What is CVE-2020-15852?

CVE-2020-15852 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10. CVE-2020-15852 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2020-15852?

CVE-2020-15852 has a CVSS score of 7.8 out of 10, rated High severity. The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Is there a patch available for CVE-2020-15852?

No patch is currently available for CVE-2020-15852. Monitor the NIST NVD and your Linux distribution's security advisories for updates.

Is CVE-2020-15852 actively exploited?

CVE-2020-15852 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2020-15852

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.

Package Linux Kernel

Published 2020-07-20

Last modified 2024-11-21

CVSS version 3.1

Patch available

Awaiting data

CVSS 3.1 score

7.8

out of 10

High

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Vector string

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weakness type

CWE-276

CVE-2020-15852 is classified as CWE-276

See CWE-276 on MITRE CWE for full details on this weakness type.

References

The following references provide additional information about CVE-2020-15852 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Openwall
http://www.openwall.com/lists/oss-security/2020/07/21/2

Mailing List Third Party Advisory
Security
https://security.netapp.com/advisory/ntap-20200810-0001/

Third Party Advisory
Kernel patch commit
http://xenbits.xen.org/xsa/advisory-329.html
Patch
Kernel patch commit
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=cadfad870154e14f745ec845708bc17d166065f2
Patch
Kernel patch commit
https://github.com/torvalds/linux/commit/cadfad870154e14f745ec845708bc17d166065f2
Patch

Details

CVE ID CVE-2020-15852

Severity High

CVSS score 7.8 / 10

CVSS version 3.1

Published 2020-07-20

Modified 2024-11-21

KEV No

Patch Awaiting data

Package linux

Frequently asked questions

What is CVE-2020-15852?

CVE-2020-15852 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10 . CVE-2020-15852 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2020-15852?

CVE-2020-15852 has a CVSS score of 7.8 out of 10, rated High severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
Is there a patch available for CVE-2020-15852?

No patch is currently available for CVE-2020-15852. Monitor the NIST NVD and your Linux distribution's security advisories for updates.
Is CVE-2020-15852 actively exploited?

No — CVE-2020-15852 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.