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CVE-2025-39830

Full vulnerability record from the local CVENow database.

Description

In the Linux kernel, the following vulnerability has been resolved: net/mlx5: HWS, Fix memory leak in hws_pool_buddy_init error path In the error path of hws_pool_buddy_init(), the buddy allocator cleanup doesn't free the allocator structure itself, causing a memory leak. Add the missing kfree() to properly release all allocated memory.

Severity
MEDIUM
CVSS score
5.5 (v3.1)
Vulnerability status
Modified
Source identifier
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Published
2025-09-16 14:15:51.183000
Last modified
2026-10-21 13:18:14.693000
View original CVE JSON
{
  "id": "CVE-2025-39830",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "published": "2025-09-16T14:15:51.183",
  "lastModified": "2026-10-21T13:18:14.693",
  "vulnStatus": "Modified",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/mlx5: HWS, Fix memory leak in hws_pool_buddy_init error path\n\nIn the error path of hws_pool_buddy_init(), the buddy allocator cleanup\ndoesn't free the allocator structure itself, causing a memory leak.\n\nAdd the missing kfree() to properly release all allocated memory."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nnet/mlx5: HWS, Corrección de fuga de memoria en la ruta de error de hws_pool_buddy_init\n\nEn la ruta de error de hws_pool_buddy_init(), la limpieza del asignador buddy no libera la propia estructura del asignador, causando una fuga de memoria.\n\nAñadir el kfree() faltante para liberar correctamente toda la memoria asignada."
    }
  ],
  "affected": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "affectedData": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "programFiles": [
            "drivers/net/ethernet/mellanox/mlx5/core/steering/hws/pool.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "versions": [
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              "version": "0",
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              "versionType": "original_commit_for_fix",
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  ],
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          "scope": "UNCHANGED",
          "confidentialityImpact": "NONE",
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}