VDB-238214 · CVE-2023-4569 · GCVE-0-2023-4569

Linux Kernel up to 6.5-rc6 Netfilter nf_tables_api.c nft_set_catchall_flush memory leak

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4.7	$0-$5k	0.00

Summaryinfo

A vulnerability was found in Linux Kernel up to 6.5-rc6 and classified as problematic. This impacts the function nft_set_catchall_flush of the file net/netfilter/nf_tables_api.c of the component Netfilter. Such manipulation leads to memory leak. This vulnerability is traded as CVE-2023-4569. An attack has to be approached locally. There is no exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in Linux Kernel up to 6.5-rc6 (Operating System). Affected by this issue is the function nft_set_catchall_flush of the file net/netfilter/nf_tables_api.c of the component Netfilter. The manipulation with an unknown input leads to a memory leak vulnerability. Using CWE to declare the problem leads to CWE-401. The product does not sufficiently track and release allocated memory after it has been used, which slowly consumes remaining memory. Impacted is confidentiality. CVE summarizes:

A memory leak flaw was found in nft_set_catchall_flush in net/netfilter/nf_tables_api.c in the Linux Kernel. This issue may allow a local attacker to cause a double-deactivations of catchall elements, which results in a memory leak.

The weakness was shared 08/29/2023. The advisory is available at patchwork.ozlabs.org. This vulnerability is handled as CVE-2023-4569 since 08/28/2023. Technical details are known, but there is no available exploit.

Upgrading to version 6.5-rc7 eliminates this vulnerability. Applying a patch is able to eliminate this problem. The bugfix is ready for download at patchwork.ozlabs.org. The best possible mitigation is suggested to be upgrading to the latest version.

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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: 4.8
VulDB Meta Temp Score: 4.7

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

NVD Base Score: 5.5
NVD Vector: 🔍

CNA Base Score: 5.5
CNA Vector (Red Hat, Inc.): 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

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

Exploitinginfo

Class: Memory leak
CWE: CWE-401 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Kernel 6.5-rc7
Patch: patchwork.ozlabs.org

Timelineinfo

08/28/2023 🔍
08/29/2023 +1 days 🔍
08/29/2023 +0 days 🔍
09/22/2023 +24 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: patchwork.ozlabs.org
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2023-4569 (🔍)
GCVE (CVE): GCVE-0-2023-4569
GCVE (VulDB): GCVE-100-238214

Entryinfo

Created: 08/29/2023 07:19
Updated: 09/22/2023 08:37
Changes: 08/29/2023 07:19 (55), 09/22/2023 08:37 (11)
Complete: 🔍
Cache ID: 216::103