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CVE-2026-93316— Starting daemon with --cdi-disabled flag can lead to panic on specific builds

Quick assessment

Affected
moby BuildKit
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

如果 BuildKit 守护进程在启动时使用了 参数，那么在构建尝试使用 CDI 设备时，可能会导致守护进程发生恐慌（panic）。这种情况可能是恶意触发的，也可能是无意中发生的。

CVSS 7.1 · High

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service

Affected Version Matrix 1

VendorProduct Version RangeStatus
moby BuildKit < 0.33.1 affected
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I. Basic Information for CVE-2026-93316

Vulnerability Information
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Vulnerability Title
Starting daemon with --cdi-disabled flag can lead to panic on specific builds
Source: CVE Program / CVE List V5
Vulnerability Description
If BuildKit daemon is started with --cdi-disabled it can lead to daemon panic when builds try to use CDI devices. This can happen maliciously or by accident.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
空指针解引用
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
moby BuildKit 0 ~ 0.33.1 -

II. Public POCs for CVE-2026-93316

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2026-93316

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Vendor Advisories for CVE-2026-93316 (1)

Vendor Pages for CVE-2026-93316 (1)

Same Patch Batch · moby · 2026-10-05 · 8 CVEs total

CVE-2026-93318 7.5 HIGH Cache poisoning via unvalidated image layer DiffIDs
CVE-2026-93322 6.9 MEDIUM Malformed MergeOp can crash the BuildKit daemon
CVE-2026-93323 6.8 MEDIUM Oversized Dockerfile or .dockerignore can exhaust buildkitd memory
CVE-2026-93320 6.0 MEDIUM BuildKit improperly handles special files in build snapshots
CVE-2026-93326 6.0 MEDIUM Crafted Git build source can bypass certain policy validation
CVE-2026-93317 5.9 MEDIUM Container blob cache can accept unverified content
CVE-2026-93319 5.7 MEDIUM A malicious frontend can cause a daemon panic

IV. Related Vulnerabilities

Same product: BuildKit
Same vendor: moby
Same weakness: CWE-476

V. Comments for CVE-2026-93316

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