CVE-2026-45203 (GCVE-0-2026-45203)

Vulnerability from cvelistv5 – Published: 2026-07-10 20:57 – Updated: 2026-07-13 18:55
VLAI
Title
GPU DDK - rgxfw_hwperf_ufo() re-reads psCmdHeader->ui32CmdSize after initial check, TOCTOU
Summary
Kernel software installed and running inside a Host VM may post improper commands to the GPU Firmware to trigger a memory write outside the permitted range of memory for the host kernel. A TOCTOU bug existed where a malicious driver could modify values in memory after firmware validation but before use.
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-367 - CWE - CWE-367: Time-of-check Time-of-use (TOCTOU) Race Condition (4.20)
Assigner
References
Impacted products
Vendor Product Version
Imagination Technologies Graphics DDK Affected: 1.18 RTM2 (custom)
Affected: 23.2 RTM2 (custom)
Affected: 24.2 RTM2 (custom)
Affected: 25.1 RTM2 , ≤ 25.3 RTM (custom)
Affected: 26.1 RTM1 (custom)
Unaffected: 26.1 RTM2 (custom)
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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.