CVE-2019-19318 - In the Linux kernel 5.3.11, mounting a crafted btrfs image twice can cause an rwsem_down_write_slowp

CVE-2019-19318

Summary

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,

References

Vulnerable Configurations

cpe:2.3:o:linux:linux_kernel:5.0.21:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.0.21:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.3.11:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.3.11:*:*:*:*:*:*:*
cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*
cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*

CVSS

Base:	2.1 (as of 29-07-2020 - 19:15)
Impact:
Exploitability:

CWE

CWE-416

CAPEC

Access

Vector	Complexity	Authentication
LOCAL	LOW	NONE

Impact

Confidentiality	Integrity	Availability
NONE	NONE	PARTIAL

cvss-vector via4

AV:L/AC:L/Au:N/C:N/I:N/A:P

refmap via4

confirm	https://security.netapp.com/advisory/ntap-20200103-0001/
misc	https://github.com/bobfuzzer/CVE/tree/master/CVE-2019-19318
suse	openSUSE-SU-2020:0336
ubuntu	USN-4414-1

Last major update

29-07-2020 - 19:15

Published

28-11-2019 - 00:15

Last modified

29-07-2020 - 19:15