What is CVE-2018-21008?

CVE-2018-21008 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, classified as a Use After Free flaw (CWE-416). CVE-2018-21008 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2018-21008?

CVE-2018-21008 has a CVSS score of 5.5 out of 10, rated Medium severity. The vector string is CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

Is there a patch available for CVE-2018-21008?

No patch is currently available for CVE-2018-21008. Monitor the NIST NVD and your Linux distribution's security advisories for updates.

Is CVE-2018-21008 actively exploited?

CVE-2018-21008 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is Use After Free (CWE-416)?

The product references memory after it has been freed, which may cause it to crash, use unexpected values, or execute code. See MITRE CWE for full details: https://cwe.mitre.org/data/definitions/416.html

CVE-2018-21008

Medium

An issue was discovered in the Linux kernel before 4.16.7. A use-after-free can be caused by the function rsi_mac80211_detach in the file drivers/net/wireless/rsi/rsi_91x_mac80211.c.

Package Linux Kernel

Published 2019-09-04

Last modified 2024-11-21

CVSS version 3.0

Patch available

Awaiting data

CVSS 3.0 score

5.5

out of 10

Medium

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

High

Vector string

CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Weakness type

CWE-416

CVE-2018-21008 is a Use After Free vulnerability

What is Use After Free?

The product references memory after it has been freed, which may cause it to crash, use unexpected values, or execute code. Learn more on MITRE CWE

References

The following references provide additional information about CVE-2018-21008 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Lists
http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00064.html
Lists
http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00066.html
Packet Storm
http://packetstormsecurity.com/files/154951/Kernel-Live-Patch-Security-Notice-LSN-0058-1.html
Kernel.org
https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.16.7

Mailing List Vendor Advisory
Debian Security
https://lists.debian.org/debian-lts-announce/2019/09/msg00025.html
Debian Security
https://lists.debian.org/debian-lts-announce/2020/03/msg00001.html
Security
https://security.netapp.com/advisory/ntap-20191004-0001/
Ubuntu Security
https://usn.ubuntu.com/4162-1/
Ubuntu Security
https://usn.ubuntu.com/4162-2/
Ubuntu Security
https://usn.ubuntu.com/4163-1/
Ubuntu Security
https://usn.ubuntu.com/4163-2/
Kernel patch commit
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=abd39c6ded9db53aa44c2540092bdd5fb6590fa8
Patch

Details

CVE ID CVE-2018-21008

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.0

Published 2019-09-04

Modified 2024-11-21

KEV No

Patch Awaiting data

Package linux

Frequently asked questions

What is CVE-2018-21008?

CVE-2018-21008 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 , classified as an Use After Free flaw (CWE-416) . CVE-2018-21008 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2018-21008?

CVE-2018-21008 has a CVSS score of 5.5 out of 10, rated Medium severity (CVSS 3.0). The vector string is CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
Is there a patch available for CVE-2018-21008?

No patch is currently available for CVE-2018-21008. Monitor the NIST NVD and your Linux distribution's security advisories for updates.
Is CVE-2018-21008 actively exploited?

No — CVE-2018-21008 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.
What is Use After Free (CWE-416)?

The product references memory after it has been freed, which may cause it to crash, use unexpected values, or execute code. View CWE-416 on MITRE CWE →