01 Record

CVE-2021-47606

net: netlink: af_netlink: Prevent empty skb by adding a check on len.

UnratedPUBLISHEDCNA: Linux

CNA base scoreUnratedNo CNA CVSS vector

View raw JSON

02 Description

net: netlink: af_netlink: Prevent empty skb by adding a check on len.

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

0.23% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 14.2% 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 2026-06-17.

Red Hat severity

Low. 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

2024-06-19 14:54Z2 YR AGO

Last updated

2026-05-11 13:57Z3 MO AGO

Reserved

2024-05-24

Assigning CNA

Linux

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

CWE-369Divide By ZeroBase

Data version

5.2

Document digest

c9847a7f7fc5086c1f4b958edac67260fe49fd6971b932b4a1adf8408119fc00

05 Affected products

VendorProductVersionsPlatforms

LinuxLinuxbcbde0d449eda7afa8f63280b165c8300dbd00e2 to < c54a60c8fbaa774f828e26df79f66229a8a0e010, bcbde0d449eda7afa8f63280b165c8300dbd00e2 to < 40cf2e058832d9cfaae98dfd77334926275598b6, bcbde0d449eda7afa8f63280b165c8300dbd00e2 to < 54e785f7d5c197bc06dbb8053700df7e2a093ced, bcbde0d449eda7afa8f63280b165c8300dbd00e2 to < ff3f517bf7138e01a17369042908a3f345c0ee41, bcbde0d449eda7afa8f63280b165c8300dbd00e2 to < c0315e93552e0d840e9edc6abd71c7db82ec8f51, bcbde0d449eda7afa8f63280b165c8300dbd00e2 to < dadce61247c6230489527cc5e343b6002d1114c5, bcbde0d449eda7afa8f63280b165c8300dbd00e2 to < 4c986072a8c9249b9398c7a18f216dc26a9f0e35, bcbde0d449eda7afa8f63280b165c8300dbd00e2 to < f123cffdd8fe8ea6c7fded4b88516a42798797d0, 3.11—

06 References

git.kernel.orghttps://git.kernel.org/stable/c/c54a60c8fbaa774f828e26df79f66229a8a0e010
git.kernel.orghttps://git.kernel.org/stable/c/40cf2e058832d9cfaae98dfd77334926275598b6
git.kernel.orghttps://git.kernel.org/stable/c/54e785f7d5c197bc06dbb8053700df7e2a093ced
git.kernel.orghttps://git.kernel.org/stable/c/ff3f517bf7138e01a17369042908a3f345c0ee41
git.kernel.orghttps://git.kernel.org/stable/c/c0315e93552e0d840e9edc6abd71c7db82ec8f51
git.kernel.orghttps://git.kernel.org/stable/c/dadce61247c6230489527cc5e343b6002d1114c5
git.kernel.orghttps://git.kernel.org/stable/c/4c986072a8c9249b9398c7a18f216dc26a9f0e35
git.kernel.orghttps://git.kernel.org/stable/c/f123cffdd8fe8ea6c7fded4b88516a42798797d0

01 Record index

CVE-2021-47606

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References

02 Records

CVE-2021-47606

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References