VDB
CVE-2020-15852
CVE-2020-15852
PUBLISHED
CVSS 7.800000190734863 HIGH
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.
EPSS 0.33% · 25.3th percentile
Risk Scores
CVSS 3.1
7.800000190734863
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS Score
0.33%
25.3th percentile
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Ubuntu:18.04:LTS | linux-azure-edge | 0, 4.18.0-1006.6~18.04.1, 4.18.0-1008.8~18.04.1 |
| Ubuntu:18.04:LTS | linux-azure | 4.18.0-1025.27~18.04.1, 4.18.0-1024.25~18.04.1, 4.18.0-1023.24~18.04.1 |
| Ubuntu:20.04:LTS | linux-oem-5.6 | 5.6.0-1011.11, 5.6.0-1010.10, 5.6.0-1008.8 |
| Ubuntu:Pro:14.04:LTS | linux-aws | 4.4.0-1094.99, 4.4.0-1095.100, 4.4.0-1097.102 |
| Ubuntu:18.04:LTS | linux-gcp | 4.15.0-1030.32, 0, 4.15.0-1001.1 |
| Ubuntu:18.04:LTS | linux-aws-5.0 | 5.0.0-1023.26~18.04.1, 5.0.0-1024.27~18.04.1, 5.0.0-1025.28 |
| Ubuntu:16.04:LTS | linux-hwe-edge | 4.11.0-14.20~16.04.1, 4.11.0-13.19~16.04.1, 4.10.0-26.30~16.04.1 |
| Ubuntu:18.04:LTS | linux-gcp-edge | 4.18.0-1004.5~18.04.1, 4.18.0-1006.7~18.04.1, 4.18.0-1007.8~18.04.1 |
| Ubuntu:Pro:14.04:LTS | linux | 3.13.0-133.182, 0, 3.11.0-12.19 |
| Ubuntu:18.04:LTS | linux-hwe-edge | *, 0, 5.0.0-15.16~18.04.1 |
| Ubuntu:18.04:LTS | linux-oracle-5.0 | 5.0.0-1007.12~18.04.1, 5.0.0-1008.13~18.04.1, 5.0.0-1009.14~18.04.1 |
| Ubuntu:18.04:LTS | linux-oracle-5.3 | 5.3.0-1011.12~18.04.1, 5.3.0-1014.15~18.04.1, 5.3.0-1016.18~18.04.1 |
| Ubuntu:20.04:LTS | linux-raspi2 | 5.3.0-1014.16, 5.3.0-1015.17, 5.3.0-1017.19 |
| Ubuntu:18.04:LTS | linux-gcp-5.3 | 5.3.0-1016.17~18.04.1, 5.3.0-1017.18~18.04.1, 5.3.0-1026.28~18.04.1 |
| Ubuntu:Pro:14.04:LTS | linux-lts-xenial | 4.4.0-14.30~14.04.2, *, * |
| Ubuntu:Pro:14.04:LTS | linux-azure | *, *, * |
Timeline
- Jul 20, 2020 CVE Published
- Apr 14, 2021 EPSS Score
- Jun 23, 2021 EPSS Score
- Aug 25, 2021 EPSS Score
- Oct 26, 2021 EPSS Score
- Jan 6, 2022 EPSS Score
- Feb 4, 2022 EPSS Score
- Mar 1, 2022 EPSS Score
- Apr 1, 2022 EPSS Score
- May 3, 2022 EPSS Score
- Jul 4, 2022 EPSS Score
- Sep 6, 2022 EPSS Score
References
- https://ubuntu.com/security/CVE-2020-15852 third-party-advisory
- https://www.openwall.com/lists/oss-security/2020/07/16/1 third-party-advisory
- http://www.openwall.com/lists/oss-security/2020/07/21/2 third-party-advisory
- http://xenbits.xen.org/xsa/advisory-329.html third-party-advisory
- https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=cadfad870154e14f745ec845708bc17d166065f2 third-party-advisory
- https://github.com/torvalds/linux/commit/cadfad870154e14f745ec845708bc17d166065f2 third-party-advisory
- https://www.cve.org/CVERecord?id=CVE-2020-15852 third-party-advisory