CVE-2020-15852

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Source
https://cve.org/CVERecord?id=CVE-2020-15852
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2020-15852.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2020-15852
Downstream
Published
2020-07-20T19:15:11.397Z
Modified
2026-04-16T00:11:21.039731213Z
Severity
  • 7.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
Summary
[none]
Details

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 tssinvalidateio_bitmap mishandling causes a loss of synchronization between the I/O bitmaps of TSS and Xen, aka CID-cadfad870154.

Database specific 
{
    "unresolved_ranges": [
        {
            "cpe": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
            "source": "CPE_FIELD",
            "extracted_events": [
                {
                    "introduced": "5.5"
                },
                {
                    "last_affected": "5.7.9"
                }
            ]
        },
        {
            "cpe": "cpe:2.3:o:xen:xen:*:*:*:*:*:*:x86:*",
            "source": "CPE_FIELD",
            "extracted_events": [
                {
                    "last_affected": "4.13.1"
                }
            ]
        },
        {
            "source": "DESCRIPTION",
            "extracted_events": [
                {
                    "introduced": "5.5"
                },
                {
                    "fixed": "5.7.9"
                }
            ]
        }
    ]
}
References

Affected packages

Git / git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git

Affected ranges

Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
569dbb88e80deb68974ef6fdd6a13edb9d686261
Fixed
cadfad870154e14f745ec845708bc17d166065f2
Database specific 
{
    "source": [
        "DESCRIPTION",
        "REFERENCES"
    ],
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "4.13.x"
        }
    ]
}

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2020-15852.json"

Git / github.com/torvalds/linux

Affected ranges

Type
GIT
Repo
https://github.com/torvalds/linux
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
cadfad870154e14f745ec845708bc17d166065f2
Database specific 
{
    "source": "REFERENCES"
}

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2020-15852.json"