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Docker Desktop grpcfuse Kernel Module Uncontrolled Recursion Denial-of-Service

IdentifiersCVE-2026-8936CWE-674· Uncontrolled Recursion

CVE-2026-8936 is a local denial-of-service vulnerability in Docker Desktop's grpcfuse kernel module. The flaw is caused by unbounded recursion when a container creates deeply nested directories on a bind-mounted host folder and then triggers a dentry invalidation event. The vulnerable code path can recurse without adequate bounds checking or termination, leading to a VM panic. Public reporting also characterizes the root cause as improper validation of user-supplied data that results in uncontrolled recursion. Docker fixed the issue in Docker Desktop 4.76.0.

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ANALYST BRIEF

Impact, mitigation & remediation

What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.

Impact

What an attacker gets, and what they’ve been doing with it.

Successful exploitation allows a local attacker with the ability to run low-privileged code inside a container to crash the affected Docker Desktop VM, causing a denial-of-service condition. The available information indicates high availability impact, with no stated confidentiality or integrity impact.

Mitigation

If you can’t patch tonight, do this now.

If immediate upgrade is not possible, reduce exposure by limiting untrusted or low-privileged code execution inside containers on affected Docker Desktop systems and avoiding workflows that allow containers to create deeply nested directory structures on bind-mounted host folders. Prioritize restricting access to bind mounts until the fixed version can be deployed. Specific vendor mitigation guidance beyond upgrading was not provided in the available content.

Remediation

Patch, then assume compromise.

Upgrade Docker Desktop to version 4.76.0 or later, which contains the fix for the unbounded recursion issue in the grpcfuse kernel module.
PUBLIC EXPLOITS

Exploits

No public exploits tracked yet. Mallory keeps watching.

VALID 0 / 0 TOTALView more in app

No public exploit code observed for this vulnerability.

EXPOSURE SURFACE

Affected products & vendors

Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.

VendorProductType
DockerDocker Desktopapplication

Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.

ACTIVITY FEED

Recent activity

8 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.

8 SOURCESView more in app
What this page doesn’t show

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Exposure mapping

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Threat actor evidence

Every observed campaign linking this CVE to a named adversary.

Associated malware

Malware families riding this exploit, with evidence and IOCs.

Detection signatures

YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.

Vendor-by-vendor mapping

Cross-references every affected SKU, including bundled OEM variants.

Social activity6

Community discussion across Reddit, Mastodon, and other social sources.

EXTERNAL REFERENCES
MITRE CVE
cve.org · CVE-2026-8936
NVD
nvd.nist.gov/vuln/detail/CVE-2026-8936
MITRE CWE · CWE-674
Uncontrolled Recursion
docs.docker.com
docs.docker.com/desktop/release-notes