CVE-2019-19036

Public Exploit

Description

btrfs_root_node in fs/btrfs/ctree.c in the Linux kernel through 5.3.12 allows a NULL pointer dereference because rcu_dereference(root->node) can be zero.

Category

5.5
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 1.14% Top 25%
Vendor Advisory opensuse.org Vendor Advisory ubuntu.com Vendor Advisory ubuntu.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://github.com/bobfuzzer/CVE/tree/master/CVE-2019-19036 third party advisory exploit
https://security.netapp.com/advisory/ntap-20191205-0001/
http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00021.html vendor advisory
https://usn.ubuntu.com/4414-1/ vendor advisory
https://usn.ubuntu.com/4439-1/ vendor advisory

Frequently Asked Questions

What is the severity of CVE-2019-19036?
CVE-2019-19036 has been scored as a medium severity vulnerability.
How to fix CVE-2019-19036?
To fix CVE-2019-19036, 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-2019-19036 being actively exploited in the wild?
It is possible that CVE-2019-19036 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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