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Fencer Vulns
low 2.1

CVE-2006-1526 json

Buffer overflow in the X render (Xrender) extension in X.org X server 6.8.0 up to allows attackers to cause a denial of service (crash), as…

published 2006-05-02 20 y ago modified 2026-06-16 4 mo ago also EUVD-2006-1530

cvss
2.1
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.5%
EPSS 0.5% chance of exploitation in 30 days, percentile 44%
public exploits
0
none known

Summary

Buffer overflow in the X render (Xrender) extension in X.org X server 6.8.0 up to allows attackers to cause a denial of service (crash), as demonstrated by the (1) XRenderCompositeTriStrip and (2) XRenderCompositeTriFan requests in the rendertest from XCB xcb/xcb-demo, which leads to an incorrect memory allocation due to a typo in an expression that uses a "&" instead of a "*" operator. NOTE: the subject line of the original announcement used an incorrect CVE number for this issue.

Patch / fix

  • xorg-server Debian 14, Debian 13, Debian 12 1:1.0.2-8

debian advisories DEBIAN-CVE-2006-1526

  • xorg-x11 RHEL 4 6.8.2-1.EL.13.25.1
  • xorg-x11-sdk RHEL 4 6.8.2-1.EL.13.25.1
  • xorg-x11-twm RHEL 4 6.8.2-1.EL.13.25.1
  • xorg-x11-xdm RHEL 4 6.8.2-1.EL.13.25.1
  • xorg-x11-xfs RHEL 4 6.8.2-1.EL.13.25.1
  • xorg-x11-libs RHEL 4 6.8.2-1.EL.13.25.1
  • xorg-x11-Xdmx RHEL 4 6.8.2-1.EL.13.25.1
  • xorg-x11-Xvfb RHEL 4 6.8.2-1.EL.13.25.1

red hat advisories RHSA-2006:0451

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2006-1526 updated

security flaw

  • Red Hat Enterprise Linux AS version 4 xorg-x11 6.8.2-1.EL.13.25.1, xorg-x11-sdk 6.8.2-1.EL.13.25.1, xorg-x11-twm 6.8.2-1.EL.13.25.1, xorg-x11-xdm 6.8.2-1.EL.13.25.1, xorg-x11-xfs 6.8.2-1.EL.13.25.1, xorg-x11-libs 6.8.2-1.EL.13.25.1, +9 more Red Hat Enterprise Linux Desktop version 4 xorg-x11 6.8.2-1.EL.13.25.1, xorg-x11-sdk 6.8.2-1.EL.13.25.1, xorg-x11-twm 6.8.2-1.EL.13.25.1, xorg-x11-xdm 6.8.2-1.EL.13.25.1, xorg-x11-xfs 6.8.2-1.EL.13.25.1, xorg-x11-libs 6.8.2-1.EL.13.25.1, +9 more Red Hat Enterprise Linux ES version 4 xorg-x11 6.8.2-1.EL.13.25.1, xorg-x11-sdk 6.8.2-1.EL.13.25.1, xorg-x11-twm 6.8.2-1.EL.13.25.1, xorg-x11-xdm 6.8.2-1.EL.13.25.1, xorg-x11-xfs 6.8.2-1.EL.13.25.1, xorg-x11-libs 6.8.2-1.EL.13.25.1, +9 more Red Hat Enterprise Linux WS version 4 xorg-x11 6.8.2-1.EL.13.25.1, xorg-x11-sdk 6.8.2-1.EL.13.25.1, xorg-x11-twm 6.8.2-1.EL.13.25.1, xorg-x11-xdm 6.8.2-1.EL.13.25.1, xorg-x11-xfs 6.8.2-1.EL.13.25.1, xorg-x11-libs 6.8.2-1.EL.13.25.1, +9 more
    fixed: vendor fix RHSA-2006:0451

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

0.53% chance of exploitation in the next 30 days, higher than 44% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 2.0 2.1 AV:L/AC:L/Au:N/C:N/I:N/A:P

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.