Linux vulnerabilitiesRanked by how likely they are to be used.

Product6 versions
The short answer

Linux is made by Ubuntu. We track 7 published vulnerabilities listed under that exact name, across 6 versions. None of them is on the list of flaws known to be exploited today. Ubuntu lists newer releases under their own names, such as Linux kernel, so check those pages too.

See the riskiest flaws

We keep watching the known-exploited list.

Other names

Is Linux listed under other names? Yes.

Ubuntu also lists Linux under more specific names, such as Linux kernel. Flaws listed only under those names are counted on their own pages, not here. If you run one of these, open its page for its own exploited flaws.

Known exploited

Which Linux vulnerabilities are being exploited?

This is the list that matters most: flaws criminals are using now.

None of Linux's published vulnerabilities is on the list of flaws known to be exploited today. We keep watching that list.

Exploit likelihood

Which Linux flaws are most likely to be used?

Ranked by the latest exploit-likelihood forecast: the chance each flaw is used in an attack in the next 30 days. A high severity score on its own doesn't tell you that. Flaws shared by many other makers' products are left out.

50% or more10% to 49%Under 10%
  1. 7.5%

    The default configuration of xterm on Debian GNU/Linux sid and possibly Ubuntu enables the allowWindowOps resource, which allows user-assisted attackers to execute arbitrary code or have unspecified other impact via...

    CVSS9.3Published2 Jan 2009
  2. 2.4%

    Buffer overflow in enscript before 1.6.4 has unknown impact and attack vectors, possibly related to the font escape sequence.

    CVSS9.3Published4 Nov 2008
  3. 1.7%

    The ssh-vulnkey tool on Ubuntu Linux 7.04, 7.10, and 8.04 LTS does not recognize authorized_keys lines that contain options, which makes it easier for remote attackers to exploit CVE-2008-0166 by guessing a key that...

    CVSS5.0Published18 May 2008
  4. 1.1%

    system-tools-backends before 2.6.0-1ubuntu1.1 in Ubuntu 8.10, as used by "Users and Groups" in GNOME System Tools, hashes account passwords with 3DES and consequently limits effective password lengths to eight...

    CVSS5.0Published7 May 2009
  5. 0.9%

    The X.Org X wrapper (xserver-wrapper.c) in Debian GNU/Linux and Ubuntu Linux does not properly verify the TTY of a user who is starting X, which allows local users to bypass intended access restrictions by...

    CVSS4.6Published5 Feb 2014
  6. 0.5%

    xvfb-run 1.6.1 in Debian GNU/Linux, Ubuntu, Fedora 10, and possibly other operating systems place the magic cookie (MCOOKIE) on the command line, which allows local users to gain privileges by listing the process and...

    CVSS4.6Published6 May 2009
  7. 0.3%

    The Ubuntu clamav-milter.init script in clamav-milter before 0.95.1+dfsg-1ubuntu1.2 in Ubuntu 9.04 sets the ownership of the current working directory to the clamav account, which might allow local users to bypass...

    CVSS6.8Published11 May 2009
Precursor Intelligence

Running Linux? We'll keep checking.

Looking flaws up one at a time doesn't scale. Tell us what you run once, and we tell you which flaws matter to you, in what order, and keep watching for new ones.

  1. Tell us what you runPick your software from a list, or let us work it out from your website.
  2. We match it to every flawOver 400,000 published flaws, checked against your list.
  3. Ranked by real-world riskA 0 to 100 score, led by evidence criminals are using it.
  4. Told as soon as we knowAn alert by email, in the app or by webhook to your own tools.

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FAQ

Common questions, answered plainly.

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We track 7 published vulnerabilities listed under the name Linux, across 6 versions.

None of Linux's vulnerabilities is on the list of flaws known to be exploited today.

Ubuntu also lists Linux under more specific names, such as Linux kernel. Flaws listed only under those names are counted on their own pages, not here. Open the release you run to see its own list.

Create a Precursor Intelligence account and track Linux. We match it against every published flaw, give each one a risk score from 0 to 100 and keep watching, so you hear about new ones as soon as we know, by email, in the app or by webhook.