Buffer overflow in the X render (Xrender) extension in X.org X server 6.8.0 up to allows…
Key facts
- Attack vector
- Local
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · None · Partial
- Fix status
- Fixed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA and Red Hat.
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.
Why it matters now
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
Remediation
Red Hat 1 advisory
- RHSA-2006:0451 Released 2006-05-04 · Red Hat rating Importantxorg-x11 security update
- Red Hat Enterprise Linux AS version 4 xorg-x11-6.8.2-1.EL.13.25.1, xorg-x11-6.8.2-1.EL.13.25.1.i386, xorg-x11-6.8.2-1.EL.13.25.1.ia64 +47
- Red Hat Enterprise Linux Desktop version 4 xorg-x11-6.8.2-1.EL.13.25.1, xorg-x11-6.8.2-1.EL.13.25.1.i386, xorg-x11-Mesa-libGL-6.8.2-1.EL.13.25.1 +33
- Red Hat Enterprise Linux ES version 4 xorg-x11-6.8.2-1.EL.13.25.1, xorg-x11-6.8.2-1.EL.13.25.1.i386, xorg-x11-6.8.2-1.EL.13.25.1.ia64 +47
- Red Hat Enterprise Linux WS version 4 xorg-x11-6.8.2-1.EL.13.25.1, xorg-x11-6.8.2-1.EL.13.25.1.i386, xorg-x11-6.8.2-1.EL.13.25.1.ia64 +47
Vendor assessments
Red Hat
Red Hat rating: Important. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux AS version 4 | Fixed | RHSA-2006:0451 |
| Red Hat Enterprise Linux Desktop version 4 | Fixed | RHSA-2006:0451 |
| Red Hat Enterprise Linux ES version 4 | Fixed | RHSA-2006:0451 |
| Red Hat Enterprise Linux WS version 4 | Fixed | RHSA-2006:0451 |
Timeline
- 2026-10-02 Threatist record created from CVE-2006-1526
- 2026-10-03 Alias added: GHSA-h3hm-p5jw-xp4h
References
Patch 4
More x.org X11r6 vulnerabilities
- TI-2004-00826 Multiple vulnerabilities in libXpm for 6.8.1 and earlier, as used in XFree86 and other… CVSS 2.0HIGH 10.0
- TI-2004-00628 Multiple stack-based buffer overflows in (1) xpmParseColors in parse.c, (2)… CVSS 2.0HIGH 7.5
- TI-2004-00629 Multiple integer overflows in (1) the xpmParseColors function in parse.c, (2)… CVSS 2.0HIGH 7.5
- TI-2005-00556 scan.c for LibXPM may allow attackers to execute arbitrary code via a negative… CVSS 2.0HIGH 7.5
- TI-2004-00383 XDM in XFree86 opens a chooserFd TCP socket even when DisplayManager.requestPort is 0… CVSS 2.0HIGH 7.5
- TI-2006-00723 X.Org server (xorg-server) 1.0.0 and later, X11R6.9.0, and X11R7.0 inadvertently treats… CVSS 2.0HIGH 7.2
Sources
- CVE-2006-1526 · CVE Program
- CVE-2006-1526 · NVD
- FIRST EPSS
- GHSA-h3hm-p5jw-xp4h · GitHub Advisory Database · CC BY 4.0
- CVE-2006-1526 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences