CVE intelligence and bounded remediation

CVE-2022-34398 — Dell BIOS contains a Time-of-check Time-of-use vulnerability

High CVSS 7.5

Dell BIOS contains a Time-of-check Time-of-use vulnerability. A local authenticated malicious user could\u00a0potentially exploit this vulnerability by using a specifically timed DMA transaction during an SMI to gain arbitrary code execution on the system.

Severity
High
CVSS
7.5 (3.1)
Published
2023-02-01
CISA KEV
Not currently listed
Ecosystem
operating-system
Weaknesses
CWE-367

Affected products

  • dell / alienware_area_51m_r1_firmware
  • dell / alienware_area_51m_r2_firmware
  • dell / alienware_aurora_r10_firmware
  • dell / alienware_aurora_r11_firmware
  • dell / alienware_aurora_r12_firmware
  • dell / alienware_aurora_r13_firmware

Showing 6 representative product identities from 242 source matches. Confirm exact affected versions with the linked vendor and NVD evidence.

Matched remediation archetype

Race condition, TOCTOU, and lifecycle synchronization

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Check exposure

  • Map concurrent actors, shared state, lock boundaries, signals, callbacks, retries, and check-then-use sequences in the affected path.
  • Determine whether untrusted users can influence timing, object names, filesystem state, or repeated state transitions.
  • Identify clustered and multi-process behavior that repository-local tests may not represent.

Remediate safely

  • Make the sensitive state transition atomic or protect it with a consistently ordered synchronization primitive.
  • Perform authorization and invariant checks on the same authoritative object and transaction used for the operation.
  • Use unique private resources, safe ownership transfer, and idempotent operations; add deterministic concurrency regression tests.

Authoritative sources

Complete CVE record and remediation plan

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