What is CVE-2019-15793?

CVE-2019-15793 is a High severity Linux kernel vulnerability with a CVSS score of 8.8 out of 10. CVE-2019-15793 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2019-15793?

CVE-2019-15793 has a CVSS score of 8.8 out of 10, rated High severity. The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H.

Is there a patch available for CVE-2019-15793?

No patch is currently available for CVE-2019-15793. Monitor the NIST NVD and your Linux distribution's security advisories for updates.

Is CVE-2019-15793 actively exploited?

CVE-2019-15793 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2019-15793

High

In shiftfs, a non-upstream patch to the Linux kernel included in the Ubuntu 5.0 and 5.3 kernel series, several locations which shift ids translate user/group ids before performing operations in the lower filesystem were translating them into init_user_ns, whereas they should have been translated into the s_user_ns for the lower filesystem. This resulted in using ids other than the intended ones in the lower fs, which likely did not map into the shifts s_user_ns. A local attacker could use this to possibly bypass discretionary access control permissions.

Package Linux Kernel

Published 2020-04-24

Last modified 2024-11-21

CVSS version 3.1

Patch available

Awaiting data

CVSS 3.1 score

8.8

out of 10

High

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Changed

Confidentiality

High

Integrity

High

Availability

High

Vector string

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

Weakness type

CWE-538

CVE-2019-15793 is classified as CWE-538

See CWE-538 on MITRE CWE for full details on this weakness type.

References

The following references provide additional information about CVE-2019-15793 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=3644b9d5688da86f18e017c9c580b75cf52927bb
Patch

Details

CVE ID CVE-2019-15793

Severity High

CVSS score 8.8 / 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-2019-15793?

CVE-2019-15793 is a High severity Linux kernel vulnerability with a CVSS score of 8.8 out of 10 . CVE-2019-15793 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2019-15793?

CVE-2019-15793 has a CVSS score of 8.8 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:C/C:H/I:H/A:H.
Is there a patch available for CVE-2019-15793?

No patch is currently available for CVE-2019-15793. Monitor the NIST NVD and your Linux distribution's security advisories for updates.
Is CVE-2019-15793 actively exploited?

No — CVE-2019-15793 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.