CVE-2019-15791 Vulnerability Details

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CVE-2019-15791 Metadata Quick Info

CVE Published: 23/04/2020 | CVE Updated: 17/09/2024 | CVE Year: 2019
Source: canonical | Vendor: Ubuntu | Product: Shiftfs in the Linux kernel
Status : PUBLISHED

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CVE-2019-15791 Description

In shiftfs, a non-upstream patch to the Linux kernel included in the Ubuntu 5.0 and 5.3 kernel series, shiftfs_btrfs_ioctl_fd_replace() installs an fd referencing a file from the lower filesystem without taking an additional reference to that file. After the btrfs ioctl completes this fd is closed, which then puts a reference to that file, leading to a refcount underflow.

Metrics

CVSS Version: 3.1 | Base Score: 7.1 HIGH
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H

l➤ Exploitability Metrics:
    Attack Vector (AV)* LOCAL
    Attack Complexity (AC)* LOW
    Privileges Required (PR)* LOW
    User Interaction (UI)* NONE
    Scope (S)* UNCHANGED

l➤ Impact Metrics:
    Confidentiality Impact (C)* NONE
    Integrity Impact (I)* HIGH
    Availability Impact (A)* HIGH

Weakness Enumeration (CWE)

CWE-ID: CWE-672
CWE Name: CWE-672 Operation on a Resource after Expiration or Release
Source: Ubuntu

Common Attack Pattern Enumeration and Classification (CAPEC)

CAPEC-ID:
CAPEC Description:


Source: NVD (National Vulnerability Database).