Unrated severityNVD Advisory· Published Oct 5, 2007· Updated Jun 16, 2026
CVE-2007-4990
CVE-2007-4990
Description
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.
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LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
2cpe:2.3:a:x.org:x_font_server:*:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:a:x.org:x_font_server:*:*:*:*:*:*:*:*range: <=1.0.4
- (no CPE)range: <1.0.5
Patches
Vulnerability mechanics
References
38- bugs.freedesktop.org/show_bug.cginvd
- bugs.gentoo.org/show_bug.cginvd
- docs.info.apple.com/article.htmlnvd
- h20000.www2.hp.com/bizsupport/TechSupport/Document.jspnvd
- labs.idefense.com/intelligence/vulnerabilities/display.phpnvd
- lists.apple.com/archives/security-announce/2008/Mar/msg00001.htmlnvd
- lists.freedesktop.org/archives/xorg-announce/2007-October/000416.htmlnvd
- secunia.com/advisories/27040nvd
- secunia.com/advisories/27052nvd
- secunia.com/advisories/27060nvd
- secunia.com/advisories/27176nvd
- secunia.com/advisories/27228nvd
- secunia.com/advisories/27240nvd
- secunia.com/advisories/27560nvd
- secunia.com/advisories/28004nvd
- secunia.com/advisories/28514nvd
- secunia.com/advisories/28536nvd
- secunia.com/advisories/28542nvd
- secunia.com/advisories/29420nvd
- security.gentoo.org/glsa/glsa-200710-11.xmlnvd
- sunsolve.sun.com/search/document.donvd
- sunsolve.sun.com/search/document.donvd
- www.mandriva.com/security/advisoriesnvd
- www.novell.com/linux/security/advisories/2007_54_xorg.htmlnvd
- www.redhat.com/support/errata/RHSA-2008-0029.htmlnvd
- www.redhat.com/support/errata/RHSA-2008-0030.htmlnvd
- www.securityfocus.com/archive/1/481432/100/0/threadednvd
- www.securityfocus.com/bid/25898nvd
- www.securitytracker.com/idnvd
- www.vupen.com/english/advisories/2007/3337nvd
- www.vupen.com/english/advisories/2007/3338nvd
- www.vupen.com/english/advisories/2007/3467nvd
- www.vupen.com/english/advisories/2008/0149nvd
- www.vupen.com/english/advisories/2008/0924/referencesnvd
- exchange.xforce.ibmcloud.com/vulnerabilities/36920nvd
- issues.rpath.com/browse/RPL-1756nvd
- oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11599nvd
- www.redhat.com/archives/fedora-package-announce/2007-December/msg00352.htmlnvd
News mentions
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