CVE-2020-15852

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Summary

CVECVE-2020-15852
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2020-07-20 19:15:00 UTC
Updated2022-12-03 14:32:00 UTC
DescriptionAn 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.

Risk And Classification

Problem Types: CWE-276

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Linux Linux Kernel All All All All
Application Netapp Cloud Backup - All All All
Hardware Netapp Solidfire Baseboard Management Controller - All All All
Application Netapp Steelstore Cloud Integrated Storage - All All All
Operating System Xen Xen All All All All

References

ReferenceSourceLinkTags
CVE-2020-15852 Linux Kernel Vulnerability in NetApp Products | NetApp Product Security CONFIRM security.netapp.com
x86/ioperm: Fix io bitmap invalidation on Xen PV · torvalds/linux@cadfad8 · GitHub MISC github.com Patch, Third Party Advisory
kernel/git/torvalds/linux.git - Linux kernel source tree MISC git.kernel.org Mailing List, Patch, Vendor Advisory
XSA-329 - Xen Security Advisories MISC xenbits.xen.org Patch, Third Party Advisory
oss-security - Xen Security Advisory 329 v3 (CVE-2020-15852) - Linux ioperm bitmap context switching issues MLIST www.openwall.com Mailing List, Third Party Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Legacy QID Mappings

  • 180689 Debian Security Update for linux (CVE-2020-15852)
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