CVE-2018-10938

high-risk

Published 2018-08-27

A flaw was found in the Linux kernel present since v4.0-rc1 and through v4.13-rc4. A crafted network packet sent remotely by an attacker may force the kernel to enter an infinite loop in the cipso_v4_optptr() function in net/ipv4/cipso_ipv4.c leading to a denial-of-service. A certain non-default configuration of LSM (Linux Security Module) and NetLabel should be set up on a system before an attacker could leverage this flaw.

Do I need to act?

4.4% chance of exploitation in next 30 days

EPSS score — moderate exploit probability

Not on CISA KEV list

No confirmed active exploitation reported to CISA

Patch status unknown

Check vendor advisories for fix availability and mitigation guidance

CVSS 5.9/10 Medium

NETWORK / HIGH complexity

Affected Products (20)

Linux Kernel

Affected Vendors

Debian Linux Canonical

References (18)

Mailing List http://seclists.org/oss-sec/2018/q3/179

Third Party Advisory http://www.securityfocus.com/bid/105154

Third Party Advisory http://www.securitytracker.com/id/1041569

Issue Tracking https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-10938

Mailing List https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=40...

Mailing List https://lists.debian.org/debian-lts-announce/2018/10/msg00003.html

Third Party Advisory https://usn.ubuntu.com/3797-1/

Third Party Advisory https://usn.ubuntu.com/3797-2/

Third Party Advisory https://www.debian.org/security/2018/dsa-4308