Cloud Vulnerability DB
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Vulnerability DatabaseCVE-2022-49392
CVE-2022-49392:
Linux Kernel vulnerability analysis and mitigation
Overview
CVE-2022-49392 is a vulnerability discovered in the Linux kernel affecting the serial driver component (8250aspeedvuart). The issue was identified as a potential NULL pointer dereference in the aspeedvuartprobe function. The vulnerability was resolved by adding proper NULL checks for the return value of platformgetresource() function (Kernel Git).
Technical details
The vulnerability exists in the Linux kernel's serial driver (8250aspeedvuart) where the platformgetresource() function's return value wasn't properly checked before use. This could lead to a NULL pointer dereference in the aspeedvuartprobe function. The fix involves adding a NULL check before using the resource pointer, returning -EINVAL if the resource is not available (Kernel Git).
Impact
If exploited, this vulnerability could lead to a NULL pointer dereference in the Linux kernel's serial driver component, potentially causing a system crash or denial of service condition (NVD).
Mitigation and workarounds
The vulnerability has been fixed in various Linux kernel versions. Users should update their systems to the patched versions. The fix has been backported to multiple stable kernel branches. For Debian systems, fixed versions are available in bullseye (5.10.234-1), bookworm (6.1.128-1), and sid/trixie (6.12.17-1) (Debian Security).
Additional resources
Source: This report was generated using AI
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