{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "146d2f1af3245a10b13eef263687e54f4e253d1d"
            },
            {
              "fixed": "2c3b2667dad69d56774b79db763acb3a1bee0fc0"
            },
            {
              "fixed": "37fc3cc0f924fd8d0f0cf87b92672dec75a32e57"
            },
            {
              "fixed": "65e344925fa30abf50c8de8c150b397715fa2066"
            },
            {
              "fixed": "f88e12c95fc19f719e06ca1e9eb20fdad68ef61a"
            },
            {
              "fixed": "e79389115b9d27287ff6230a9750675106ed7668"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "4.5.0"
            },
            {
              "fixed": "6.6.145"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.97"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.40"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.1.5"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74397.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nIB/mlx5: Fix transport-domain rollback and initialize lb mutex earlier\n\nmlx5_ib_alloc_transport_domain() allocates a transport domain and then\nmay fail in mlx5_ib_enable_lb(). In that case, the allocated TD is leaked.\n\nFix this by deallocating the TD when mlx5_ib_enable_lb() returns an\nerror. Also return 0 explicitly in the no-loopback-capability success\nbranch, and move dev-\u003elb.mutex initialization to mlx5_ib_stage_init_init().",
  "id": "CVE-2026-74397",
  "modified": "2026-08-18T03:31:13.151129244Z",
  "published": "2026-08-15T05:59:09.329Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2c3b2667dad69d56774b79db763acb3a1bee0fc0"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/37fc3cc0f924fd8d0f0cf87b92672dec75a32e57"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/65e344925fa30abf50c8de8c150b397715fa2066"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e79389115b9d27287ff6230a9750675106ed7668"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f88e12c95fc19f719e06ca1e9eb20fdad68ef61a"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74397.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-74397"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "IB/mlx5: Fix transport-domain rollback and initialize lb mutex earlier"
}