Debian LinuxOperating system · Debian
CVE-2011-5326
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 · uneditedimlib2 before 1.4.9 allows remote attackers to cause a denial of service (divide-by-zero error and application crash) by drawing a 2x1 ellipse.
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 confidenceimlib2 before version 1.4.9 contains a divide-by-zero vulnerability in the ellipse drawing function. When a 2x1 ellipse is drawn, the flawed calculation results in a division by zero, causing the application to crash. This is a denial-of-service vulnerability exploitable remotely.
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
= 7.0= 8.0<= 1.4.8CVSS 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
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- None
- Availability
- High
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
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 imlib2 library is installedOn Debian-based systems, run: dpkg -l | grep imlib2. On other systems, check for the library file in common paths such as /usr/lib/libimlib2.so or /usr/lib64/libimlib2.soAffected if imlib2 is not installed means not affected; if installed, proceed to version check
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Retrieve installed imlib2 versionOn Debian systems, run: dpkg -s imlib2 and look for the Version field. Alternatively, use: pkg-config --modversion imlib2 if pkg-config is availableAffected if Only continue if imlib2 version is successfully obtained from the system
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Compare version to affected rangeCompare the installed version number to 1.4.9. Any version less than 1.4.9 (such as 1.4.8, 1.4.7, 1.4.6, 1.4.5, etc.) falls within the affected rangeAffected if Installed version is less than 1.4.9 (for example, 1.4.8 or any earlier version)
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Confirm specific distribution and version if applicableIf running Debian, check the release with: cat /etc/debian_version. Debian 7.0 and Debian 8.0 shipped with imlib2 versions in the affected rangeAffected if Running Debian 7.0 or Debian 8.0 with imlib2 installed (these releases included affected imlib2 versions)
The environment is affected if imlib2 is installed and the version is below 1.4.9, particularly on Debian 7.0 or 8.0 systems
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 dataUpgrade imlib2 to version 1.4.9 or later. This is a library update that should be tested to ensure image rendering functionality remains intact after the upgrade.
Fix this in Debian Linux
Scoped from the published advisory
- Consultation1.0 h
- Implementation2.0 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 $1,664.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2011-5326 — 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-2011-5326 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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A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.
- 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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