{"cve":"CVE-2019-19768","nvd":{"published":"2019-12-12T20:15:17.663","modified":"2026-06-17T02:27:12.880","status":"Modified","description":"In the Linux kernel 5.4.0-rc2, there is a use-after-free (read) in the __blk_add_trace function in kernel/trace/blktrace.c (which is used to fill out a blk_io_trace structure and place it in a per-cpu sub-buffer).","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5},"cwes":["CWE-416"],"references":["http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00039.html","https://bugzilla.kernel.org/show_bug.cgi?id=205711","https://lists.debian.org/debian-lts-announce/2020/06/msg00011.html","https://lists.debian.org/debian-lts-announce/2020/06/msg00012.html","https://lists.debian.org/debian-lts-announce/2020/06/msg00013.html"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T20:59:27.069234358+00:00"},"epss":{"cve":"CVE-2019-19768","score":0.0415,"percentile":0.90863,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}