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TI-2007-04810 Aliases CVE-2007-4990GHSA-c5xh-656p-g98m

The swap_char2b function in X.Org X Font Server (xfs) before 1.0.5 allows…

Priority MEDIUM 46CWE-189Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
— Not recorded in CVSS 2.0
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
Partial · Partial · Partial
Fix status
Partial Red Hat: 12 fixed, 1 without a fix

Attack profile from CVSS 2.0 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-189 and the CVSS impact.

Summary

The swap_char2b function in X.Org X Font Server (xfs) before 1.0.5 allows context-dependent attackers to execute arbitrary code via (1) QueryXBitmaps and (2) QueryXExtents protocol requests with crafted size values that specify an arbitrary number of bytes to be swapped on the heap, which triggers heap corruption.

Why it matters now

EPSS 0.10737 95th percentileScored 2026-11-07
Fix Partial Red Hat: 2 advisoriesRed Hat: 12 fixed, 1 without a fix

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:x.org:x_font_server:*:*:*:*:*:*:*:*up to 1.0.4Vulnerablex.org
  • cpe:2.3:a:x.org:x_font_server:*:*:*:*:*:*:*:* Versions up to 1.0.4 Vulnerable ·x.org

Remediation

Red Hat 2 advisories

  • RHSA-2008:0029 Released 2008-01-18 · Red Hat rating Important
    XFree86 security update
    • Red Hat Desktop version 3 XFree86-100dpi-fonts-4.3.0-126.EL, XFree86-100dpi-fonts-4.3.0-126.EL.i386, XFree86-4.3.0-126.EL +47
    • Red Hat Enterprise Linux AS (Advanced Server) version 2.1 XFree86-100dpi-fonts-4.1.0-86.EL.i386, XFree86-100dpi-fonts-4.1.0-86.EL.ia64, XFree86-4.1.0-86.EL +37
    • Red Hat Enterprise Linux AS version 3 XFree86-100dpi-fonts-4.3.0-126.EL, XFree86-100dpi-fonts-4.3.0-126.EL.i386, XFree86-100dpi-fonts-4.3.0-126.EL.ia64 +47
    • Red Hat Enterprise Linux ES version 2.1 XFree86-100dpi-fonts-4.1.0-86.EL.i386, XFree86-4.1.0-86.EL, XFree86-4.1.0-86.EL.i386 +18
    • Red Hat Enterprise Linux ES version 3 XFree86-100dpi-fonts-4.3.0-126.EL, XFree86-100dpi-fonts-4.3.0-126.EL.i386, XFree86-100dpi-fonts-4.3.0-126.EL.ia64 +47
    • Red Hat Enterprise Linux WS version 2.1 XFree86-100dpi-fonts-4.1.0-86.EL.i386, XFree86-4.1.0-86.EL, XFree86-4.1.0-86.EL.i386 +18
    • Red Hat Enterprise Linux WS version 3 XFree86-100dpi-fonts-4.3.0-126.EL, XFree86-100dpi-fonts-4.3.0-126.EL.i386, XFree86-100dpi-fonts-4.3.0-126.EL.ia64 +47
    • Red Hat Linux Advanced Workstation 2.1 XFree86-100dpi-fonts-4.1.0-86.EL.ia64, XFree86-4.1.0-86.EL, XFree86-4.1.0-86.EL.ia64 +17
  • RHSA-2008:0030 Released 2008-01-17 · Red Hat rating Important
    xorg-x11 security update
    • Red Hat Enterprise Linux AS version 4 xorg-x11-6.8.2-1.EL.33.0.2, xorg-x11-6.8.2-1.EL.33.0.2.i386, xorg-x11-6.8.2-1.EL.33.0.2.ia64 +47
    • Red Hat Enterprise Linux Desktop version 4 xorg-x11-6.8.2-1.EL.33.0.2, xorg-x11-6.8.2-1.EL.33.0.2.i386, xorg-x11-Mesa-libGL-6.8.2-1.EL.33.0.2 +33
    • Red Hat Enterprise Linux ES version 4 xorg-x11-6.8.2-1.EL.33.0.2, xorg-x11-6.8.2-1.EL.33.0.2.i386, xorg-x11-6.8.2-1.EL.33.0.2.ia64 +47
    • Red Hat Enterprise Linux WS version 4 xorg-x11-6.8.2-1.EL.33.0.2, xorg-x11-6.8.2-1.EL.33.0.2.i386, xorg-x11-6.8.2-1.EL.33.0.2.ia64 +47

Vendor assessments

Red Hat

Red Hat rating: Low. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux 5AffectedNo fix planned: Will not fix
Red Hat Desktop version 3Fixed RHSA-2008:0029
Red Hat Enterprise Linux AS (Advanced Server) version 2.1 Fixed RHSA-2008:0029
Red Hat Enterprise Linux AS version 3Fixed RHSA-2008:0029
Red Hat Enterprise Linux AS version 4Fixed RHSA-2008:0030
Red Hat Enterprise Linux Desktop version 4Fixed RHSA-2008:0030
Red Hat Enterprise Linux ES version 2.1Fixed RHSA-2008:0029
Red Hat Enterprise Linux ES version 3Fixed RHSA-2008:0029
Red Hat Enterprise Linux ES version 4Fixed RHSA-2008:0030
Red Hat Enterprise Linux WS version 2.1Fixed RHSA-2008:0029
Red Hat Enterprise Linux WS version 3Fixed RHSA-2008:0029
Red Hat Enterprise Linux WS version 4Fixed RHSA-2008:0030
Red Hat Linux Advanced Workstation 2.1Fixed RHSA-2008:0029

Timeline

  1. 2026-10-02 Threatist record created from CVE-2007-4990
  2. 2026-10-03 Alias added: GHSA-c5xh-656p-g98m

References

Advisory 11

Other 11

  • TI-2007-04422 Integer overflow in the build_range function in X.Org X Font Server (xfs) before 1.0.5… CVSS 2.0MEDIUM 6.8

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences