CVE-2019-19318

Public Exploit

Description

In the Linux kernel 5.3.11, mounting a crafted btrfs image twice can cause an rwsem_down_write_slowpath use-after-free because (in rwsem_can_spin_on_owner in kernel/locking/rwsem.c) rwsem_owner_flags returns an already freed pointer,

Category

4.4
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.36%
Vendor Advisory opensuse.org Vendor Advisory ubuntu.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://github.com/bobfuzzer/CVE/tree/master/CVE-2019-19318 third party advisory exploit
https://security.netapp.com/advisory/ntap-20200103-0001/ third party advisory
http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00021.html mailing list third party advisory vendor advisory
https://usn.ubuntu.com/4414-1/ third party advisory vendor advisory
https://lists.debian.org/debian-lts-announce/2021/03/msg00010.html third party advisory mailing list

Frequently Asked Questions

What is the severity of CVE-2019-19318?
CVE-2019-19318 has been scored as a medium severity vulnerability.
How to fix CVE-2019-19318?
To fix CVE-2019-19318, 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-2019-19318 being actively exploited in the wild?
It is possible that CVE-2019-19318 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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