What is CVE-2019-15791?

CVE-2019-15791 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10. CVE-2019-15791 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2019-15791?

CVE-2019-15791 has a CVSS score of 7.8 out of 10, rated High severity. The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Is there a patch available for CVE-2019-15791?

No patch is currently available for CVE-2019-15791. Monitor the NIST NVD and your Linux distribution's security advisories for updates.

Is CVE-2019-15791 actively exploited?

CVE-2019-15791 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2019-15791

High

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.

Package Linux Kernel

Published 2020-04-24

Last modified 2024-11-21

CVSS version 3.1

Patch available

Awaiting data

CVSS 3.1 score

7.8

out of 10

High

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Vector string

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weakness type

CWE-672

CVE-2019-15791 is classified as CWE-672

See CWE-672 on MITRE CWE for full details on this weakness type.

References

The following references provide additional information about CVE-2019-15791 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Ubuntu Security
https://usn.ubuntu.com/usn/usn-4183-1

Third Party Advisory
Ubuntu Security
https://usn.ubuntu.com/usn/usn-4184-1

Third Party Advisory
Kernel patch commit
https://git.launchpad.net/~ubuntu-kernel/ubuntu/+source/linux/+git/eoan/commit/?id=601a64857b3d7040ca15c39c929e6b9db3373ec1
Patch

Details

CVE ID CVE-2019-15791

Severity High

CVSS score 7.8 / 10

CVSS version 3.1

Published 2020-04-24

Modified 2024-11-21

KEV No

Patch Awaiting data

Package linux

Frequently asked questions

What is CVE-2019-15791?

CVE-2019-15791 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10 . CVE-2019-15791 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2019-15791?

CVE-2019-15791 has a CVSS score of 7.8 out of 10, rated High severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
Is there a patch available for CVE-2019-15791?

No patch is currently available for CVE-2019-15791. Monitor the NIST NVD and your Linux distribution's security advisories for updates.
Is CVE-2019-15791 actively exploited?

No — CVE-2019-15791 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.