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Vulnerability DatabaseCVE-2022-34494
CVE-2022-34494:
Linux Kernel vulnerability analysis and mitigation
Overview
CVE-2022-34494 is a double-free vulnerability discovered in the virtio RPMSG bus driver of the Linux kernel before version 5.18.4. The vulnerability specifically affects the rpmsgvirtioaddctrldev function in drivers/rpmsg/virtiorpmsgbus.c (MITRE CVE, Ubuntu Security).
Technical details
The vulnerability occurs in the rpmsgvirtioaddctrldev function where a double-free condition exists in certain error paths. The issue stems from an unnecessary call to kfree() on a pointer that would already be freed in virtiorpmsgreleasedevice() when rpmsgctrldevregisterdevice() fails (GitHub Commit). The vulnerability has been assigned a CVSS 3 Severity Score of 5.5 (Medium) (Ubuntu Security).
Impact
If exploited, this vulnerability could allow a local attacker to potentially cause a denial of service condition through a system crash (Ubuntu Security).
Mitigation and workarounds
The vulnerability has been fixed in Linux kernel version 5.18.4. Ubuntu has released patches for affected versions, including Ubuntu 22.04 LTS (jammy) with version 5.15.0-48.54 and other supported releases (Ubuntu Security). Users are advised to update their systems to the patched versions.
Additional resources
Source: This report was generated using AI
Related Linux Kernel vulnerabilities:
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