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CVE-2025-46709· NVD / CVE Program· CNA imaginationtech

GPU DDK - Security fix for PP-171570 can lead to an uninitialised pointer dereference and memory leak

Possible memory leak or kernel exceptions caused by reading kernel heap data after free or NULL pointer dereference kernel exception.

HighCVSS 7.5 · v3.1—No exploit No fix recorded

Noroxi analysis

No Noroxi analysis for this record yet

We don't hand-write analysis for the hundreds of thousands of vulnerabilities in the database; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.

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Published
Aug 8, 2025
Updated
Jun 17, 2026
EPSS
0.3% · 24th percentile
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Report tools

JSON

Action score

30

Monitor

Low priority for now.

CVSS
30 / 40 · 7.5 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.3%

CISA SSVC decision

Exploitation
none
Automatable
yes
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

Affected systems

VendorProduct
imaginationtechddk

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • imaginationtech ddk1.17 and later · up to 25.1 inclusive

Versions reported by the vendor

Affected version ranges reported by the assigning authority (imaginationtech). Independent of NVD's CPE analysis and usually ahead of it.

  • Imagination Technologies Graphics DDK

    • 25.1 RTM2not affected
    • 1.15 RTM, 1.17 RTM, 1.18 RTMaffected
    • 23.2 RTM and later · up to and including 25.1 RTM1affected

Same product

imaginationtech: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-16280GPU DDK - Integer overflow in _PMRLogicalOffsetToPhysicalOffset
    39Monitor
  • CVE-2025-13952GPU DDK - libusc UAF via WebGPU shaders at MergeConsecutiveBarriersBP
    39Monitor
  • CVE-2026-21732GPU DDK - libusc OOB write at ConvertSwitchToArrayLookupBP during WebGPU shader compilation
    38Monitor
  • CVE-2025-25176GPU DDK - GPU Register value contents leaked from secure workloads to non-secure world
    36Monitor
  • CVE-2025-58411GPU DDK - Reservation::psMappedPMR can change while used by a freelist -> UAF
    35Monitor
  • CVE-2026-22166GPU DDK - Write UAF in KEGLGetPoolBuffers, WebGL reachable
    32Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

No fix version is recorded for this entry. Check the references for vendor advisories.

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

  • CVE-2025-13952168 days apartGPU DDK - libusc UAF via WebGPU shaders at MergeConsecutiveBarriersBP
    39Monitor
  • CVE-2025-58411158 days apartGPU DDK - Reservation::psMappedPMR can change while used by a freelist -> UAF
    35Monitor
  • CVE-2026-22165266 days apartGPU DDK - UAF read of GLES3Context::psDrawParams and GLES3Context::psMode and UAF read/write of RMJob::apsCCBs
    32Monitor
  • CVE-2026-22166266 days apartGPU DDK - Write UAF in KEGLGetPoolBuffers, WebGL reachable
    32Monitor
  • CVE-2025-10865158 days apartGPU DDK - DevmemIntGetReservationData does not ref the PMR it returns
    31Monitor
  • CVE-2026-34196336 days apartGPU DDK - UAF read and/or write of arbitrary physical memory due to integer truncation in PMRDevPhysAddrOSMem
    31Monitor

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
none
Integrity
none
Availability
high · the service can be disrupted
Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
None
Integrity impact
None
Availability impact
High

Weakness class (CWE)

CWE-416 · Use After Free

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

nvd-secondary

Root cause

After a memory region is freed, another reference pointing to it is still used. By then, the same region may have been allocated for different data.

The bug in code

The whole CWE-416 class

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

Vulnerable

c
free(dev->buf);/* ... another thread is still running ... */process(dev->buf);

Fixed

c
lock(&dev->lock);free(dev->buf);dev->buf = NULL;unlock(&dev->lock);

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log

No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.

References

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records