PT-2019-4975 · Linux+3 · Linux Kernel+3

Published 2016-03-17 · Updated 2021-07-21 · CVE-2019-11815

Positive Technologies (AI Summary)

CVSS v2.0

9.3

High

Base vector

AV:N/AC:M/Au:N/C:C/I:C/A:C

Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to 5.0.8

Description The issue is caused by a race condition in the rds tcp kill sock function, leading to a use-after-free error related to net namespace cleanup. This can potentially allow a remote attacker to impact the confidentiality, integrity, and availability of protected information. The vulnerability is associated with the Reliable Datagram Socket (RDS) TCP socket implementation in the Linux kernel.

Recommendations For Linux kernel versions prior to 5.0.8, update to version 5.0.8 or later to resolve the issue. As a temporary workaround, consider restricting access to the vulnerable rds tcp kill sock function until a patch is available.

Exploit

Fix

Race Condition

Use After Free

Weakness Enumeration

CWE-362

CWE-416

Related Identifiers

ALT-PU-2016-1262

ALT-PU-2017-1299

ALT-PU-2018-1557

ALT-PU-2019-1139

ALT-PU-2019-1363

ALT-PU-2019-1665

ALT-PU-2019-1666

ALT-PU-2019-1710

BDU:2020-01595

CVE-2019-11815

DLA-1824-1

DSA-4465-1

OPENSUSE-SU-2019:1404-1

OPENSUSE-SU-2019:1479-1

OPENSUSE-SU-2019_1404-1

OPENSUSE-SU-2019_1407-1

OPENSUSE-SU-2019_1479-1

SUSE-SU-2019:1527-1

SUSE-SU-2019:1529-1

SUSE-SU-2019:1530-1

SUSE-SU-2019:1532-1

SUSE-SU-2019:1534-1

SUSE-SU-2019:1535-1

SUSE-SU-2019:1536-1

SUSE-SU-2019:1550-1

SUSE-SU-2019:2430-1

USN-4005-1

USN-4008-1

USN-4008-3

USN-4068-1

USN-4068-2

USN-4118-1

Affected Products

Alt Linux

Linux Kernel

Suse

Ubuntu

References · 837

• 🔥 https://github.com/torvalds/linux/commit/cb66ddd156203daefb8d71158036b27b0e2caf63 · Exploit
• 🔥 https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=cb66ddd156203daefb8d71158036b27b0e2caf63 · Exploit
• https://ubuntu.com/security/CVE-2019-11085 · Vendor Advisory
• http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00037.html · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2019-11815 · Security Note
• https://ubuntu.com/security/CVE-2019-3900 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2019:1529-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2019-10126 · Vendor Advisory
• http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00043.html · Vendor Advisory
• https://ubuntu.com/security/CVE-2019-15214 · Vendor Advisory
• https://ubuntu.com/security/CVE-2019-11884 · Vendor Advisory
• https://ubuntu.com/security/CVE-2018-13099 · Vendor Advisory
• https://osv.dev/vulnerability/USN-4068-1 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-4118-1 · Vendor Advisory
• https://linux.oracle.com/errata/ELSA-2019-4670.html · Vendor Advisory