What is CVE-2021-37576?

CVE-2021-37576 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10, classified as a Out-of-bounds Write flaw (CWE-787). CVE-2021-37576 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2021-37576?

CVE-2021-37576 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-2021-37576?

No patch is currently available for CVE-2021-37576. Monitor the NIST NVD and your Linux distribution's security advisories for updates.

Is CVE-2021-37576 actively exploited?

CVE-2021-37576 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is Out-of-bounds Write (CWE-787)?

The product writes data past the end or before the beginning of the intended buffer. See MITRE CWE for full details: https://cwe.mitre.org/data/definitions/787.html

CVE-2021-37576

High

arch/powerpc/kvm/book3s_rtas.c in the Linux kernel through 5.13.5 on the powerpc platform allows KVM guest OS users to cause host OS memory corruption via rtas_args.nargs, aka CID-f62f3c20647e.

Package Linux Kernel

Published 2021-07-26

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-787

CVE-2021-37576 is a Out-of-bounds Write vulnerability

What is Out-of-bounds Write?

The product writes data past the end or before the beginning of the intended buffer. Learn more on MITRE CWE

References

The following references provide additional information about CVE-2021-37576 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Lists
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WDFA7DSQIPM7XPNXJBXFWXHJFVUBCAG6/
Lists
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Z2YZ2DNURMYYVDT2NYAFDESJC35KCUDS/
Kernel.org
https://lore.kernel.org/linuxppc-dev/87im0x1lqi.fsf%40mpe.ellerman.id.au/T/#u
Security
https://security.netapp.com/advisory/ntap-20210917-0005/

Third Party Advisory
Debian Security
https://www.debian.org/security/2021/dsa-4978

Third Party Advisory
Kernel patch commit
http://www.openwall.com/lists/oss-security/2021/07/27/2
Patch
Kernel patch commit
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=f62f3c20647ebd5fb6ecb8f0b477b9281c44c10a
Patch

Details

CVE ID CVE-2021-37576

Severity High

CVSS score 7.8 / 10

CVSS version 3.1

Published 2021-07-26

Modified 2024-11-21

KEV No

Patch Awaiting data

Package linux

Frequently asked questions

What is CVE-2021-37576?

CVE-2021-37576 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10 , classified as an Out-of-bounds Write flaw (CWE-787) . CVE-2021-37576 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2021-37576?

CVE-2021-37576 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-2021-37576?

No patch is currently available for CVE-2021-37576. Monitor the NIST NVD and your Linux distribution's security advisories for updates.
Is CVE-2021-37576 actively exploited?

No — CVE-2021-37576 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.
What is Out-of-bounds Write (CWE-787)?

The product writes data past the end or before the beginning of the intended buffer. View CWE-787 on MITRE CWE →