CVE-2018-14641

moderate-risk
Published 2018-09-18

A security flaw was found in the ip_frag_reasm() function in net/ipv4/ip_fragment.c in the Linux kernel from 4.19-rc1 to 4.19-rc3 inclusive, which can cause a later system crash in ip_do_fragment(). With certain non-default, but non-rare, configuration of a victim host, an attacker can trigger this crash remotely, thus leading to a remote denial-of-service.

Do I need to act?

~
1.4% 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
6
CVSS 6.5/10 Medium
ADJACENT_NETWORK / LOW complexity

Affected Products (3)

Affected Vendors

Linux

References (8)

Third Party Advisory https://access.redhat.com/errata/RHSA-2018:2948
Issue Tracking https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-14641
Patch https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=5d...
Exploit https://seclists.org/oss-sec/2018/q3/248
Third Party Advisory https://access.redhat.com/errata/RHSA-2018:2948
Issue Tracking https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-14641
Patch https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=5d...
Exploit https://seclists.org/oss-sec/2018/q3/248
34
/ 100
moderate-risk
Severity 21/34 · High
Exploitability 4/34 · Minimal
Exposure 9/34 · Low