[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"repo-stars":3,"vuln-DEBIAN-CVE-2023-52439":6},{"stargazers_count":4,"fetched_at":5},7,"2026-06-04T08:53:30.047Z",{"id":7,"descriptions":8,"cisa":9,"weaknesses":10,"exploits":11,"aliases":12,"duplicate_of":9,"upstream":13,"downstream":16,"duplicates":21,"related":22,"reserved_at":9,"published_at":23,"modified_at":24,"state":9,"summary":25,"references_raw":27,"kevs":34,"epss":9,"epss_history":35,"metrics":36,"affected":43},"DEBIAN-CVE-2023-52439","In the Linux kernel, the following vulnerability has been resolved:  uio: Fix use-after-free in uio_open  core-1\t\t\t\tcore-2 ------------------------------------------------------- uio_unregister_device\t\tuio_open \t\t\t\tidev = idr_find() device_unregister(&idev->dev) put_device(&idev->dev) uio_device_release \t\t\t\tget_device(&idev->dev) kfree(idev) uio_free_minor(minor) \t\t\t\tuio_release \t\t\t\tput_device(&idev->dev) \t\t\t\tkfree(idev) -------------------------------------------------------  In the core-1 uio_unregister_device(), the device_unregister will kfree idev when the idev->dev kobject ref is 1. But after core-1 device_unregister, put_device and before doing kfree, the core-2 may get_device. Then: 1. After core-1 kfree idev, the core-2 will do use-after-free for idev. 2. When core-2 do uio_release and put_device, the idev will be double    freed.  To address this issue, we can get idev atomic & inc idev reference with minor_lock.",null,[],[],[],[14],{"_key":15},"CVE-2023-52439",[17,19],{"_key":18},"DLA-3840-1",{"_key":20},"DLA-3841-1",[],[],"2024-02-20T21:15:08.213Z","2026-04-28T20:26:39.405292Z",{"cisa_kev":26,"cisa_ransomware":26,"cisa_vendor":9,"epss_severity":9,"epss_score":9,"severity":9,"severity_score":9,"severity_version":9,"severity_source":9,"severity_vector":9,"severity_status":9},false,[28],{"url":29,"sources":30,"tags":32},"https://security-tracker.debian.org/tracker/CVE-2023-52439",[31],"osv_debian",[33],"Advisory",[],[],[37],{"source":31,"cvss_v2_0":9,"cvss_v3_0":9,"cvss_v3_1":38,"cvss_v4_0":9},{"baseScore":39,"baseSeverity":9,"vectorString":40,"impactScore":41,"exploitabilityScore":42},7.8,"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",9.8,4.6,[44],{"ecosystem":45,"name":46,"vendor":47,"product":46,"cpe_part":9,"purl_type":48,"purl_namespace":47,"purl_name":46,"source":9,"versions":49},"Debian","linux","debian","deb",[50,56,59,62],{"version":51,"is_range":52,"range_type":53,"version_start":9,"version_start_type":9,"version_end":54,"version_end_type":55,"fixed_in":9},"lt5_10_209_1",true,"ecosystem","5.10.209-1","excluding",{"version":57,"is_range":52,"range_type":53,"version_start":9,"version_start_type":9,"version_end":58,"version_end_type":55,"fixed_in":9},"lt6_1_76_1","6.1.76-1",{"version":60,"is_range":52,"range_type":53,"version_start":9,"version_start_type":9,"version_end":61,"version_end_type":55,"fixed_in":9},"lt6_6_13_1","6.6.13-1",{"version":60,"is_range":52,"range_type":53,"version_start":9,"version_start_type":9,"version_end":61,"version_end_type":55,"fixed_in":9}]