High

Use-after-free in WebRTC in Google Chrome on Linux

IdentifiersCVE-2026-9111CWE-416· Use After Free

CVE-2026-9111 is a critical use-after-free vulnerability in the WebRTC component of Google Chrome affecting Linux versions prior to 148.0.7778.179. The flaw arises from improper lifetime management of memory in WebRTC, allowing freed memory to be reused. According to the provided content, a remote attacker can trigger the condition via a crafted HTML page or malicious website, leading to memory corruption and arbitrary code execution.

For your environment

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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 can result in arbitrary code execution in the context of the affected Chrome process on Linux. The provided content also indicates high confidentiality, integrity, and availability impact, consistent with memory corruption that can be leveraged to fully compromise the browser process and potentially cause denial of service if exploitation is unsuccessful or unstable.

Mitigation

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

If immediate patching is not possible, reduce exposure by restricting use of untrusted websites and HTML content, limiting browser use on vulnerable Linux systems, and applying standard browser hardening measures. Because the attack is delivered via crafted HTML content and requires user interaction, avoiding untrusted links, files, and websites can reduce risk until the official update is installed. These are temporary mitigations only; vendor patching is the definitive fix.

Remediation

Patch, then assume compromise.

Update Google Chrome on Linux to version 148.0.7778.179 or later. The provided content indicates the vulnerability affects versions prior to 148.0.7778.179, so applying the vendor-issued stable channel update remediates the issue.

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

GoogleChromeapplication

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

ACTIVITY FEED

Recent activity

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

11 SOURCESView more in app

malwarebytesNews

May 22, 2026

Update Chrome now: Critical bugs could let attackers run code | Malwarebytes

A critical use-after-free remote code execution vulnerability in Chrome WebRTC on Linux that can be triggered via a crafted HTML page or malicious website.

cyber security newsNews

May 21, 2026

Critical Chrome Vulnerabilities Enables Remote Code Execution Attacks - Patch Now!

A critical use-after-free vulnerability in Chrome WebRTC that could lead to memory corruption and remote code execution via a malicious web page.

cvefeed high severityNews

May 20, 2026

CVE-2026-9111 - Google Chrome WebRTC Use-After-Free Vulnerability

A critical use-after-free vulnerability in WebRTC in Google Chrome on Linux that allows remote code execution via a crafted HTML page.

chrome releases blogNews

May 19, 2026

Chrome Releases: Stable Channel Update for Desktop

A critical use-after-free vulnerability in WebRTC in Google Chrome.

What this page doesn’t show

The version that knows your environment.

This page is what’s public. Mallory adds the parts that aren’t: which of your assets are affected, which adversaries are exploiting it right now, which detections to deploy, and what to do tonight.

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Exposure mapping

Query your assets running an affected version, and investigate the blast radius.

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-2026-9111

NVD

nvd.nist.gov/vuln/detail/CVE-2026-9111

MITRE CWE · CWE-416

Use After Free

Vendor Advisory

chromereleases.googleblog.com/2026/05/stable-channel-update-for-desktop_0841193308.html

Permissions Required

issues.chromium.org/issues/504551032