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CVE-2019-15239

Description

In the Linux kernel, a certain net/ipv4/tcp_output.c change, which was properly incorporated into 4.16.12, was incorrectly backported to the earlier longterm kernels, introducing a new vulnerability that was potentially more severe than the issue that was intended to be fixed by backporting. Specifically, by adding to a write queue between disconnection and re-connection, a local attacker can trigger multiple use-after-free conditions. This can result in a kernel crash, or potentially in privilege escalation. NOTE: this affects (for example) Linux distributions that use 4.9.x longterm kernels before 4.9.190 or 4.14.x longterm kernels before 4.14.139.

Risk Information

Base Score
7.8
MODERATE
Vector
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS Score
Exploitation Probability
0.035

Associated Vulnerability

VulnerabilityOS Platform
(RHSA-2020:0027) kpatch-patch security update kpatch-patch-3_10_0-1062-1-11.el7.x86_64.rpmLinux
(RHSA-2020:0027) kpatch-patch security update kpatch-patch-3_10_0-1062_4_1-1-6.el7.x86_64.rpmLinux
(RHSA-2020:0027) kpatch-patch security update kpatch-patch-3_10_0-1062_4_2-1-3.el7.x86_64.rpmLinux
(RHSA-2020:0027) kpatch-patch security update kpatch-patch-3_10_0-1062_4_3-1-3.el7.x86_64.rpmLinux
(RHSA-2020:0027) kpatch-patch security update kpatch-patch-3_10_0-1062_1_1-1-10.el7.x86_64.rpmLinux
(RHSA-2020:0027) kpatch-patch security update kpatch-patch-3_10_0-1062_1_2-1-9.el7.x86_64.rpmLinux
Dtrace-modules-3.8.13-118.39.1.el6uek update (ELSA-2019-4810) dtrace-modules-3.8.13-118.39.1.el6uek-0.4.5-3.el6.x86_64.rpmLinux
Dtrace-modules-3.8.13-118.39.1.el7uek update (ELSA-2019-4810) dtrace-modules-3.8.13-118.39.1.el7uek-0.4.5-3.el7.x86_64.rpmLinux
(RHSA-2020:0027)Important: security update kpatch-patch-3_10_0-1062-debuginfo-1-11.el7.x86_64.rpmLinux
(RHSA-2020:0027)Important: security update kpatch-patch-3_10_0-1062_1_1-debuginfo-1-10.el7.x86_64.rpmLinux
(RHSA-2020:0027)Important: security update kpatch-patch-3_10_0-1062_1_2-debuginfo-1-9.el7.x86_64.rpmLinux
(RHSA-2020:0027)Important: security update kpatch-patch-3_10_0-1062_4_1-debuginfo-1-6.el7.x86_64.rpmLinux
Use After Free Vulnerability (CVE-2019-15239)NCM

Patch Details

No records found

References

https://nvd.nist.gov/vuln/detail/CVE-2023-1234
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-1234