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.
CVSS Details
- CVSS 3.1 Base Score: 5.5
- CVSS 3.1 Vector: (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Debian | — | Upgrade linux | Feb 27, 2025 | Feb 27, 2025 |
| Ubuntu | — | Upgrade linux-gkeUpgrade linux-raspiUpgrade linux-lowlatency-hwe-5.15Upgrade linux-realtimeUpgrade linux-azureUpgrade linux-hwe-5.15Upgrade linux-intel-iotg-5.15Upgrade linux-lowlatencyUpgrade linux-gcpUpgrade linux-ibmUpgrade linux-oracleUpgrade linux-kvmUpgrade linux-awsUpgrade linux-azure-5.15Upgrade linux-intel-iotgUpgrade linux | Mar 19, 2025 | Feb 26, 2025 |
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