Linux Kernel 6.2 vidtv_bridge.c vidtv_mux_stop_thread null pointer dereference

CVSS Meta Temp Score
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CTI Interest Score
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4.8$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic was found in Linux Kernel 6.2. This affects the function vidtv_mux_stop_thread of the file drivers/media/test-drivers/vidtv/vidtv_bridge.c. The manipulation results in null pointer dereference. This vulnerability is reported as CVE-2023-31081. Moreover, an exploit is present.

Detailsinfo

A vulnerability, which was classified as problematic, was found in Linux Kernel 6.2 (Operating System). Affected is the function vidtv_mux_stop_thread of the file drivers/media/test-drivers/vidtv/vidtv_bridge.c. The manipulation with an unknown input leads to a null pointer dereference vulnerability. CWE is classifying the issue as CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. This is going to have an impact on availability. CVE summarizes:

An issue was discovered in drivers/media/test-drivers/vidtv/vidtv_bridge.c in the Linux kernel 6.2. There is a NULL pointer dereference in vidtv_mux_stop_thread. In vidtv_stop_streaming, after dvb->mux=NULL occurs, it executes vidtv_mux_stop_thread(dvb->mux).

The weakness was disclosed 04/24/2023. The advisory is available at lore.kernel.org. This vulnerability is traded as CVE-2023-31081 since 04/24/2023. Technical details and a public exploit are known.

The exploit is shared for download at gist.github.com. It is declared as proof-of-concept.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

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Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.8
VulDB Meta Temp Score: 4.8

VulDB Base Score: 3.5
VulDB Temp Score: 3.3
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: Null pointer dereference
CWE: CWE-476 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Partially

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

04/24/2023 🔍
04/24/2023 +0 days 🔍
04/24/2023 +0 days 🔍
02/05/2025 +653 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: lore.kernel.org
Status: Confirmed

CVE: CVE-2023-31081 (🔍)
GCVE (CVE): GCVE-0-2023-31081
GCVE (VulDB): GCVE-100-227262
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 04/24/2023 10:33
Updated: 02/05/2025 09:12
Changes: 04/24/2023 10:33 (43), 05/18/2023 09:24 (11), 02/05/2025 09:12 (26)
Complete: 🔍
Cache ID: 216::103

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