CVE-2019-18198

Public Exploit

Description

In the Linux kernel before 5.3.4, a reference count usage error in the fib6_rule_suppress() function in the fib6 suppression feature of net/ipv6/fib6_rules.c, when handling the FIB_LOOKUP_NOREF flag, can be exploited by a local attacker to corrupt memory, aka CID-ca7a03c41753.

Category

7.8
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.14%
Vendor Advisory ubuntu.com Vendor Advisory kernel.org Vendor Advisory kernel.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://github.com/torvalds/linux/commit/ca7a03c4175366a92cee0ccc4fec0038c3266e26 third party advisory patch
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ca7a03c4175366a92cee0ccc4fec0038c3266e26 patch vendor advisory
https://launchpad.net/bugs/1847478 issue tracking exploit third party advisory
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.3.4 release notes vendor advisory
https://usn.ubuntu.com/4161-1/ third party advisory vendor advisory
https://security.netapp.com/advisory/ntap-20191031-0005/ third party advisory

Frequently Asked Questions

What is the severity of CVE-2019-18198?
CVE-2019-18198 has been scored as a high severity vulnerability.
How to fix CVE-2019-18198?
To fix CVE-2019-18198, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2019-18198 being actively exploited in the wild?
It is possible that CVE-2019-18198 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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