CVE-2024-42643

Publication date 22 October 2024

Last updated 26 August 2025

Ubuntu priority

Medium

Why this priority?

Cvss 3 Severity Score

7.5 · High

Score breakdown

Description

Integer Overflow in fast_ping.c in SmartDNS Release46 allows remote attackers to cause a Denial of Service via misaligned memory access.

Status

Package Ubuntu Release Status
smartdns 26.04 LTS resolute
Vulnerable
25.10 questing
Vulnerable
25.04 plucky Ignored end of life, was needed
24.10 oracular
Fixed 46+dfsg-1ubuntu0.1
24.04 LTS noble
Fixed 45+dfsg-1ubuntu0.1~esm1
22.04 LTS jammy
Not affected
20.04 LTS focal Not in release

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Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package Patch details
smartdns

Severity score breakdown

Parameter Value
Base score 7.5 · High
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality None
Integrity impact None
Availability impact High
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References

Related Ubuntu Security Notices (USN)

    • USN-7370-1
    • SmartDNS vulnerabilities
    • 25 March 2025

Other references

Access our resources on patching vulnerabilities