VDB-321681 · CVE-2024-58240 · EUVD-2024-54920

Linux Kernel up to 6.6.20/6.7.8 tls crypto_wait reference count

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6.2	$0-$5k	0.00

Summaryinfo

A vulnerability has been found in Linux Kernel up to 6.6.20/6.7.8 and classified as critical. This affects the function crypto_wait of the component tls. Performing a manipulation results in reference count. This vulnerability is identified as CVE-2024-58240. There is not any exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability, which was classified as critical, was found in Linux Kernel up to 6.6.20/6.7.8. This affects the function crypto_wait of the component tls. The manipulation with an unknown input leads to a reference count vulnerability. CWE is classifying the issue as CWE-911. The product uses a reference count to manage a resource, but it does not update or incorrectly updates the reference count. This is going to have an impact on availability. The summary by CVE is:

In the Linux kernel, the following vulnerability has been resolved: tls: separate no-async decryption request handling from async If we're not doing async, the handling is much simpler. There's no reference counting, we just need to wait for the completion to wake us up and return its result. We should preferably also use a separate crypto_wait. I'm not seeing a UAF as I did in the past, I think aec7961916f3 ("tls: fix race between async notify and socket close") took care of it. This will make the next fix easier.

The advisory is shared at git.kernel.org. This vulnerability is uniquely identified as CVE-2024-58240 since 04/16/2025. The exploitability is told to be difficult. Technical details are known, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 265709 (Debian dsa-6009 : affs-modules-6.1.0-37-4kc-malta-di - security update), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 6.6.21 or 6.7.9 eliminates this vulnerability. Applying the patch dec5b6e7b211e405d3bcb504562ab21aa7e5a64d/999115298017a675d8ddf61414fc7a85c89f1186/41532b785e9d79636b3815a64ddf6a096647d011 is able to eliminate this problem. The bugfix is ready for download at git.kernel.org. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the databases at Tenable (265709), EUVD (EUVD-2024-54920) and CERT Bund (WID-SEC-2025-1921). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Affected

Debian Linux
Google Cloud Platform
Red Hat Enterprise Linux
SUSE Linux
Open Source Linux Kernel
Dell Secure Connect Gateway
Dell NetWorker

Productinfo

Type

Operating System

Vendor

Linux

Name

Kernel

Version

License

open-source

Website

Vendor: https://www.kernel.org/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 6.2

VulDB Base Score: 4.8
VulDB Temp Score: 4.6
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 7.8
NVD Vector: 🔒

CVSSv2info

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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Reference count
CWE: CWE-911 / CWE-664
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: Partially

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒