CVE-2024-53193

/// Technical description

In the Linux kernel, the following vulnerability has been resolved:

clk: clk-loongson2: Fix memory corruption bug in struct loongson2_clk_provider

Some heap space is allocated for the flexible structure `struct

clk_hw_onecell_data` and its flexible-array member `hws` through

the composite structure `struct loongson2_clk_provider` in function

`loongson2_clk_probe()`, as shown below:

289 struct loongson2_clk_provider *clp;

...

296 for (p = data; p->name; p++)

297 clks_num++;

298

299 clp = devm_kzalloc(dev, struct_size(clp, clk_data.hws, clks_num),

300 GFP_KERNEL);

Then some data is written into the flexible array:

350 clp->clk_data.hws[p->id] = hw;

This corrupts `clk_lock`, which is the spinlock variable immediately

following the `clk_data` member in `struct loongson2_clk_provider`:

struct loongson2_clk_provider {

void __iomem *base;

struct device *dev;

struct clk_hw_onecell_data clk_data;

spin

/// Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

/// References