CVE-2014-8098: The GLX extension in XFree86 4.0, X.Org X Window System (aka X11 or X) X11R6.7, and X.Org Server (aka xserver

This month

MEDIUM 6.5WATCHLISTMITIGATEUPGRADEDOWNGRADE

CVE-2014-8098 is a medium-severity flaw (CVSS 6.5) affecting debian linux, x server, xfree86. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The GLX extension in XFree86 4.0, X.Org X Window System (aka X11 or X) X11R6.7, and X.Org Server (aka xserver and xorg-server) before 1.16.3 allows remote authenticated users to cause a denial of service (out-of-bounds read or write) or possibly execute arbitrary code via a crafted length or index value to the (1) __glXDisp_Render, (2) __glXDisp_RenderLarge, (3) __glXDispSwap_VendorPrivate, (4) __glXDispSwap_VendorPrivateWithReply, (5) set_client

Why this priority

EPSS top 8%: very likely to be exploited
On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score	6.5 (Medium)
EPSS exploit chance	5.2% (top 8%)
CISA exploited list	No
Weakness	CWE-119
Published	2014-12-10
Last modified	2026-06-17

Publisher (CNA): Red Hat, Inc. · Vendor: debian · x.org

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2014-12-10 15:59 UTCPublished CVE record published
2026-06-17 00:16 UTCUpdated Record last modified

debian debian linux MITIGATE

Affected: 7.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 7.0

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

x.org x server UPGRADE

Affected: <= 1.16.2.99.901

Fixed in: newer than 1.16.2.99.901

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy x-server || rpm -q x-server || x-server --version

2. UPGRADE to newer than 1.16.2.99.901 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade x-server

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade x-server

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

x.org xfree86 DOWNGRADE

Affected: 4.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 4.0

1. Check installed version

apt-cache policy xfree86 || rpm -q xfree86 || xfree86 --version

2. No fixed release: DOWNGRADE to a release before 4.0 (Debian / Ubuntu)

apt-cache madison xfree86 sudo apt install xfree86=<VERSION_BEFORE_4.0> sudo apt-mark hold xfree86

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list xfree86 sudo dnf downgrade xfree86-<VERSION_BEFORE_4.0> sudo dnf versionlock add xfree86

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

x.org x11 DOWNGRADE

Affected: 6.7

Fixed in: no fixed release known

Safe to downgrade to: a release before 6.7

1. Check installed version

apt-cache policy x11 || rpm -q x11 || x11 --version

2. No fixed release: DOWNGRADE to a release before 6.7 (Debian / Ubuntu)

apt-cache madison x11 sudo apt install x11=<VERSION_BEFORE_6.7> sudo apt-mark hold x11

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list x11 sudo dnf downgrade x11-<VERSION_BEFORE_6.7> sudo dnf versionlock add x11

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2014-8098?

debian linux: mitigate or apply the listed mitigation; x server: upgrade to newer than 1.16.2.99.901; xfree86: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2014-8098 being exploited?

CVE-2014-8098 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2014-8098 affect?

CVE-2014-8098 affects debian linux, x server, xfree86. Severity is medium (CVSS 6.5). The GLX extension in XFree86 4.0, X.Org X Window System (aka X11 or X) X11R6.7, and X.Org Server (aka xserver and xorg-server) before 1.16.3 allows remote authenticated users to cause a denial of service (out-of-bounds read or write) or pos

How urgent is CVE-2014-8098?

Priority 51/100. EPSS top 8%: very likely to be exploited; On your watchlist

Software pages

Debian vulnerabilities

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References

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