{"vulnerability": "CVE-2021-23134", "sightings": [{"uuid": "6397abb9-c26b-4aef-881f-e99182d1fd53", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2021-23134", "type": "published-proof-of-concept", "source": "https://t.me/linkersec/150", "content": "Linux kernel Use-After-Free (CVE-2021-23134) PoC\n\nAn article by @Awarau1 about exploiting a use-after-free in NFC sockets to leak /etc/shadow.\n\nAmusingly, uses TeX formatting on web to explain the exploit.", "creation_timestamp": "2022-02-22T00:26:27.000000Z"}, {"uuid": "4c42a54c-d908-46be-bbb9-4e6786744a30", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2021-23134", "type": "seen", "source": "https://t.me/reconshell/703", "content": "CVE-2021-23134\n\nUse After Free vulnerability in nfc sockets in the Linux Kernel before 5.12.2 allows local attackers to elevate their privileges\n\nRead More : https://cve.reconshell.com/cve/CVE-2021-23134", "creation_timestamp": "2021-05-16T07:45:34.000000Z"}, {"uuid": "bab3c07a-67bb-41ea-98e3-ccb341f64f4d", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2021-23134", "type": "seen", "source": "https://t.me/reverseame/2144", "content": "Linux kernel Use-After-Free (CVE-2021-23134) PoC https://ruia-ruia.github.io/NFC-UAF/", "creation_timestamp": "2026-07-30T01:01:55.406773Z"}, {"uuid": "af914f41-9cfd-4a7f-9b12-2b3b6ea6535b", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2021-23134", "type": "published-proof-of-concept", "source": "https://t.me/reverseame/2144", "content": "Linux kernel Use-After-Free (CVE-2021-23134) PoC https://ruia-ruia.github.io/NFC-UAF/", "creation_timestamp": "2026-08-03T02:13:40.548625Z"}, {"uuid": "b8141a30-2d8e-45de-b978-bd927ce33ae9", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2021-23134", "type": "published-proof-of-concept", "source": "https://t.me/CyberSecurityTechnologies/5470", "content": "#Threat_Research\n1. SMS PVA Services' Use of Infected Android Phones Reveals Flaws in SMS Verification\nhttps://www.trendmicro.com/en/research/22/b/sms-pva-services-use-of-infected-android-phones-reveals-flaws-in-sms-verification.html\n2. Linux kernel UAF (CVE-2021-23134) PoC\nhttps://ruia-ruia.github.io/NFC-UAF", "creation_timestamp": "2022-02-22T12:04:12.000000Z"}, {"uuid": "7d617666-8c86-4b1d-b7a7-a30fcb965af5", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2021-23134", "type": "published-proof-of-concept", "source": "https://t.me/reverseame/2144", "content": "Linux kernel Use-After-Free (CVE-2021-23134) PoC https://ruia-ruia.github.io/NFC-UAF/", "creation_timestamp": "2026-08-04T00:00:53.717721Z"}, {"uuid": "034028ce-90d9-4b79-9605-e769d67a62e4", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2021-23134", "type": "published-proof-of-concept", "source": "https://t.me/i_odmin/2768", "content": "\u042d\u043a\u0441\u043f\u0435\u0440\u0438\u043c\u0435\u043d\u0442\u0430\u043b\u044c\u043d\u0430\u044f \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u043a\u0430 \u044d\u043a\u0441\u043f\u043b\u043e\u0439\u0442\u0430 \u0434\u043b\u044f Use-After-Free\n\u041f\u043e\u0448\u0430\u0433\u043e\u0432\u0430\u044f \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u044f \u044d\u043a\u0441\u043f\u043b\u043e\u0439\u0442\u0430 \u0434\u043b\u044f \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438 CVE-2021-23134, \u0432\u043a\u043b\u044e\u0447\u0430\u044f \u043e\u043f\u0438\u0441\u0430\u043d\u0438\u0435 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u0435\u043c\u044b\u0445 \u0434\u043b\u044f \u044d\u0442\u043e\u0433\u043e \u0438\u043d\u0441\u0442\u0440\u0443\u043c\u0435\u043d\u0442\u043e\u0432. \u042d\u0442\u043e \u043c\u043e\u0439 \u043f\u0435\u0440\u0432\u044b\u0439 \u043e\u043f\u044b\u0442 \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u043a\u0438 \u044d\u043a\u0441\u043f\u043b\u043e\u0439\u0442\u0430 \u0434\u043b\u044f \u044f\u0434\u0440\u0430 \u2013 \u0442\u0430\u043a \u0447\u0442\u043e \u0437\u0434\u0435\u0441\u044c \u0432\u044b \u0432\u043f\u043e\u043b\u043d\u0435 \u043c\u043e\u0436\u0435\u0442\u0435 \u0437\u0430\u043c\u0435\u0442\u0438\u0442\u044c \u043d\u0435\u043a\u043e\u0442\u043e\u0440\u044b\u0435 \u043e\u0448\u0438\u0431\u043a\u0438, \u0437\u0430 \u043a\u043e\u0442\u043e\u0440\u044b\u0435 \u044f \u0437\u0430\u0440\u0430\u043d\u0435\u0435 \u0438\u0437\u0432\u0438\u043d\u044f\u044e\u0441\u044c.\nRus https://habr.com/ru/company/ruvds/blog/653957/\nEng https://ruia-ruia.github.io/NFC-UAF/\n\u041a\u043e\u0434 https://github.com/Ruia-ruia/NFC-UAF-exploit-2021/", "creation_timestamp": "2026-08-20T00:00:28.655628Z"}, {"uuid": "b9e174d3-36b7-4df0-9b65-18408478d85a", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2021-23134", "type": "seen", "source": "https://t.me/i_odmin/2768", "content": "\u042d\u043a\u0441\u043f\u0435\u0440\u0438\u043c\u0435\u043d\u0442\u0430\u043b\u044c\u043d\u0430\u044f \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u043a\u0430 \u044d\u043a\u0441\u043f\u043b\u043e\u0439\u0442\u0430 \u0434\u043b\u044f Use-After-Free\n\u041f\u043e\u0448\u0430\u0433\u043e\u0432\u0430\u044f \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u044f \u044d\u043a\u0441\u043f\u043b\u043e\u0439\u0442\u0430 \u0434\u043b\u044f \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438 CVE-2021-23134, \u0432\u043a\u043b\u044e\u0447\u0430\u044f \u043e\u043f\u0438\u0441\u0430\u043d\u0438\u0435 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u0435\u043c\u044b\u0445 \u0434\u043b\u044f \u044d\u0442\u043e\u0433\u043e \u0438\u043d\u0441\u0442\u0440\u0443\u043c\u0435\u043d\u0442\u043e\u0432. \u042d\u0442\u043e \u043c\u043e\u0439 \u043f\u0435\u0440\u0432\u044b\u0439 \u043e\u043f\u044b\u0442 \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u043a\u0438 \u044d\u043a\u0441\u043f\u043b\u043e\u0439\u0442\u0430 \u0434\u043b\u044f \u044f\u0434\u0440\u0430 \u2013 \u0442\u0430\u043a \u0447\u0442\u043e \u0437\u0434\u0435\u0441\u044c \u0432\u044b \u0432\u043f\u043e\u043b\u043d\u0435 \u043c\u043e\u0436\u0435\u0442\u0435 \u0437\u0430\u043c\u0435\u0442\u0438\u0442\u044c \u043d\u0435\u043a\u043e\u0442\u043e\u0440\u044b\u0435 \u043e\u0448\u0438\u0431\u043a\u0438, \u0437\u0430 \u043a\u043e\u0442\u043e\u0440\u044b\u0435 \u044f \u0437\u0430\u0440\u0430\u043d\u0435\u0435 \u0438\u0437\u0432\u0438\u043d\u044f\u044e\u0441\u044c.\nRus https://habr.com/ru/company/ruvds/blog/653957/\nEng https://ruia-ruia.github.io/NFC-UAF/\n\u041a\u043e\u0434 https://github.com/Ruia-ruia/NFC-UAF-exploit-2021/", "creation_timestamp": "2026-08-19T07:00:03.729453Z"}, {"uuid": "998e165c-97b0-4fa5-8cc2-0cf51a49a9c4", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2021-23134", "type": "seen", "source": "https://t.me/reverseame/2144", "content": "Linux kernel Use-After-Free (CVE-2021-23134) PoC https://ruia-ruia.github.io/NFC-UAF/", "creation_timestamp": "2026-07-29T12:02:45.094152Z"}]}