Cloud Vulnerability DB
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Vulnerability DatabaseCVE-2023-53022
CVE-2023-53022:
Linux Kernel vulnerability analysis and mitigation
Overview
A vulnerability in the Linux kernel's network driver (enetc) was identified and resolved, tracked as CVE-2023-53022. The issue was discovered in version 6.2.0-rc2 and involves a potential deadlock condition in the enetc_tx_onestep_tstamp() function (NVD).
Technical details
The vulnerability occurs when the enetc_tx_onestep_tstamp() work item runs in process context with softirqs enabled. When holding the netif_tx_lock() during an interrupt, if the NET_TX softirq gets scheduled, it attempts to take the netif_tx_lock() a second time, resulting in a kernel deadlock. The issue manifests as an inconsistent lock state between {IN-SOFTIRQ-W} and {SOFTIRQ-ON-W} usage patterns (NVD).
Impact
The vulnerability can lead to a kernel deadlock condition, potentially causing system unresponsiveness or requiring a system restart (NVD).
Mitigation and workarounds
The fix involves using netif_tx_lock_bh() instead of netif_tx_lock(), which blocks softirqs from running and prevents the deadlock condition. This solution has been implemented in the kernel source code (NVD).
Additional resources
Source: This report was generated using AI
Related Linux Kernel vulnerabilities:
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