Race condition in Linux kernel - CVE-2019-3837

Vulnerability identifier: #VU77322

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-2019-3837

CWE-ID: CWE-362

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 a race condition within the net_dma code in tcp_recvmsg(). A local user can exploit the race and crash the kernel.

Linux kernel
SUSE Linux Enterprise Server
kernel-default
kernel-default-base
kernel-default-devel
kernel-ec2
kernel-ec2-base
kernel-ec2-devel
kernel-source
kernel-syms
kernel-trace
kernel-trace-base
kernel-trace-devel
kernel-xen
kernel-xen-base
kernel-xen-devel

Install updates from vendor's website.

kernel-default - update to 3.0.101-108.138.1
kernel-default-base - update to 3.0.101-108.138.1
kernel-default-devel - update to 3.0.101-108.138.1
kernel-ec2 - update to 3.0.101-108.138.1
kernel-ec2-base - update to 3.0.101-108.138.1
kernel-ec2-devel - update to 3.0.101-108.138.1
kernel-source - update to 3.0.101-108.138.1
kernel-syms - update to 3.0.101-108.138.1
kernel-trace - update to 3.0.101-108.138.1
kernel-trace-base - update to 3.0.101-108.138.1
kernel-trace-devel - update to 3.0.101-108.138.1
kernel-xen - update to 3.0.101-108.138.1
kernel-xen-base - update to 3.0.101-108.138.1
kernel-xen-devel - update to 3.0.101-108.138.1

• https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3837

• Denial of service in Linux kernel
• SUSE update for the Linux Kernel