4.4

CVE-2019-19318

Exploit

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,

Data is provided by the National Vulnerability Database (NVD)
LinuxLinux Kernel Version5.0.21
LinuxLinux Kernel Version5.3.11
OpensuseLeap Version15.1
CanonicalUbuntu Linux Version14.04 SwEditionesm
CanonicalUbuntu Linux Version16.04 SwEditionlts
CanonicalUbuntu Linux Version18.04 SwEditionlts
DebianDebian Linux Version9.0
NetappActive Iq Unified Manager SwPlatformvmware_vsphere Version >= 9.5
NetappSolidfire Version-
NetappAff A700s Firmware Version-
   NetappAff A700s Version-
NetappFas8300 Firmware Version-
   NetappFas8300 Version-
NetappFas8700 Firmware Version-
   NetappFas8700 Version-
NetappAff A400 Firmware Version-
   NetappAff A400 Version-
NetappH610s Firmware Version-
   NetappH610s Version-
Zu dieser CVE wurde keine CISA KEV oder CERT.AT-Warnung gefunden.
EPSS Metriken
Type Source Score Percentile
EPSS FIRST.org 0.35% 0.571
CVSS Metriken
Source Base Score Exploit Score Impact Score Vector string
nvd@nist.gov 4.4 0.8 3.6
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
nvd@nist.gov 2.1 3.9 2.9
AV:L/AC:L/Au:N/C:N/I:N/A:P
CWE-416 Use After Free

The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.