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Vulnerability DatabaseCVE-2022-48886

CVE-2022-48886: 
Linux Kernel vulnerability analysis and mitigation

Overview

CVE-2022-48886 is a vulnerability in the Linux kernel's ice driver that was discovered and resolved in 2024. The vulnerability relates to a missing check for the return value of kzalloc in the GNSS TTY functionality, which could potentially lead to a NULL pointer dereference (Kernel Git).

Technical details

The vulnerability exists in the icegnsscreatettydriver function within the Linux kernel's ice driver. The issue stems from a failure to properly validate the return value of kzalloc when allocating memory for GNSS TTY ports. The fix involves adding a check for the kzalloc return value and implementing proper error handling using goto-label to share the clean code (Kernel Git).

Impact

If exploited, this vulnerability could lead to a NULL pointer dereference in the Linux kernel's ice driver, potentially causing system instability or denial of service (CVE Mitre).

Mitigation and workarounds

The vulnerability has been fixed in the Linux kernel through a patch that adds proper NULL pointer checking after kzalloc calls. The fix was implemented by Jiasheng Jiang and reviewed by Jiri Pirko. Systems should be updated to include this security fix (Kernel Git).

Additional resources

Source: This report was generated using AI

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