CVE-2024-53192

{"id": "CVE-2024-53192", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.5, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 1.8}]}, "published": "2024-12-27T14:15:26.780", "references": [{"url": "https://git.kernel.org/stable/c/02fb4f0084331ef72c28d0c70fcb15d1bea369ec", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/1bf8877150128c3abd9d233886a05f6966fbf0c7", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/b96fc194984d0c82de1ca2b4166b35b1298b216c", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "description": [{"lang": "en", "value": "CWE-120"}]}], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nclk: clk-loongson2: Fix potential buffer overflow in flexible-array member access\n\nFlexible-array member `hws` in `struct clk_hw_onecell_data` is annotated\nwith the `counted_by()` attribute. This means that when memory is\nallocated for this array, the _counter_, which in this case is member\n`num` in the flexible structure, should be set to the maximum number of\nelements the flexible array can contain, or fewer.\n\nIn this case, the total number of elements for the flexible array is\ndetermined by variable `clks_num` when allocating heap space via\n`devm_kzalloc()`, as shown below:\n\n289 struct loongson2_clk_provider *clp;\n\t...\n296 for (p = data; p->name; p++)\n297 clks_num++;\n298\n299 clp = devm_kzalloc(dev, struct_size(clp, clk_data.hws, clks_num),\n300 GFP_KERNEL);\n\nSo, `clp->clk_data.num` should be set to `clks_num` or less, and not\nexceed `clks_num`, as is currently the case. Otherwise, if data is\nwritten into `clp->clk_data.hws[clks_num]`, the instrumentation\nprovided by the compiler won't detect the overflow, leading to a\nmemory corruption bug at runtime.\n\nFix this issue by setting `clp->clk_data.num` to `clks_num`."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: clk: clk-loongson2: Se corrige un desbordamiento de b\u00fafer potencial en el acceso a miembros de la matriz flexible El miembro de la matriz flexible `hws` en `struct clk_hw_onecell_data` est\u00e1 anotado con el atributo `counted_by()`. Esto significa que cuando se asigna memoria para esta matriz, el _contador_, que en este caso es el miembro `num` en la estructura flexible, se debe establecer en el n\u00famero m\u00e1ximo de elementos que la matriz flexible puede contener, o menos. En este caso, el n\u00famero total de elementos para la matriz flexible se determina mediante la variable `clks_num` al asignar espacio de mont\u00f3n a trav\u00e9s de `devm_kzalloc()`, como se muestra a continuaci\u00f3n: 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); Por lo tanto, `clp->clk_data.num` debe establecerse en `clks_num` o menos, y no superar `clks_num`, como es el caso actualmente. De lo contrario, si los datos se escriben en `clp->clk_data.hws[clks_num]`, la instrumentaci\u00f3n proporcionada por el compilador no detectar\u00e1 el desbordamiento, lo que provocar\u00e1 un error de corrupci\u00f3n de memoria en tiempo de ejecuci\u00f3n. Solucione este problema estableciendo `clp->clk_data.num` en `clks_num`."}], "lastModified": "2025-03-24T17:25:45.587", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "158A6B22-9260-41D7-965A-A81798A5A969", "versionEndExcluding": "6.11.11", "versionStartIncluding": "6.10"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "D8882B1B-2ABC-4838-AC1D-DBDBB5764776", "versionEndExcluding": "6.12.2", "versionStartIncluding": "6.12"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}