CVE-2024-27074
Linux Kernel vulnerability analysis and mitigation

Overview

CVE-2024-27074 is a memory leak vulnerability discovered in the Linux kernel's media subsystem, specifically in the go7007 driver. The vulnerability was identified in the go7007_load_encoder function where memory allocated for bounce (go->boot_fw) is not properly deallocated in the error path (NVD, Debian).

Technical details

The vulnerability occurs in a specific call chain: saa7134_go7007_init -> go7007_boot_encoder -> go7007_load_encoder -> kfree(go). When an error occurs during firmware transfer, the bounce buffer is leaked while go is freed. The issue has been assigned a CVSS v3.1 base score of 5.5 (Medium) with vector AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H (NVD).

Impact

The vulnerability can lead to memory leaks in the Linux kernel, potentially causing system resource depletion over time. This could affect system stability and performance, particularly in systems using the go7007 media driver (NVD).

Exploitability

The vulnerability requires local access with low privileges and no user interaction to exploit. The attack complexity is low, making it relatively straightforward to trigger the memory leak condition (NVD).

Mitigation and workarounds

The vulnerability has been fixed in multiple Linux kernel versions through patches that properly deallocate the bounce buffer in the error path. The fix has been backported to various kernel versions and is available in Linux kernel updates for different distributions including Debian (Kernel Patch).

Additional resources


SourceThis report was generated using AI

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