CVE-2007-3731

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{}

{"affected": [{"affectedData": [{"product": "n/a", "vendor": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}], "source": "secalert@redhat.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:2.6.20:*:*:*:*:*:*:*", "matchCriteriaId": "C6940324-0383-4510-BA55-770E0A6B80B7", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:2.6.21:*:*:*:*:*:*:*", "matchCriteriaId": "50B422D1-6C6E-4359-A169-3EED78A1CF40", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "The Linux kernel 2.6.20 and 2.6.21 does not properly handle an invalid LDT segment selector in %cs (the xcs field) during ptrace single-step operations, which allows local users to cause a denial of service (NULL dereference and OOPS) via certain code that makes ptrace PTRACE_SETREGS and PTRACE_SINGLESTEP requests, related to the TRACE_IRQS_ON function, and possibly related to the arch_ptrace function."}, {"lang": "es", "value": "El kernel de Linux 2.6.20 y 2.6.21 no maneja de forma adecuada un segmento de selecci\u00f3n LDT no v\u00e1lido en %cs (el campo xcs)a lo largo de las operaciones paso-simple ptrace, lo caul permite a usuarios loalces provocar denegaci\u00f3n de servicio (referencia NULL y OOPS) a trav\u00e9s de ciertos c\u00f3digos que realizan las respuestas ptrace PTRACE_SETREGS y PTRACE_SINGLESTEP, relacionado con la funci\u00f3n TRACE_IRQS_ON, y posiblemente relacionado con la funci\u00f3n arch_ptrace."}], "id": "CVE-2007-3731", "lastModified": "2026-06-16T22:42:36.833", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "LOW", "accessVector": "LOCAL", "authentication": "NONE", "availabilityImpact": "COMPLETE", "baseScore": 4.9, "confidentialityImpact": "NONE", "integrityImpact": "NONE", "vectorString": "AV:L/AC:L/Au:N/C:N/I:N/A:C", "version": "2.0"}, "exploitabilityScore": 3.9, "impactScore": 6.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}]}, "published": "2007-09-17T17:17:00.000", "references": [{"source": "secalert@redhat.com", "tags": ["Exploit"], "url": "http://bugzilla.kernel.org/show_bug.cgi?id=8765"}, {"source": "secalert@redhat.com", "url": "http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commitdiff%3Bh=29eb51101c02df517ca64ec472d7501127ad1da8"}, {"source": "secalert@redhat.com", "url": "http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commitdiff%3Bh=a10d9a71bafd3a283da240d2868e71346d2aef6f"}, {"source": "secalert@redhat.com", "url": "http://osvdb.org/37286"}, {"source": "secalert@redhat.com", "url": "http://secunia.com/advisories/26935"}, {"source": "secalert@redhat.com", "url": "http://secunia.com/advisories/26955"}, {"source": "secalert@redhat.com", "url": "http://secunia.com/advisories/26978"}, 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{"affected_release": [{"advisory": "RHSA-2007:0940", "cpe": "cpe:/o:redhat:enterprise_linux:5", "package": "kernel-0:2.6.18-8.1.15.el5", "product_name": "Red Hat Enterprise Linux 5", "release_date": "2007-10-22T00:00:00Z"}], "bugzilla": {"description": "NULL pointer dereference triggered by ptrace", "id": "248324", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=248324"}, "csaw": false, "cwe": "CWE-476", "details": ["The Linux kernel 2.6.20 and 2.6.21 does not properly handle an invalid LDT segment selector in %cs (the xcs field) during ptrace single-step operations, which allows local users to cause a denial of service (NULL dereference and OOPS) via certain code that makes ptrace PTRACE_SETREGS and PTRACE_SINGLESTEP requests, related to the TRACE_IRQS_ON function, and possibly related to the arch_ptrace function."], "name": "CVE-2007-3731", "public_date": "2007-07-15T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2007-3731\nhttps://nvd.nist.gov/vuln/detail/CVE-2007-3731"], "statement": "This issue did not affect the versions of the Linux kernel as shipped with Red Hat Enterprise Linux 2.1, 3, or 4.", "threat_severity": "Moderate"}

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