CVE-2020-15852

An issue was discovered in the Linux kernel 5.5 through 5.7.9, as used in Xen through 4.13.x for x86 PV guests. An attacker may be granted the I/O port permissions of an unrelated task. This occurs because tss_invalidate_io_bitmap mishandling causes a loss of synchronization between the I/O bitmaps of TSS and Xen, aka CID-cadfad870154.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
7.8 HIGH
LOCAL
LOW
LOW
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
mitreCNA
---
---
CVEADP
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Base Score
CVSS 3.x
EPSS Score
Percentile: 37%
VendorProductVersion
linuxlinux_kernel
5.5 ≤
𝑥
≤ 5.7.9
xenxen
𝑥
≤ 4.13.1
netappcloud_backup
-
netappsteelstore_cloud_integrated_storage
-
netappsolidfire_baseboard_management_controller
-
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
linux
bullseye
5.10.223-1
fixed
buster
not-affected
stretch
not-affected
bullseye (security)
5.10.226-1
fixed
bookworm
6.1.106-3
fixed
bookworm (security)
6.1.112-1
fixed
trixie
6.11.5-1
fixed
sid
6.11.6-1
fixed
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
linux
groovy
not-affected
focal
not-affected
bionic
not-affected
xenial
not-affected
trusty
ignored
linux-aws
groovy
not-affected
focal
not-affected
bionic
not-affected
xenial
not-affected
trusty
ignored
linux-aws-5.0
groovy
dne
focal
dne
bionic
ignored
xenial
dne
trusty
dne
linux-aws-5.3
groovy
dne
focal
dne
bionic
not-affected
xenial
dne
trusty
dne
linux-aws-5.4
groovy
dne
focal
dne
bionic
not-affected
xenial
dne
trusty
dne
linux-aws-hwe
groovy
dne
focal
dne
bionic
dne
xenial
not-affected
trusty
dne
linux-azure
groovy
not-affected
focal
not-affected
bionic
ignored
xenial
not-affected
trusty
ignored
linux-azure-4.15
groovy
dne
focal
dne
bionic
not-affected
xenial
dne
trusty
dne
linux-azure-5.3
groovy
dne
focal
dne
bionic
not-affected
xenial
dne
trusty
dne
linux-azure-5.4
groovy
dne
focal
dne
bionic
not-affected
xenial
dne
trusty
dne
linux-azure-edge
groovy
dne
focal
dne
bionic
ignored
xenial
dne
trusty
dne
linux-gcp
groovy
not-affected
focal
not-affected
bionic
ignored
xenial
not-affected
trusty
dne
linux-gcp-4.15
groovy
dne
focal
dne
bionic
not-affected
xenial
dne
trusty
dne
linux-gcp-5.3
groovy
dne
focal
dne
bionic
ignored
xenial
dne
trusty
dne
linux-gcp-5.4
groovy
dne
focal
dne
bionic
not-affected
xenial
dne
trusty
dne
linux-gcp-edge
groovy
dne
focal
dne
bionic
ignored
xenial
dne
trusty
dne
linux-gke-4.15
groovy
dne
focal
dne
bionic
not-affected
xenial
dne
trusty
dne
linux-gke-5.0
groovy
dne
focal
dne
bionic
not-affected
xenial
dne
trusty
dne
linux-gke-5.3
groovy
dne
focal
dne
bionic
not-affected
xenial
dne
trusty
dne
linux-gke-5.4
groovy
dne
focal
dne
bionic
not-affected
xenial
dne
trusty
dne
linux-gkeop-5.4
groovy
dne
focal
dne
bionic
not-affected
xenial
dne
trusty
dne
linux-hwe
groovy
dne
focal
dne
bionic
not-affected
xenial
not-affected
trusty
dne
linux-hwe-5.4
groovy
dne
focal
dne
bionic
not-affected
xenial
dne
trusty
dne
linux-hwe-5.8
groovy
dne
focal
not-affected
bionic
dne
xenial
dne
trusty
dne
linux-hwe-edge
groovy
dne
focal
dne
bionic
ignored
xenial
ignored
trusty
dne
linux-kvm
groovy
not-affected
focal
not-affected
bionic
not-affected
xenial
not-affected
trusty
dne
linux-lts-trusty
groovy
dne
focal
dne
bionic
dne
xenial
dne
trusty
dne
linux-lts-xenial
groovy
dne
focal
dne
bionic
dne
xenial
dne
trusty
ignored
linux-oem
groovy
dne
focal
dne
bionic
not-affected
xenial
ignored
trusty
dne
linux-oem-5.6
groovy
dne
focal
Fixed 5.6.0-1023.23
released
bionic
dne
xenial
dne
trusty
dne
linux-oem-osp1
groovy
dne
focal
dne
bionic
not-affected
xenial
dne
trusty
dne
linux-oracle
groovy
not-affected
focal
not-affected
bionic
not-affected
xenial
not-affected
trusty
dne
linux-oracle-5.0
groovy
dne
focal
dne
bionic
ignored
xenial
dne
trusty
dne
linux-oracle-5.3
groovy
dne
focal
dne
bionic
ignored
xenial
dne
trusty
dne
linux-oracle-5.4
groovy
dne
focal
dne
bionic
not-affected
xenial
dne
trusty
dne
linux-raspi
groovy
not-affected
focal
not-affected
bionic
dne
xenial
dne
trusty
dne
linux-raspi-5.4
groovy
dne
focal
dne
bionic
not-affected
xenial
dne
trusty
dne
linux-raspi2
groovy
dne
focal
ignored
bionic
not-affected
xenial
not-affected
trusty
dne
linux-raspi2-5.3
groovy
dne
focal
dne
bionic
not-affected
xenial
dne
trusty
dne
linux-riscv
groovy
not-affected
focal
not-affected
bionic
dne
xenial
dne
trusty
dne
linux-snapdragon
groovy
dne
focal
dne
bionic
not-affected
xenial
not-affected
trusty
dne
Common Weakness Enumeration
References
http://www.openwall.com/lists/oss-security/2020/07/21/2
http://xenbits.xen.org/xsa/advisory-329.html
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=cadfad870154e14f745ec845708bc17d166065f2
https://github.com/torvalds/linux/commit/cadfad870154e14f745ec845708bc17d166065f2
https://security.netapp.com/advisory/ntap-20200810-0001/
http://www.openwall.com/lists/oss-security/2020/07/21/2
http://xenbits.xen.org/xsa/advisory-329.html
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=cadfad870154e14f745ec845708bc17d166065f2
https://github.com/torvalds/linux/commit/cadfad870154e14f745ec845708bc17d166065f2
https://security.netapp.com/advisory/ntap-20200810-0001/