Linux Kernel up to 6.6.6 af_unix unix_stream_read_generic privilege escalation

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4.5	$0-$5k	0.00

Summaryinfo

A vulnerability, which was classified as problematic, has been found in Linux Kernel up to 6.6.6. Affected is the function unix_stream_read_generic of the component af_unix. Performing a manipulation results in an unknown weakness. This vulnerability is identified as CVE-2023-52654. There is not any exploit available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability classified as problematic has been found in Linux Kernel up to 6.6.6. This affects the function unix_stream_read_generic of the component af_unix. The impact remains unknown. The summary by CVE is:

In the Linux kernel, the following vulnerability has been resolved: io_uring/af_unix: disable sending io_uring over sockets File reference cycles have caused lots of problems for io_uring in the past, and it still doesn't work exactly right and races with unix_stream_read_generic(). The safest fix would be to completely disallow sending io_uring files via sockets via SCM_RIGHT, so there are no possible cycles invloving registered files and thus rendering SCM accounting on the io_uring side unnecessary.

It is possible to read the advisory at git.kernel.org. This vulnerability is uniquely identified as CVE-2023-52654 since 03/06/2024. The exploitability is told to be difficult. Technical details of the vulnerability are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 296058 (Azure Linux 3.0 Security Update: hyperv-daemons (CVE-2023-52654)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 5.4.264, 5.10.204, 5.15.143, 6.1, 6.1.68 or 6.6.7 eliminates this vulnerability. Applying the patch 18824f592aad/3fe1ea5f921b/bcedd497b3b4/f2f57f51b53b/5a33d385eb36/705318a99a13 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 vulnerability database at Tenable (296058). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Type

• Operating System

Vendor

• Linux

Name

• Kernel

Version

• 5.4.263
• 5.10.203
• 5.15.142
• 6.0
• 6.1
• 6.1.0
• 6.1.1
• 6.1.2
• 6.1.3
• 6.1.4
• 6.1.5
• 6.1.6
• 6.1.7
• 6.1.8
• 6.1.9
• 6.1.10
• 6.1.11
• 6.1.12
• 6.1.13
• 6.1.14
• 6.1.15
• 6.1.16
• 6.1.17
• 6.1.18
• 6.1.19
• 6.1.20
• 6.1.21
• 6.1.22
• 6.1.23
• 6.1.24
• 6.1.25
• 6.1.26
• 6.1.27
• 6.1.28
• 6.1.29
• 6.1.30
• 6.1.31
• 6.1.32
• 6.1.33
• 6.1.34
• 6.1.35
• 6.1.36
• 6.1.37
• 6.1.38
• 6.1.39
• 6.1.40
• 6.1.41
• 6.1.42
• 6.1.43
• 6.1.44
• 6.1.45
• 6.1.46
• 6.1.47
• 6.1.48
• 6.1.49
• 6.1.50
• 6.1.51
• 6.1.52
• 6.1.53
• 6.1.54
• 6.1.55
• 6.1.56
• 6.1.57
• 6.1.58
• 6.1.59
• 6.1.60
• 6.1.61
• 6.1.62
• 6.1.63
• 6.1.64
• 6.1.65
• 6.1.66
• 6.1.67
• 6.6.0
• 6.6.1
• 6.6.2
• 6.6.3
• 6.6.4
• 6.6.5
• 6.6.6

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: 4.6
VulDB Meta Temp Score: 4.6

VulDB Base Score: 4.6
VulDB Temp Score: 4.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 4.7
NVD Vector: 🔍

CVSSv2info

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

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

Exploitinginfo

Class: Privilege escalation
CWE: Unknown
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Partially

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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

Nessus ID: 296058
Nessus Name: Azure Linux 3.0 Security Update: hyperv-daemons (CVE-2023-52654)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Kernel 5.4.264/5.10.204/5.15.143/6.1/6.1.68/6.6.7
Patch: 18824f592aad/3fe1ea5f921b/bcedd497b3b4/f2f57f51b53b/5a33d385eb36/705318a99a13

Timelineinfo

03/06/2024 🔍
05/09/2024 +63 days 🔍
05/09/2024 +0 days 🔍
01/25/2026 +626 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2023-52654 (🔍)
GCVE (CVE): GCVE-0-2023-52654
GCVE (VulDB): GCVE-100-263691

Entryinfo

Created: 05/09/2024 19:20
Updated: 01/25/2026 16:38
Changes: 05/09/2024 19:20 (57), 09/19/2025 03:31 (11), 01/25/2026 16:38 (2)
Complete: 🔍
Cache ID: 216::103

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Discussion

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