Debian LinuxOperating system · Debian
CVE-2015-1256
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedUse-after-free vulnerability in the SVG implementation in Blink, as used in Google Chrome before 43.0.2357.65, allows remote attackers to cause a denial of service or possibly have unspecified other impact via a crafted document that leverages improper handling of a shadow tree for a use element.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · high confidenceUse-after-free vulnerability in the SVG implementation in Blink (Google Chrome prior to 43.0.2357.65) allows remote attackers to cause denial of service or potentially achieve arbitrary code execution via a crafted document that improperly handles a shadow tree for an SVG `<use>` element.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.
NVD · CPE data
Debian LinuxOperating system
= 8.0
ChromeWeb browser
<= 42.0.2311.152CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Network
- Complexity
- Low
- Authentication
- None
- Confidentiality
- Partial
- Integrity
- Partial
- Availability
- Partial
AV:N/AC:L/Au:N/C:P/I:P/A:P
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Check if Google Chrome is installedRun 'which google-chrome' or check common installation paths such as /usr/bin/google-chrome, /opt/google/chrome/google-chrome, or /Applications/Google Chrome.app/Contents/MacOS/Google ChromeAffected if No Google Chrome executable is found, then the user is not affected by this specific Chrome vulnerability
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Determine installed Google Chrome versionRun 'google-chrome --version' or 'google-chrome -version' to obtain the exact version numberAffected if Version number returned is 42.0.2311.152 or lower (e.g., 42.0.2311.135, 41.0.x.x, etc.)
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Compare version against affected rangeCompare the installed version to the known affected range: any version <= 42.0.2311.152Affected if Installed version is 42.0.2311.152 or any earlier version, indicating the vulnerable Blink SVG implementation is present
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Verify SVG use element rendering is possibleThe vulnerability triggers when processing SVG <use> elements in HTML documents; this is enabled by default in Google Chrome's rendering engineAffected if Google Chrome is used to render HTML documents containing SVG content with <use> elements, which is the default behavior
A user is affected if Google Chrome version 42.0.2311.152 or lower is installed and used to render HTML documents containing SVG <use> elements, since the vulnerable SVG shadow tree handling code exists in those versions.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
From vendor dataUpdate Google Chrome to version 43.0.2357.65 or later to patch the vulnerability; apply the update through standard patch management processes.
Fix this in Debian Linux
Scoped from the published advisory
- Consultation2.0 h
- Implementation3.0 h
- Testing2.0 h
- Review / QA1.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $2,272.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2015-1256 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2015-1256 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
- No weaponised exploit code, or anything meant to cause harm
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