What is CVE-2021-46283?

CVE-2021-46283 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10. CVE-2021-46283 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2021-46283?

CVE-2021-46283 has a CVSS score of 5.5 out of 10, rated Medium severity. The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

Is there a patch available for CVE-2021-46283?

No patch is currently available for CVE-2021-46283. Monitor the NIST NVD and your Linux distribution's security advisories for updates.

Is CVE-2021-46283 actively exploited?

CVE-2021-46283 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2021-46283

Medium

nf_tables_newset in net/netfilter/nf_tables_api.c in the Linux kernel before 5.12.13 allows local users to cause a denial of service (NULL pointer dereference and general protection fault) because of the missing initialization for nft_set_elem_expr_alloc. A local user can set a netfilter table expression in their own namespace.

Package Linux Kernel

Published 2022-01-11

Last modified 2024-11-21

CVSS version 3.1

Patch available

Awaiting data

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

Weakness type

CWE-665

CVE-2021-46283 is classified as CWE-665

See CWE-665 on MITRE CWE for full details on this weakness type.

References

The following references provide additional information about CVE-2021-46283 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Kernel.org
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.12.13

Release Notes Vendor Advisory
Syzkaller
https://syzkaller.appspot.com/bug?id=22c3987f75a7b90e238a26b5a5920525c2d1f345

Third Party Advisory
Kernel patch commit
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ad9f151e560b016b6ad3280b48e42fa11e1a5440
Patch

Details

CVE ID CVE-2021-46283

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2022-01-11

Modified 2024-11-21

KEV No

Patch Awaiting data

Package linux

Frequently asked questions

What is CVE-2021-46283?

CVE-2021-46283 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 . CVE-2021-46283 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2021-46283?

CVE-2021-46283 has a CVSS score of 5.5 out of 10, rated Medium severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
Is there a patch available for CVE-2021-46283?

No patch is currently available for CVE-2021-46283. Monitor the NIST NVD and your Linux distribution's security advisories for updates.
Is CVE-2021-46283 actively exploited?

No — CVE-2021-46283 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.