{"id":"CVE-2021-34387","aliases":["EUVD-2021-21045","GHSA-89wh-w7hc-jhpc"],"status":"published","title":"The ARM TrustZone Technology on which Trusty is based on contains a vulnerability in access...","description":"The ARM TrustZone Technology on which Trusty is based on contains a vulnerability in access permission settings where the portion of the DRAM reserved for TrustZone is identity-mapped by TLK with read, write, and execute permissions, which gives write access to kernel code and data that is otherwise mapped read only.","severity":{"version":"3.1","score":6.3,"vector":"CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:H","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00205,"percentile":0.10561,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-276"],"published":"2021-06-21T21:35:16Z","modified":"2026-06-17T03:55:45Z","products":[{"vendor":"nvidia","product":"jetson_linux"},{"vendor":"nvidia","product":"nvidia jetson tx1"}],"references":[{"url":"https://nvidia.custhelp.com/app/answers/detail/a_id/5205","tags":["x_refsource_CONFIRM","x_transferred","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-34387"},{"url":"https://github.com/advisories/GHSA-89wh-w7hc-jhpc"}],"sources":{"cve":[{"id":"CVE-2021-34387","description":"The ARM TrustZone Technology on which Trusty is based on contains a vulnerability in access permission settings where the portion of the DRAM reserved for TrustZone is identity-mapped by TLK with read, write, and execute permissions, which gives write access to kernel code and data that is otherwise mapped read only.","status":"published","published":"2021-06-21T21:35:16Z","modified":"2024-08-04T00:12:49.99Z","cvss":[{"version":"3.1","score":6.3,"vector":"CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:H","level":"medium","assessor":"cna"}],"updated_at":"2026-11-02T14:33:11.244759Z"}],"euvd":[{"id":"EUVD-2021-21045","description":"The ARM TrustZone Technology on which Trusty is based on contains a vulnerability in access permission settings where the portion of the DRAM reserved for TrustZone is identity-mapped by TLK with read, write, and execute permissions, which gives write access to kernel code and data that is otherwise mapped read only.","status":"published","published":"2021-06-21T21:35:16Z","modified":"2024-08-04T00:12:49Z","cvss":[{"version":"3.1","score":6.3,"vector":"CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:H","level":"medium"}],"updated_at":"2026-11-03T03:24:32.445199Z"}],"ghsa":[{"id":"GHSA-89wh-w7hc-jhpc","title":"The ARM TrustZone Technology on which Trusty is based on contains a vulnerability in access...","description":"The ARM TrustZone Technology on which Trusty is based on contains a vulnerability in access permission settings where the portion of the DRAM reserved for TrustZone is identity-mapped by TLK with read, write, and execute permissions, which gives write access to kernel code and data that is otherwise mapped read only.","status":"published","published":"2022-05-24T19:05:59Z","modified":"2023-01-29T05:07:06Z","cwes":["CWE-276"],"updated_at":"2026-11-02T14:46:09.170985Z"}],"nvd":[{"id":"CVE-2021-34387","description":"The ARM TrustZone Technology on which Trusty is based on contains a vulnerability in access permission settings where the portion of the DRAM reserved for TrustZone is identity-mapped by TLK with read, write, and execute permissions, which gives write access to kernel code and data that is otherwise mapped read only.","status":"published","published":"2021-06-21T22:15:07.673Z","modified":"2026-06-17T03:55:45.857Z","cvss":[{"version":"3.1","score":6.3,"vector":"CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:H","level":"medium","assessor":"secondary"},{"version":"3.1","score":6.7,"vector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H","level":"medium","assessor":"primary"},{"version":"2.0","score":7.2,"vector":"AV:L/AC:L/Au:N/C:C/I:C/A:C","level":"high","assessor":"primary"}],"cwes":["CWE-276"],"updated_at":"2026-11-02T14:06:54.892562Z"}]}}