Linux Kernel up to 6.9-rc1~118/6.9.1 iwlwifi request_module_nowait deadlock

CVSS Meta Temp Score
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CTI Interest Score
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5.5$0-$5k0.00

Summaryinfo

A vulnerability categorized as critical has been discovered in Linux Kernel up to 6.9-rc1~118/6.9.1. Affected is the function request_module_nowait of the component iwlwifi. Such manipulation leads to deadlock. This vulnerability is traded as CVE-2024-36970. There is no exploit available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Linux Kernel up to 6.9-rc1~118/6.9.1. Affected by this issue is the function request_module_nowait of the component iwlwifi. The manipulation with an unknown input leads to a deadlock vulnerability. Using CWE to declare the problem leads to CWE-833. The product contains multiple threads or executable segments that are waiting for each other to release a necessary lock, resulting in deadlock. Impacted is availability. CVE summarizes:

In the Linux kernel, the following vulnerability has been resolved: wifi: iwlwifi: Use request_module_nowait This appears to work around a deadlock regression that came in with the LED merge in 6.9. The deadlock happens on my system with 24 iwlwifi radios, so maybe it something like all worker threads are busy and some work that needs to complete cannot complete. [also remove unnecessary "load_module" var and now-wrong comment]

The advisory is shared for download at git.kernel.org. This vulnerability is handled as CVE-2024-36970 since 05/30/2024. There are known technical details, but no exploit is available.

Upgrading to version 6.9-rc1~118 or 6.9.2 eliminates this vulnerability. Applying the patch d20013259539/3d913719df14 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.

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Productinfo

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Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.7
VulDB Meta Temp Score: 5.5

VulDB Base Score: 5.7
VulDB Temp Score: 5.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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

Exploitinginfo

Class: Deadlock
CWE: CWE-833 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
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 6.9-rc1~118/6.9.2
Patch: d20013259539/3d913719df14

Timelineinfo

05/30/2024 🔍
06/08/2024 +9 days 🔍
06/08/2024 +0 days 🔍
06/08/2024 +0 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2024-36970 (🔍)
GCVE (CVE): GCVE-0-2024-36970
GCVE (VulDB): GCVE-100-267464

Entryinfo

Created: 06/08/2024 16:23
Updated: 06/08/2024 23:37
Changes: 06/08/2024 16:23 (58), 06/08/2024 23:37 (1)
Complete: 🔍
Cache ID: 216::103

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