{"description":"Trending threats, MITRE ATT\u0026CK coverage, and detection metadata. Fed continuously.","feed_url":"https://feed.craftedsignal.io/tags/permissions/feed.json","home_page_url":"https://feed.craftedsignal.io/","items":[{"_cs_actors":[],"_cs_cpes":[],"_cs_cves":[{"id":"CVE-2026-45932"}],"_cs_exploited":false,"_cs_has_poc":false,"_cs_poc_references":[],"_cs_products":[],"_cs_severities":["medium"],"_cs_tags":["cve","bpf","permissions","microsoft"],"_cs_type":"advisory","_cs_vendors":["Microsoft"],"content_html":"\u003cp\u003eCVE-2026-45932 is a security vulnerability within the bpf (Berkeley Packet Filter) component that necessitates a security update to address improper handling of permissions related to \u0026rsquo;tcx/netkit detach\u0026rsquo; when the program file descriptor (prog fd) is not provided. The vulnerability lies in the incorrect permission checks during the detachment of tcx/netkit components when the \u003ccode\u003eprog fd\u003c/code\u003e parameter is absent. While specific details on exploitation and impact are not provided in the source, successful exploitation could potentially lead to unauthorized resource access or privilege escalation. This requires immediate attention from defenders to patch the affected systems.\u003c/p\u003e\n\u003ch2 id=\"attack-chain\"\u003eAttack Chain\u003c/h2\u003e\n\u003col\u003e\n\u003cli\u003eAn attacker attempts to detach a tcx/netkit component.\u003c/li\u003e\n\u003cli\u003eThe detachment process triggers the bpf component.\u003c/li\u003e\n\u003cli\u003eThe system fails to correctly check permissions due to the absence of a \u003ccode\u003eprog fd\u003c/code\u003e.\u003c/li\u003e\n\u003cli\u003eThe attacker gains unauthorized access or elevated privileges during the detach operation.\u003c/li\u003e\n\u003cli\u003eThe attacker exploits this permission flaw to modify network configurations.\u003c/li\u003e\n\u003cli\u003eThe system grants illegitimate permissions to network resources.\u003c/li\u003e\n\u003c/ol\u003e\n\u003ch2 id=\"impact\"\u003eImpact\u003c/h2\u003e\n\u003cp\u003eDue to the lack of specific details in the source material, the impact of CVE-2026-45932 is not fully known. However, if successfully exploited, this vulnerability could lead to unauthorized resource access and privilege escalation. The extent of the damage depends on the specific system configurations and the privileges granted due to the incorrect permission handling. The consequences could range from minor service disruptions to significant breaches of system integrity.\u003c/p\u003e\n\u003ch2 id=\"recommendation\"\u003eRecommendation\u003c/h2\u003e\n\u003cul\u003e\n\u003cli\u003eApply the security update released by Microsoft to patch CVE-2026-45932 on systems running the affected bpf component.\u003c/li\u003e\n\u003cli\u003eEnable process creation logging to monitor for unexpected bpf activity.\u003c/li\u003e\n\u003cli\u003eDeploy the Sigma rules provided to detect exploitation attempts related to this vulnerability and tune for your environment.\u003c/li\u003e\n\u003c/ul\u003e\n","date_modified":"2026-05-28T07:24:33Z","date_published":"2026-05-28T07:24:33Z","id":"https://feed.craftedsignal.io/briefs/2026-05-cve-2026-45932-bpf-permissions/","summary":"CVE-2026-45932 is a vulnerability affecting the bpf component, related to tcx/netkit detach permissions when the prog fd isn't given, requiring a security update from Microsoft.","title":"CVE-2026-45932 bpf: Fix tcx/netkit Detach Permissions","url":"https://feed.craftedsignal.io/briefs/2026-05-cve-2026-45932-bpf-permissions/"}],"language":"en","title":"CraftedSignal Threat Feed — Permissions","version":"https://jsonfeed.org/version/1.1"}