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CVE-2007-6429: Multiple integer overflows in X.Org Xserver before 1.4.1 allow context-dependent attackers to execute arbitrar

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This month
HIGH 9.3MITIGATEMITIGATEUPGRADE

CVE-2007-6429 is a high-severity flaw (CVSS 9.3) affecting evi, mit-shm, xserver. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Multiple integer overflows in X.Org Xserver before 1.4.1 allow context-dependent attackers to execute arbitrary code via (1) a GetVisualInfo request containing a 32-bit value that is improperly used to calculate an amount of memory for allocation by the EVI extension, or (2) a request containing values related to pixmap size that are improperly used in management of shared memory by the MIT-SHM extension.

Why this priority

  • Critical severity

A fixed release or distro patch exists.

Risk facts

CVSS score9.3 (High)
EPSS exploit chance2.5% (top 15%)
CISA exploited listNo
WeaknessCWE-189, CWE-362
Published2008-01-18
Last modified2026-06-16
Publisher (CNA): MITRE · Vendor: x.org

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Last updated 2026-06-16 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

x.org evi MITIGATE
Affected: all versions
Fixed in: no fixed release known
Safe to downgrade to: no unaffected older release
1. Check installed version
apt-cache policy evi || rpm -q evi || evi --version
No fixed or unaffected release known
Apply the vendor mitigation from the advisory, disable the affected feature, or restrict network access.
x.org mit-shm MITIGATE
Affected: all versions
Fixed in: no fixed release known
Safe to downgrade to: no unaffected older release
1. Check installed version
apt-cache policy mit-shm || rpm -q mit-shm || mit-shm --version
No fixed or unaffected release known
Apply the vendor mitigation from the advisory, disable the affected feature, or restrict network access.
x.org xserver UPGRADE
Affected: <= 1.4
Fixed in: newer than 1.4
Safe to downgrade to: no unaffected older release
1. Check installed version
apt-cache policy xserver || rpm -q xserver || xserver --version
2. UPGRADE to newer than 1.4 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade xserver
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade xserver
Note
Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.
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-2007-6429?

evi: mitigate or apply the listed mitigation; mit-shm: mitigate or apply the listed mitigation; xserver: upgrade to newer than 1.4. Exact commands for each OS are on this page.

Is CVE-2007-6429 being exploited?

CVE-2007-6429 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-2007-6429 affect?

CVE-2007-6429 affects evi, mit-shm, xserver. Severity is high (CVSS 9.3). Multiple integer overflows in X.Org Xserver before 1.4.1 allow context-dependent attackers to execute arbitrary code via (1) a GetVisualInfo request containing a 32-bit value that is improperly used to calculate an amount of memory for allo

How urgent is CVE-2007-6429?

Priority 54/100. Critical severity

References

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