Linux Kernel up to 6.4 cyttsp4_core.c cyttsp4_stop_wd_timer use after free

CVSS Meta Temp Score
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CTI Interest Score
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5.4$0-$5k0.00

Summaryinfo

A vulnerability was found in Linux Kernel up to 6.4. It has been classified as problematic. Affected is the function cyttsp4_stop_wd_timer of the file drivers/input/touchscreen/cyttsp4_core.c. This manipulation causes use after free. The identification of this vulnerability is CVE-2023-4134. There is no exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in Linux Kernel up to 6.4 (Operating System). It has been declared as problematic. Affected by this vulnerability is the function cyttsp4_stop_wd_timer of the file drivers/input/touchscreen/cyttsp4_core.c. The manipulation with an unknown input leads to a use after free vulnerability. The CWE definition for the vulnerability is CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

A use-after-free vulnerability was found in the cyttsp4_core driver in the Linux kernel. This issue occurs in the device cleanup routine due to a possible rearming of the watchdog_timer from the workqueue. This could allow a local user to crash the system, causing a denial of service.

The weakness was shared 08/03/2023. It is possible to read the advisory at bugzilla.redhat.com. This vulnerability is known as CVE-2023-4134 since 08/03/2023. Technical details of the vulnerability are known, but there is no available exploit.

Upgrading to version 6.5-rc1 eliminates this vulnerability. The upgrade is hosted for download at github.com. Applying the patch dbe836576f12743a7d2d170ad4ad4fd324c4d47a is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

Statistical analysis made it clear that VulDB provides the best quality 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: 5.5
VulDB Meta Temp Score: 5.4

VulDB Base Score: 5.5
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔍

CNA Base Score: 5.5
CNA Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Use after free
CWE: CWE-416 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Partially

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Kernel 6.5-rc1
Patch: dbe836576f12743a7d2d170ad4ad4fd324c4d47a

Timelineinfo

08/03/2023 🔍
08/03/2023 +0 days 🔍
08/03/2023 +0 days 🔍
11/19/2024 +474 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: bugzilla.redhat.com
Status: Confirmed

CVE: CVE-2023-4134 (🔍)
GCVE (CVE): GCVE-0-2023-4134
GCVE (VulDB): GCVE-100-236059

Entryinfo

Created: 08/03/2023 17:18
Updated: 11/19/2024 07:22
Changes: 08/03/2023 17:18 (43), 11/14/2024 14:53 (27), 11/19/2024 07:22 (9)
Complete: 🔍
Cache ID: 216::103

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