Linux Kernel up to 5.17.1 of_parse_phandle reference count

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

Summaryinfo

A vulnerability was found in Linux Kernel up to 5.17.1. It has been classified as critical. This affects the function of_parse_phandle. Performing a manipulation results in reference count. This vulnerability is cataloged as CVE-2022-49240. There is no exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in Linux Kernel up to 5.17.1. It has been classified as critical. This affects the function of_parse_phandle. The manipulation with an unknown input leads to a reference count vulnerability. CWE is classifying the issue as CWE-911. The product uses a reference count to manage a resource, but it does not update or incorrectly updates the reference count. This is going to have an impact on availability. The summary by CVE is:

In the Linux kernel, the following vulnerability has been resolved: ASoC: mediatek: mt8195: Fix error handling in mt8195_mt6359_rt1019_rt5682_dev_probe The device_node pointer is returned by of_parse_phandle() with refcount incremented. We should use of_node_put() on it when done. This function only calls of_node_put() in the regular path. And it will cause refcount leak in error path.

It is possible to read the advisory at git.kernel.org. This vulnerability is uniquely identified as CVE-2022-49240 since 02/26/2025. Technical details of the vulnerability are known, but there is no available exploit.

Upgrading to version 5.17.2 eliminates this vulnerability. Applying the patch c652f8f0875b569f8afa80b8cf9762828fd6187b/c4b7174fe5bb875a09a78674a14a1589d1a672f3 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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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.6
VulDB Meta Temp Score: 5.5

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

NVD Base Score: 5.5
NVD Vector: 🔍

CVSSv2info

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

Exploitinginfo

Class: Reference count
CWE: CWE-911 / CWE-664
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 5.17.2
Patch: c652f8f0875b569f8afa80b8cf9762828fd6187b/c4b7174fe5bb875a09a78674a14a1589d1a672f3

Timelineinfo

02/26/2025 🔍
02/26/2025 +0 days 🔍
02/26/2025 +0 days 🔍
03/18/2025 +20 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2022-49240 (🔍)
GCVE (CVE): GCVE-0-2022-49240
GCVE (VulDB): GCVE-100-297519

Entryinfo

Created: 02/26/2025 12:04
Updated: 03/18/2025 06:58
Changes: 02/26/2025 12:04 (58), 03/18/2025 06:58 (11)
Complete: 🔍
Cache ID: 216::103

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