What is CVE-2021-35039?

CVE-2021-35039 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10. CVE-2021-35039 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2021-35039?

CVE-2021-35039 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-2021-35039?

No patch is currently available for CVE-2021-35039. Monitor the NIST NVD and your Linux distribution's security advisories for updates.

Is CVE-2021-35039 actively exploited?

CVE-2021-35039 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2021-35039

High

kernel/module.c in the Linux kernel before 5.12.14 mishandles Signature Verification, aka CID-0c18f29aae7c. Without CONFIG_MODULE_SIG, verification that a kernel module is signed, for loading via init_module, does not occur for a module.sig_enforce=1 command-line argument.

Package Linux Kernel

Published 2021-07-07

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-347

CVE-2021-35039 is classified as CWE-347

See CWE-347 on MITRE CWE for full details on this weakness type.

References

The following references provide additional information about CVE-2021-35039 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Openwall
http://www.openwall.com/lists/oss-security/2021/07/06/3

Mailing List Third Party Advisory
Debian Security
https://lists.debian.org/debian-lts-announce/2021/10/msg00010.html

Mailing List Third Party Advisory
Security
https://security.netapp.com/advisory/ntap-20210813-0004/

Third Party Advisory
Openwall
https://www.openwall.com/lists/oss-security/2021/07/06/3

Mailing List Third Party Advisory
Kernel patch commit
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.12.14
Patch
Kernel patch commit
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=0c18f29aae7ce3dadd26d8ee3505d07cc982df75
Patch
Kernel patch commit
https://github.com/torvalds/linux/commit/0c18f29aae7ce3dadd26d8ee3505d07cc982df75
Patch

Details

CVE ID CVE-2021-35039

Severity High

CVSS score 7.8 / 10

CVSS version 3.1

Published 2021-07-07

Modified 2024-11-21

KEV No

Patch Awaiting data

Package linux

Frequently asked questions

What is CVE-2021-35039?

CVE-2021-35039 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10 . CVE-2021-35039 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2021-35039?

CVE-2021-35039 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-2021-35039?

No patch is currently available for CVE-2021-35039. Monitor the NIST NVD and your Linux distribution's security advisories for updates.
Is CVE-2021-35039 actively exploited?

No — CVE-2021-35039 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.