Memory leak in Linux kernel - CVE-2019-15916

Vulnerability identifier: #VU22569

CSH Severity: Low

CVSS v4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2019-15916

CWE-ID: CWE-401

Exploitation vector: Local access

Exploit availability: No public exploit available

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to memory leak within register_queue_kobjects() function in net/core/net-sysfs.c, which will cause denial of service. A local user can perform a denial of service attack.

Linux kernel
Red Hat Enterprise Linux for ARM 64
Red Hat Enterprise Linux for Power 9
Red Hat Enterprise Linux for IBM System z (Structure A)
Red Hat Enterprise Linux for x86_64 - Extended Update Support
Red Hat Enterprise Linux for IBM z Systems - Extended Update Support
Red Hat Enterprise Linux for Power, big endian - Extended Update Support
Red Hat Enterprise Linux EUS Compute Node
Red Hat Enterprise Linux Server - AUS
Red Hat Enterprise Linux for Power, little endian - Extended Update Support
Red Hat Enterprise Linux Server - TUS
Red Hat Virtualization Host - Extended Update Support 4.2 for RHEL
Red Hat Enterprise Linux for Real Time
Red Hat Enterprise Linux for Real Time for NFV
kernel (Red Hat package)
kernel-alt (Red Hat package)
kernel-rt (Red Hat package)
4769 Developer's Toolkit

Install update from vendor's website.

Linux kernel - update to 5.0.1
kernel (Red Hat package) - update to 3.10.0-957.56.1.el7
kernel-alt (Red Hat package) - update to 4.14.0-115.18.1.el7a
kernel-rt (Red Hat package) - update to 4.18.0-147.rt24.93.el8
4769 Developer's Toolkit - update to 7.3.44

• https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.0.1
• https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=895a5e96dbd6386c8e78e5b78e067dcc67b7f0ab
• https://security.netapp.com/advisory/ntap-20191004-0001/

• Memory leak in Linux kernel
• Red Hat Enterprise Linux 8 update for kernel-rt
• Red Hat Enterprise Linux 7 update for kernel-alt
• Red Hat Enterprise Linux 7.6 Extended Update Support update for kernel
• Multiple vulnerabiities in IBM 4769 Developer's Toolkit