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No exploitation reportedFix available

CVE-2026-18629

GPU DDK - libusc.so NPD due to integer overflow at ConvertSwitchToArrayLookup during WebGPU shader compilation

No exploitation reported by the sources we read.

  • Published2026-10-30
  • WeaknessCWE-190

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

A web page that contains unusual GPU shader code is loaded into the GPU compiler process and can lead memory allocation failure. If the allocation failure is not properly handled, the compiler may dereference a NULL pointer at a controlled offset, resulting in a crash of the compiler process. On certain platforms, when the compiler process has system privileges this could lead to crashes or enable further exploits on the device. The weakness results from performing arithmetic operations on values derived from the shader program without properly preventing integer overflow. The overflow can cause incorrect memory size calculations, leading to memory allocation failures and subsequent invalid program behaviour. Integer overflow can produce unexpected values that affect memory allocation and other security-relevant operations.

Timeline

dates in UTC
  1. 2026-10-3002:00CVE publishedCNA

Versions per branch

Products declared by the CNA1 product

As imaginationtech, the CNA that assigned this CVE, declared them in the CVE record; versions as written.

  • Imagination Technologies Graphics DDKother versions: unknown

    platforms: Linux, Android

    Affected
    • = 23.2 RTM2no fix statedcustom
    • = 24.2 RTM2no fix statedcustom
    • ≥ 25.1 RTM2, ≤ 25.3 RTMno fix statedcustom
    • = 26.1 RTM1no fix statedcustom

    Not affected = 1.18 RTM2 · = 26.1 RTM2

Source: the CNA record (CVE Program), © The MITRE Corporation,CVE Terms of UseCVE recordupdated 2026-10-30

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • :unknown:Androidfrom SoCVersion:0 · fixed in SoCVersion:2026-11-05

Full record on NVD

Fix

No fix published by the sources we read yet. NVD record

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published
2026-10-30
Last Modified
2026-11-05
NVD status
Deferred
GitHub Advisory
GHSA-29cf-2525-q9j7

Frequently asked questions

What is CVE-2026-18629?

A web page that contains unusual GPU shader code is loaded into the GPU compiler process and can lead memory allocation failure. If the allocation failure is not properly handled, the compiler may dereference a NULL pointer at a controlled offset, resulting in a crash of the compiler process. On certain platforms, when the compiler process has system privileges this could lead to crashes or enable further exploits on the device. The weakness results from performing arithmetic operations on values derived from the shader program without properly preventing integer overflow. The overflow can cause incorrect memory size calculations, leading to memory allocation failures and subsequent invalid program behaviour. Integer overflow can produce unexpected values that affect memory allocation and other security-relevant operations.

Is CVE-2026-18629 actively exploited?

Active exploitation of CVE-2026-18629 has not been confirmed. Its EPSS score was 0.1% on 2026-11-05, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2026-18629?

CVE-2026-18629 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

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