01 Record

CVE-2021-46905

net: hso: fix NULL-deref on disconnect regression

UnratedPUBLISHEDCNA: Linux

CNA base scoreUnratedNo CNA CVSS vector

View raw JSON

02 Description

net: hso: fix NULL-deref on disconnect regression

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

Equal to or higher than the score of 17.6% 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

2024-02-25 14:03Z2 YR AGO

Last updated

2026-05-23 15:18Z5 MO AGO

Reserved

2024-02-25

Assigning CNA

Linux

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

CWE-476NULL Pointer DereferenceBase

Data version

5.2

Document digest

afa4c274f79328c9eac6d2014646d3cb5719e661fc4467333a96c92fdcb5504a

05 Affected products

VendorProductVersionsPlatforms

LinuxLinuxa462067d7c8e6953a733bf5ade8db947b1bb5449 to < 5871761c5f0f20d6e98bf3b6bd7486d857589554, 145c89c441d27696961752bf51b323f347601bee to < 0c71d4c89559f72cec2592d078681a843bce570e, caf5ac93b3b5d5fac032fc11fbea680e115421b4 to < 24b699bea7553fc0b98dad9d864befb6005ac7f1, 92028d7a31e55d53e41cff679156b9432cffcb36 to < 5c17cfe155d21954b4c7e2a78fa771cebcd86725, 4a2933c88399c0ebc738db39bbce3ae89786d723 to < d7fad2ce15bdbbd0fec3ebe999fd7cab2267f53e, dc195928d7e4ec7b5cfc6cd10dc4c8d87a7c72ac to < 90642ee9eb581a13569b1c0bd57e85d962215273, 388d05f70f1ee0cac4a2068fd295072f1a44152a to < 0f000005da31f6947f843ce6b3e3a960540c6e00, 8a12f8836145ffe37e9c8733dce18c22fb668b66 to < 41c44e1f3112d7265dae522c026399b2a42d19ef, 8a12f8836145ffe37e9c8733dce18c22fb668b66 to < 2ad5692db72874f02b9ad551d26345437ea4f7f3, 4.19.187 to < 4.19.189, 5.4.112 to < 5.4.115, 5.10.30 to < 5.10.33, 5.11.14 to < 5.11.17, 5.12—

06 References

git.kernel.orghttps://git.kernel.org/stable/c/5871761c5f0f20d6e98bf3b6bd7486d857589554
git.kernel.orghttps://git.kernel.org/stable/c/0c71d4c89559f72cec2592d078681a843bce570e
git.kernel.orghttps://git.kernel.org/stable/c/24b699bea7553fc0b98dad9d864befb6005ac7f1
git.kernel.orghttps://git.kernel.org/stable/c/5c17cfe155d21954b4c7e2a78fa771cebcd86725
git.kernel.orghttps://git.kernel.org/stable/c/d7fad2ce15bdbbd0fec3ebe999fd7cab2267f53e
git.kernel.orghttps://git.kernel.org/stable/c/90642ee9eb581a13569b1c0bd57e85d962215273
git.kernel.orghttps://git.kernel.org/stable/c/0f000005da31f6947f843ce6b3e3a960540c6e00
git.kernel.orghttps://git.kernel.org/stable/c/41c44e1f3112d7265dae522c026399b2a42d19ef
git.kernel.orghttps://git.kernel.org/stable/c/2ad5692db72874f02b9ad551d26345437ea4f7f3