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CVE-2026-68293 net/mlx5: Fix MCIA register buffer overflow on 32 dword reads

🗓️ 10 Aug 2026 12:02:26Reported by LinuxType 
cvelist
 cvelist
🔗 www.cve.org👁 33 Views

Fix buffer overflow in MCIA register reads by extending mcia_reg to 32 dwords.

Related
Affected
Refs
[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "drivers/net/ethernet/mellanox/mlx5/core/port.c",
      "include/linux/mlx5/mlx5_ifc.h"
    ],
    "versions": [
      {
        "version": "271907ee2f29cd1078fd219f0778fd824fb1971c",
        "lessThan": "5be4eebd5a3a198dab0adcd550e1cadca79bdfed",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "271907ee2f29cd1078fd219f0778fd824fb1971c",
        "lessThan": "87b39a8c875ca744b7de69af0a8ef8874cffccf1",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "271907ee2f29cd1078fd219f0778fd824fb1971c",
        "lessThan": "88b2a16ddac3357e3f1d528e758b51e2c945d546",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "271907ee2f29cd1078fd219f0778fd824fb1971c",
        "lessThan": "11c057d23465c7a5817a7284c896d19d54c0b616",
        "status": "affected",
        "versionType": "git"
      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "affected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "drivers/net/ethernet/mellanox/mlx5/core/port.c",
      "include/linux/mlx5/mlx5_ifc.h"
    ],
    "versions": [
      {
        "version": "5.18",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "5.18",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.12.101",
        "lessThanOrEqual": "6.12.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.18.42",
        "lessThanOrEqual": "6.18.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.1.6",
        "lessThanOrEqual": "7.1.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.2",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]

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17 Aug 2026 05:02Current
CVSS 3.17.1
EPSS0.00138
33