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CVE-2022-49192 Detail

Description

In the Linux kernel, the following vulnerability has been resolved: drivers: ethernet: cpsw: fix panic when interrupt coaleceing is set via ethtool cpsw_ethtool_begin directly returns the result of pm_runtime_get_sync when successful. pm_runtime_get_sync returns -error code on failure and 0 on successful resume but also 1 when the device is already active. So the common case for cpsw_ethtool_begin is to return 1. That leads to inconsistent calls to pm_runtime_put in the call-chain so that pm_runtime_put is called one too many times and as result leaving the cpsw dev behind suspended. The suspended cpsw dev leads to an access violation later on by different parts of the cpsw driver. Fix this by calling the return-friendly pm_runtime_resume_and_get function.


Metrics

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CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

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Hyperlink Resource
https://git.kernel.org/stable/c/2844e2434385819f674d1fb4130c308c50ba681e
https://git.kernel.org/stable/c/30ad11bff021a94aff6dab1ec9236fdfd884fbff
https://git.kernel.org/stable/c/459080fab12b23c0526026e5cedbf3fabb5457cc
https://git.kernel.org/stable/c/585dc196a08fccdcd1b7fcf473cf566b34c4b840

Weakness Enumeration

CWE-ID CWE Name Source

Change History

1 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2022-49192
NVD Published Date:
02/26/2025
NVD Last Modified:
02/26/2025
Source:
kernel.org