{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/mellanox/mlx5/core/en_main.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "e12c912f92ccea671b514caf371f28485714bb4b",
              "status": "affected",
              "version": "89ee2d92f66c45625ff1c173df2dbdea32568c5d",
              "versionType": "git"
            },
            {
              "lessThan": "35e93736f69963337912594eb3951ab320b77521",
              "status": "affected",
              "version": "89ee2d92f66c45625ff1c173df2dbdea32568c5d",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/mellanox/mlx5/core/en_main.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.18"
            },
            {
              "lessThan": "6.18",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.3",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.19-rc2",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.3",
                  "versionStartIncluding": "6.18",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.19-rc2",
                  "versionStartIncluding": "6.18",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/mlx5e: Avoid unregistering PSP twice\n\nPSP is unregistered twice in:\n_mlx5e_remove -\u003e mlx5e_psp_unregister\nmlx5e_nic_cleanup -\u003e mlx5e_psp_unregister\n\nThis leads to a refcount underflow in some conditions:\n------------[ cut here ]------------\nrefcount_t: underflow; use-after-free.\nWARNING: CPU: 2 PID: 1694 at lib/refcount.c:28 refcount_warn_saturate+0xd8/0xe0\n[...]\n mlx5e_psp_unregister+0x26/0x50 [mlx5_core]\n mlx5e_nic_cleanup+0x26/0x90 [mlx5_core]\n mlx5e_remove+0xe6/0x1f0 [mlx5_core]\n auxiliary_bus_remove+0x18/0x30\n device_release_driver_internal+0x194/0x1f0\n bus_remove_device+0xc6/0x130\n device_del+0x159/0x3c0\n mlx5_rescan_drivers_locked+0xbc/0x2a0 [mlx5_core]\n[...]\n\nDo not directly remove psp from the _mlx5e_remove path, the PSP cleanup\nhappens as part of profile cleanup."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-01-13T15:28:54.795Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/e12c912f92ccea671b514caf371f28485714bb4b"
        },
        {
          "url": "https://git.kernel.org/stable/c/35e93736f69963337912594eb3951ab320b77521"
        }
      ],
      "title": "net/mlx5e: Avoid unregistering PSP twice",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-68779",
    "datePublished": "2026-01-13T15:28:54.795Z",
    "dateReserved": "2025-12-24T10:30:51.036Z",
    "dateUpdated": "2026-01-13T15:28:54.795Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2025-68779\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2026-01-13T16:15:57.550\",\"lastModified\":\"2026-01-13T16:15:57.550\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nnet/mlx5e: Avoid unregistering PSP twice\\n\\nPSP is unregistered twice in:\\n_mlx5e_remove -\u003e mlx5e_psp_unregister\\nmlx5e_nic_cleanup -\u003e mlx5e_psp_unregister\\n\\nThis leads to a refcount underflow in some conditions:\\n------------[ cut here ]------------\\nrefcount_t: underflow; use-after-free.\\nWARNING: CPU: 2 PID: 1694 at lib/refcount.c:28 refcount_warn_saturate+0xd8/0xe0\\n[...]\\n mlx5e_psp_unregister+0x26/0x50 [mlx5_core]\\n mlx5e_nic_cleanup+0x26/0x90 [mlx5_core]\\n mlx5e_remove+0xe6/0x1f0 [mlx5_core]\\n auxiliary_bus_remove+0x18/0x30\\n device_release_driver_internal+0x194/0x1f0\\n bus_remove_device+0xc6/0x130\\n device_del+0x159/0x3c0\\n mlx5_rescan_drivers_locked+0xbc/0x2a0 [mlx5_core]\\n[...]\\n\\nDo not directly remove psp from the _mlx5e_remove path, the PSP cleanup\\nhappens as part of profile cleanup.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/35e93736f69963337912594eb3951ab320b77521\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/e12c912f92ccea671b514caf371f28485714bb4b\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}