{"id":"CVE-2024-6443","aliases":["EUVD-2024-47542","GHSA-gg46-3rh2-v765","UBUNTU-CVE-2024-6443"],"status":"published","title":"zephyr: out-of-bound read in utf8_trunc","description":"In utf8_trunc in zephyr/lib/utils/utf8.c, last_byte_p can point to one byte before the string pointer if the string is empty.","severity":{"version":"3.1","score":6.3,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00608,"percentile":0.4939,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-125","CWE-787"],"published":"2024-10-04T05:56:30Z","modified":"2026-10-28T02:30:48Z","affected":[{"source":"osv","ecosystem":"Ubuntu:16.04:LTS","package":"zephyr","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.1.2-1","3.1.2-1build1"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"zephyr","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.1.2-1build1","3.1.2-1build2"]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"zephyr","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.1.2-1build3"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"zephyr","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.1.2-1build3"]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"zephyr","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.1.2-1.1","3.1.2-1.1build1"]},{"source":"osv","ecosystem":"Ubuntu:25.10","package":"zephyr","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.1.2-1.1build1"]},{"source":"osv","ecosystem":"Ubuntu:26.10","package":"zephyr","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.1.2-4"]},{"source":"osv","ecosystem":"Ubuntu:26.04:LTS","package":"zephyr","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.1.2-1.1build1","3.1.2-4"]}],"products":[{"vendor":"zephyrproject","product":"zephyr"},{"vendor":"zephyrproject-rtos","product":"zephyr"}],"references":[{"url":"https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-gg46-3rh2-v765","tags":["Exploit","Vendor Advisory","advisory","report"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/6xxx/CVE-2024-6443.json","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2024-6443","tags":["advisory"]},{"url":"https://github.com/zephyrproject-rtos/zephyr","tags":["package"]},{"url":"https://ubuntu.com/security/CVE-2024-6443","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2024-6443","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2024-6443","title":"zephyr: out-of-bound read in utf8_trunc","description":"In utf8_trunc in zephyr/lib/utils/utf8.c, last_byte_p can point to one byte before the string pointer if the string is empty.","status":"published","published":"2024-10-04T05:56:30.135Z","modified":"2024-10-04T13:50:42.76Z","cvss":[{"version":"3.1","score":6.3,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L","level":"medium","assessor":"cna"}],"cwes":["CWE-125","CWE-787"],"updated_at":"2026-11-02T14:34:11.638716Z"}],"euvd":[{"id":"EUVD-2024-47542","description":"In utf8_trunc in zephyr/lib/utils/utf8.c, last_byte_p can point to one byte before the string pointer if the string is empty.","status":"published","published":"2024-10-04T05:56:30Z","modified":"2024-10-04T13:50:42Z","cvss":[{"version":"3.1","score":6.3,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L","level":"medium"}],"updated_at":"2026-11-03T00:27:51.858084Z"}],"nvd":[{"id":"CVE-2024-6443","description":"In utf8_trunc in zephyr/lib/utils/utf8.c, last_byte_p can point to one byte before the string pointer if the string is empty.","status":"published","published":"2024-10-04T06:15:05.16Z","modified":"2026-06-17T08:18:01.77Z","cvss":[{"version":"3.1","score":6.3,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L","level":"medium","assessor":"secondary"},{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"primary"}],"cwes":["CWE-125","CWE-787"],"updated_at":"2026-11-02T14:10:30.673028Z"}],"osv":[{"id":"CVE-2024-6443","title":"zephyr: out-of-bound read in utf8_trunc","description":"In utf8_trunc in zephyr/lib/utils/utf8.c, last_byte_p can point to one byte before the string pointer if the string is empty.","status":"published","published":"2024-10-04T05:56:30.135Z","modified":"2026-10-28T02:30:48.623416641Z","cvss":[{"version":"3.1","score":6.3,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L","level":"medium"}],"cwes":["CWE-125","CWE-787"],"updated_at":"2026-11-02T15:44:45.405014Z"},{"id":"UBUNTU-CVE-2024-6443","description":"In utf8_trunc in zephyr/lib/utils/utf8.c, last_byte_p can point to one byte before the string pointer if the string is empty.","status":"published","published":"2024-10-04T06:15:00Z","modified":"2026-10-17T12:57:00.489861688Z","cvss":[{"version":"3.1","score":6.3,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L","level":"medium"},{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T16:55:18.664792Z"}]}}