Linux Kernel up to 5.3.4 qla3xxx.c ql_alloc_large_buffers resource consumption

CVSS Meta Temp Score
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CTI Interest Score
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4.3$0-$5k0.00

Summaryinfo

A vulnerability described as problematic has been identified in Linux Kernel up to 5.3.4. This impacts the function ql_alloc_large_buffers of the file drivers/net/ethernet/qlogic/qla3xxx.c. Such manipulation leads to resource consumption. This vulnerability is referenced as CVE-2019-18806. The attack can only be performed from a local environment. No exploit is available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in Linux Kernel up to 5.3.4 (Operating System) and classified as problematic. Affected by this issue is the function ql_alloc_large_buffers of the file drivers/net/ethernet/qlogic/qla3xxx.c. The manipulation with an unknown input leads to a resource consumption vulnerability. Using CWE to declare the problem leads to CWE-400. The product does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources. Impacted is availability. CVE summarizes:

A memory leak in the ql_alloc_large_buffers() function in drivers/net/ethernet/qlogic/qla3xxx.c in the Linux kernel before 5.3.5 allows local users to cause a denial of service (memory consumption) by triggering pci_dma_mapping_error() failures, aka CID-1acb8f2a7a9f.

The weakness was published 11/07/2019. This vulnerability is handled as CVE-2019-18806 since 11/07/2019. The attack needs to be approached locally. The requirement for exploitation is a simple authentication. There are known technical details, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 222855 (Linux Distros Unpatched Vulnerability : CVE-2019-18806), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 5.3.5 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (222855). Similar entries are available at VDB-145224, VDB-145223, VDB-145222 and VDB-145221. Once again VulDB remains the best source for vulnerability data.

Productinfo

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Version

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.4
VulDB Meta Temp Score: 4.3

VulDB Base Score: 3.3
VulDB Temp Score: 3.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Resource consumption
CWE: CWE-400 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 222855
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2019-18806

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Kernel 5.3.5
Patch: git.kernel.org

Timelineinfo

11/07/2019 🔍
11/07/2019 +0 days 🔍
11/08/2019 +1 days 🔍
03/05/2025 +1944 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: cdn.kernel.org
Status: Confirmed

CVE: CVE-2019-18806 (🔍)
GCVE (CVE): GCVE-0-2019-18806
GCVE (VulDB): GCVE-100-145220
See also: 🔍

Entryinfo

Created: 11/08/2019 11:21
Updated: 03/05/2025 08:23
Changes: 11/08/2019 11:21 (40), 11/08/2019 11:26 (18), 02/05/2024 14:55 (5), 03/05/2025 08:23 (18)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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