CVE-2020-15852

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.

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

Last affected

569dbb88e80deb68974ef6fdd6a13edb9d686261

Fixed

cadfad870154e14f745ec845708bc17d166065f2

Database specific

{
    "versions": [
        {
            "introduced": "0"
        },
        {
            "last_affected": "4.13.x"
        }
    ]
}

Type: GIT
Repo: https://github.com/torvalds/linux
Events: Introduced

0 Unknown introduced commit / All previous commits are affected

Fixed

cadfad870154e14f745ec845708bc17d166065f2

Database specific

source

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

unresolved_ranges

[
    {
        "events": [
            {
                "introduced": "5.5"
            },
            {
                "last_affected": "5.7.9"
            }
        ]
    },
    {
        "events": [
            {
                "introduced": "0"
            },
            {
                "last_affected": "4.13.1"
            }
        ]
    },
    {
        "events": [
            {
                "introduced": "5.5"
            },
            {
                "last_affected": "5.7.9"
            }
        ]
    }
]