{"cve":{"cve_id":"CVE-2011-2525","is_kev":false,"kev_date_added":null,"kev_vendor_project":null,"kev_product":null,"kev_vulnerability_name":null,"kev_short_description":null,"kev_required_action":null,"kev_due_date":null,"kev_known_ransomware":null,"kev_notes":null,"kev_cwes":null,"epss_score":0.00496,"epss_percentile":0.38586,"epss_as_of":"2026-06-23","description":"The qdisc_notify function in net/sched/sch_api.c in the Linux kernel before 2.6.35 does not prevent tc_fill_qdisc function calls referencing builtin (aka CQ_F_BUILTIN) Qdisc structures, which allows local users to cause a denial of service (NULL pointer dereference and OOPS) or possibly have unspecified other impact via a crafted call.","published_at":"2012-02-02T02:00:00Z","last_modified_at":"2026-06-16T23:31:30.943000Z","cvss_v3_score":7.8,"cvss_v3_vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","cvss_v3_severity":"HIGH","cvss_v4_score":null,"cvss_v4_vector":null,"cvss_v4_severity":null,"ssvc_decision":null,"ssvc_exploitation":null,"ssvc_automatable":null,"ssvc_technical_impact":null,"cwes":["CWE-476"],"nvd_references":["https://bugzilla.redhat.com/show_bug.cgi?id=720552","http://rhn.redhat.com/errata/RHSA-2011-1065.html","http://kerneltrap.org/mailarchive/linux-netdev/2010/5/21/6277805","http://mirror.anl.gov/pub/linux/kernel/v2.6/ChangeLog-2.6.35","http://rhn.redhat.com/errata/RHSA-2011-1163.html","http://openwall.com/lists/oss-security/2011/07/12/1","http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=53b0f08042f04813cd1a7473dacd3edfacb28eb3"],"vuln_status":"Modified","trending_score":null,"is_trending":false,"has_trended":false,"trended_number_one":false,"trending_peak_score":null,"trending_peak_rank":null,"started_trending_at":null,"trended_number_one_at":null,"summary_generated":null,"summary_generated_at":null,"summary_model":null,"created_at":"2026-06-24T00:09:39.878444Z","updated_at":"2026-06-28T23:05:54.811273Z"},"effective_severity":"HIGH","badges":[],"impact_analysis":[],"cvss_v3_decoded":{"version":"3.1","metrics":[{"metric":"AV","name":"Attack Vector","value":"L","value_label":"Local"},{"metric":"AC","name":"Attack Complexity","value":"L","value_label":"Low"},{"metric":"PR","name":"Privileges Required","value":"L","value_label":"Low"},{"metric":"UI","name":"User Interaction","value":"N","value_label":"None"},{"metric":"S","name":"Scope","value":"U","value_label":"Unchanged"},{"metric":"C","name":"Confidentiality","value":"H","value_label":"High"},{"metric":"I","name":"Integrity","value":"H","value_label":"High"},{"metric":"A","name":"Availability","value":"H","value_label":"High"}]},"cvss_v4_decoded":{"version":null,"metrics":[]},"affected":[{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux-kernel","product_name":"Linux kernel","version_start":null,"version_start_inclusive":null,"version_end":"2.6.35","version_end_inclusive":false,"cpe23_uri":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*"},{"vendor_slug":"redhat","vendor_name":"RedHat","product_slug":"enterprise-linux","product_name":"enterprise_linux","version_start":"4.0","version_start_inclusive":true,"version_end":"4.0","version_end_inclusive":true,"cpe23_uri":"cpe:2.3:o:redhat:enterprise_linux:4.0:*:*:*:*:*:*:*"}],"exploit_refs":[],"news":[],"references":[{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=720552","source_type":"MISC","tags":[]},{"url":"http://rhn.redhat.com/errata/RHSA-2011-1065.html","source_type":"MISC","tags":[]},{"url":"http://kerneltrap.org/mailarchive/linux-netdev/2010/5/21/6277805","source_type":"MISC","tags":[]},{"url":"http://mirror.anl.gov/pub/linux/kernel/v2.6/ChangeLog-2.6.35","source_type":"MISC","tags":[]},{"url":"http://rhn.redhat.com/errata/RHSA-2011-1163.html","source_type":"MISC","tags":[]},{"url":"http://openwall.com/lists/oss-security/2011/07/12/1","source_type":"MAILING_LIST","tags":["mailing-list"]},{"url":"http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=53b0f08042f04813cd1a7473dacd3edfacb28eb3","source_type":"MISC","tags":[]}],"timeline":[{"type":"published","at":"2012-02-02T02:00:00Z","label":"CVE published","source":null},{"type":"cvss_changed","at":"2026-06-24T01:36:54.067521Z","label":"CVSS score revised","source":"nvd"},{"type":"cvss_changed","at":"2026-06-24T01:36:54.067521Z","label":"CVSS score revised","source":"nvd"},{"type":"cvss_changed","at":"2026-06-24T01:36:54.067521Z","label":"CVSS score revised","source":"nvd"}]}