Linux Kernel up to 5.17.14/5.18.3 watchdog: rzg2l_wdt timer_cycle_us privilege escalation

CVSS Meta Temp Score
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CTI Interest Score
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5.3$0-$5k0.00

Summaryinfo

A vulnerability was found in Linux Kernel up to 5.17.14/5.18.3. It has been declared as problematic. Impacted is an unknown function of the component watchdog: rzg2l_wdt. Executing a manipulation of the argument timer_cycle_us can lead to an unknown weakness. This vulnerability is handled as CVE-2022-49387. There is not any exploit available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in Linux Kernel up to 5.17.14/5.18.3. It has been declared as problematic. This vulnerability affects some unknown processing of the component watchdog: rzg2l_wdt. The manipulation of the argument timer_cycle_us with an unknown input leads to a unknown weakness. The impact remains unknown. CVE summarizes:

In the Linux kernel, the following vulnerability has been resolved: watchdog: rzg2l_wdt: Fix 32bit overflow issue The value of timer_cycle_us can be 0 due to 32bit overflow. For eg:- If we assign the counter value "0xfff" for computing maxval. This patch fixes this issue by appending ULL to 1024, so that it is promoted to 64bit. This patch also fixes the warning message, 'watchdog: Invalid min and max timeout values, resetting to 0!'.

The advisory is shared for download at git.kernel.org. This vulnerability was named CVE-2022-49387 since 02/26/2025. There are known technical details, but no exploit is available.

Upgrading to version 5.17.15 or 5.18.4 eliminates this vulnerability. Applying the patch e07b9fa0dc32b492de85528caaf9f0c605d8424f/b95a47667d34e76c2c9013f8e3b1e5039a5a0b76/ea2949df22a533cdf75e4583c00b1ce94cd5a83b 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.

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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: 5.5
VulDB Meta Temp Score: 5.3

VulDB Base Score: 5.5
VulDB Temp Score: 5.3
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: Privilege escalation
CWE: Unknown
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 5.17.15/5.18.4
Patch: e07b9fa0dc32b492de85528caaf9f0c605d8424f/b95a47667d34e76c2c9013f8e3b1e5039a5a0b76/ea2949df22a533cdf75e4583c00b1ce94cd5a83b

Timelineinfo

02/26/2025 🔍
02/26/2025 +0 days 🔍
02/26/2025 +0 days 🔍
02/26/2025 +0 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2022-49387 (🔍)
GCVE (CVE): GCVE-0-2022-49387
GCVE (VulDB): GCVE-100-297016

Entryinfo

Created: 02/26/2025 09:42
Updated: 02/26/2025 09:45
Changes: 02/26/2025 09:42 (17), 02/26/2025 09:45 (40)
Complete: 🔍
Committer: sany
Cache ID: 216::103

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