CVE-2019-15792

What it is

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() calls fdget(oldfd), then without further checks passes the resulting file* into shiftfs_real_fdget(), which casts file->private_data, a void* that points to a filesystem-dependent type, to a "struct shiftfs_file_info *". As the private_data is not required to be a pointer, an attacker can use this to cause a denial of service or possibly execute arbitrary code.

At a glance

Exploitability

Can be exploited locally on the machine with a low-privilege account. High risk of data tampering, service disruption.

Exploit odds

1.1% chance of exploitation in the next 30 days (EPSS).

Fix

A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

1. 2020-04-24 00:15 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-06-17 02:21 UTC Last updatedMost recent change to the record

Why it ranks here

• Exploited in the wild: no, CISA does not list it.
• Exploit odds: 1.1% in the next 30 days (EPSS).
• Severity: 7.1 HIGH (CVSS).
• Fix: a patch or advisory is linked.

Details

Published

2020-04-24 00:15 UTC

Last modified

2026-06-17 02:21 UTC

Exploit probability

1.1% · EPSS, next 30 days

Weakness

CWE-843

Record status

Modified

Affected

• Linux Kernel 5.0
• Linux Kernel 5.3
• Canonical Ubuntu Linux 18.04
• Canonical Ubuntu Linux 19.04

Attack profile CVSS 3.1 · 7.1

Attack vector

Local

Complexity

Low

Privileges needed

Low

User interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

High

Availability

High

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

Read https://cve-list.com/agent/cve/CVE-2019-15792.md and follow it. Check whether this project is affected by CVE-2019-15792. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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