01 Record

CVE-2021-46992

netfilter: nftables: avoid overflows in nft_hash_buckets()

HighPUBLISHEDCNA: Linux

CNA base score7.8 CVSS v3.xCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

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02 Description

netfilter: nftables: avoid overflows in nft_hash_buckets()

03 Exploitation and scoring

Exploitation

Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.

SSVC decision

ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.26% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 17.8% of scored records. A rank, not a probability.

NVD base score

7.1 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

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

NVD analysis status

Modified. NVD last modified this record on 2026-08-04.

Red Hat severity

Moderate. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published

2024-02-28 08:13Z2 YR AGO

Last updated

2026-08-05 08:45Z1 MO AGO

Reserved

2024-02-27

Assigning CNA

Linux

Record state

PUBLISHED

Severity

High (CVSS 7.8)

CNA CVSS vector

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

Weaknesses

CWE-125Out-of-bounds ReadBase

Data version

5.2

Document digest

27d51b07d8b44c4c6082248e9d6137eb9554a22f1aa5e903bb46cd99a15f469b

05 Affected products

VendorProductVersionsPlatforms

LinuxLinux0ed6389c483dc77cdbdd48de0ca7ce41723dd667 to < 2824cafc6a93792d9ad85939c499161214d84c4b, 0ed6389c483dc77cdbdd48de0ca7ce41723dd667 to < efcd730ddd6f25578bd31bfe703e593e2421d708, 0ed6389c483dc77cdbdd48de0ca7ce41723dd667 to < c77e2ef18167ad334e27610ced9a7f6af5ec1787, 0ed6389c483dc77cdbdd48de0ca7ce41723dd667 to < 72b49dd116ca00a46a11d5a4d8d7987f05ed9cd7, 0ed6389c483dc77cdbdd48de0ca7ce41723dd667 to < 1e8ab479cfbe5751efccedb95afb9b112a5ba475, 0ed6389c483dc77cdbdd48de0ca7ce41723dd667 to < a388d10961ff8578b1a6691945d406c0f33aa71b, 0ed6389c483dc77cdbdd48de0ca7ce41723dd667 to < a54754ec9891830ba548e2010c889e3c8146e449, 4.9—

06 References

git.kernel.orghttps://git.kernel.org/stable/c/2824cafc6a93792d9ad85939c499161214d84c4b
git.kernel.orghttps://git.kernel.org/stable/c/efcd730ddd6f25578bd31bfe703e593e2421d708
git.kernel.orghttps://git.kernel.org/stable/c/c77e2ef18167ad334e27610ced9a7f6af5ec1787
git.kernel.orghttps://git.kernel.org/stable/c/72b49dd116ca00a46a11d5a4d8d7987f05ed9cd7
git.kernel.orghttps://git.kernel.org/stable/c/1e8ab479cfbe5751efccedb95afb9b112a5ba475
git.kernel.orghttps://git.kernel.org/stable/c/a388d10961ff8578b1a6691945d406c0f33aa71b
git.kernel.orghttps://git.kernel.org/stable/c/a54754ec9891830ba548e2010c889e3c8146e449

01 Record index

CVE-2021-46992

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References

02 Records

CVE-2021-46992

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References