CVE-2020-15852

HIGH

7.8

Description

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.

CVE Details

CVSS v3.1 Score7.8

SeverityHIGH

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

Attack VectorLOCAL

ComplexityLOW

Privileges RequiredLOW

User InteractionNONE

Published7/20/2020

Last Modified11/21/2024

Sourcenvd

Honeypot Sightings0

Affected Products

linux:linux_kernelnetapp:cloud_backupnetapp:solidfire_baseboard_management_controllernetapp:steelstore_cloud_integrated_storagexen:xen

Weaknesses (CWE)

CWE-276

References

http://www.openwall.com/lists/oss-security/2020/07/21/2(cve@mitre.org)

http://xenbits.xen.org/xsa/advisory-329.html(cve@mitre.org)

https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=cadfad870154e14f745ec845708bc17d166065f2(cve@mitre.org)

https://github.com/torvalds/linux/commit/cadfad870154e14f745ec845708bc17d166065f2(cve@mitre.org)

https://security.netapp.com/advisory/ntap-20200810-0001/(cve@mitre.org)

http://www.openwall.com/lists/oss-security/2020/07/21/2(af854a3a-2127-422b-91ae-364da2661108)

http://xenbits.xen.org/xsa/advisory-329.html(af854a3a-2127-422b-91ae-364da2661108)

https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=cadfad870154e14f745ec845708bc17d166065f2(af854a3a-2127-422b-91ae-364da2661108)

https://github.com/torvalds/linux/commit/cadfad870154e14f745ec845708bc17d166065f2(af854a3a-2127-422b-91ae-364da2661108)

https://security.netapp.com/advisory/ntap-20200810-0001/(af854a3a-2127-422b-91ae-364da2661108)

IOC Correlations

No correlations recorded

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