01 Record

CVE-2021-46974

bpf: Fix masking negation logic upon negative dst register

HighPUBLISHEDCNA: Linux

CNA base score7.1 CVSS v3.xCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

View raw JSON

02 Description

bpf: Fix masking negation logic upon negative dst register

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

0.25% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 16.1% of scored records. A rank, not a probability.

NVD base score

5.5 (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:N/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

2024-02-27 18:47Z2 YR AGO

Last updated

2026-08-05 08:45Z1 MO AGO

Reserved

2024-02-27

Assigning CNA

Linux

Record state

PUBLISHED

Severity

High (CVSS 7.1)

CNA CVSS vector

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

Weaknesses

CWE-20Improper Input ValidationClass

Data version

5.2

Document digest

87582683266cfd0f05e426f90f1b3779a937e1cbe9e09d2a7a264a9be9caa98d

05 Affected products

VendorProductVersionsPlatforms

LinuxLinuxae03b6b1c880a03d4771257336dc3bca156dd51b to < 4d542ddb88fb2f39bf7f14caa2902f3e8d06f6ba, f92a819b4cbef8c9527d9797110544b2055a4b96 to < 0e2dfdc74a7f4036127356d42ea59388f153f42c, 979d63d50c0c0f7bc537bf821e056cc9fe5abd38 to < 53e0db429b37a32b8fc706d0d90eb4583ad13848, 979d63d50c0c0f7bc537bf821e056cc9fe5abd38 to < 2cfa537674cd1051a3b8111536d77d0558f33d5d, 979d63d50c0c0f7bc537bf821e056cc9fe5abd38 to < 6eba92a4d4be8feb4dc33976abac544fa99d6ecc, 979d63d50c0c0f7bc537bf821e056cc9fe5abd38 to < 7cf64d8679ca1cb20cf57d6a88bfee79a0922a66, 979d63d50c0c0f7bc537bf821e056cc9fe5abd38 to < b9b34ddbe2076ade359cd5ce7537d5ed019e9807, 078da99d449f64ca04d459cdbdcce513b64173cd, 4.14.113 to < 4.14.233, 4.19.19 to < 4.19.190, 4.20.6 to < 4.21, 5.0—

06 References

git.kernel.orghttps://git.kernel.org/stable/c/4d542ddb88fb2f39bf7f14caa2902f3e8d06f6ba
git.kernel.orghttps://git.kernel.org/stable/c/0e2dfdc74a7f4036127356d42ea59388f153f42c
git.kernel.orghttps://git.kernel.org/stable/c/53e0db429b37a32b8fc706d0d90eb4583ad13848
git.kernel.orghttps://git.kernel.org/stable/c/2cfa537674cd1051a3b8111536d77d0558f33d5d
git.kernel.orghttps://git.kernel.org/stable/c/6eba92a4d4be8feb4dc33976abac544fa99d6ecc
git.kernel.orghttps://git.kernel.org/stable/c/7cf64d8679ca1cb20cf57d6a88bfee79a0922a66
git.kernel.orghttps://git.kernel.org/stable/c/b9b34ddbe2076ade359cd5ce7537d5ed019e9807

01 Record index

CVE-2021-46974

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References

02 Records

CVE-2021-46974

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References