In the Linux kernel, the following vulnerability has been resolved: PCI/AER: Avoid NULL pointer dereference in aer_ratelimit() When platform firmware supplies error information to the OS, e.g., via the ACPI APEI GHES mechanism, it may identify an error source device that doesn't advertise an AER Capability and therefore dev->aer_info, which contains AER stats and ratelimiting data, is NULL. pci_de

  2. May 11, 2026 · EUVD

    Updated

    In the Linux kernel, the following vulnerability has been resolved: PCI/AER: Avoid NULL pointer dereference in aer_ratelimit() When platform firmware supplies error information to the OS, e.g., via the ACPI APEI GHES mechanism, it may identify an error source device that doesn't advertise an AER Capability and therefore dev->aer_info, which contains AER stats and ratelimiting data, is NULL. pci_de

Sources

  • EUVDVulnerability recordEUVD-2025-36494

    In the Linux kernel, the following vulnerability has been resolved: PCI/AER: Avoid NULL pointer dereference in aer_ratelimit() When platform firmware supplies error information to the OS, e.g., via the ACPI APEI GHES mechanism, it may identify an error source device that doesn't

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog Oct 23, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.