CVE-2019-15239 is a use-after-free vulnerability in the Linux kernel's TCP output handling, affecting long-term kernel versions such as 4.9.x before 4.9.190 and 4.14.x before 4.14.139, including Debian distributions. A local attacker can trigger multiple use-after-free conditions by manipulating the write queue during TCP disconnection and re-connection. This vulnerability carries a CVSSv3 score of 7.8 (High), indicating that it can lead to a kernel crash or potentially privilege escalation with low attack complexity and requiring local user privileges. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion surrounding this CVE.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
4.16.12CPE matchmatch criteria | cpe:2.3:o:linux:linux_kernel:4.16.12:*:*:*:*:*:*:* | ||
9.0CPE matchmatch criteria | cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* | ||
10.0CPE matchmatch criteria | cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* |
CVSS version used by this source: 3.0
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.