{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "4329514c61abefe4961541b128c549b017bab5ad"
            },
            {
              "fixed": "1604a2d68414aa4cc34faac0b7faa9c14455e8d3"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "83ac0304a2d77519dae1e54c9713cbe1aedf19c9"
            },
            {
              "fixed": "152295aa7dc2c5e046606f7dadc84fce41136446"
            },
            {
              "fixed": "7d260c5d2d89eb2c8c528d54b576b3aae3e20231"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "last_affected": "63f9d5fb4d8040077df801ca3270e2f02d55e0d9"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "6.18.14"
            },
            {
              "fixed": "6.18.34"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "6.19.4"
            },
            {
              "fixed": "6.20"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "6.18.34"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.0.11"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64122.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/mlx5e: Fix use-after-free in mlx5e_tx_reporter_timeout_recover\n\nmlx5e_tx_reporter_timeout_recover() accesses sq-\u003enetdev after\nmlx5e_safe_reopen_channels() has torn down and freed the channel (and\nits embedded SQs). Replace the three sq-\u003enetdev references with\npriv-\u003enetdev which is safe because priv outlives channel teardown.\n\nThe netdev_err() call already used priv-\u003enetdev for this reason; make\nthe trylock/unlock and health_channel_eq_recover calls consistent.\n\nThis fixes the following KASAN splat:\n\n  BUG: KASAN: use-after-free in mlx5e_tx_reporter_timeout_recover+0x1dd/0x360 [mlx5_core]\n  Read of size 8 at addr ffff889860ed0b28 by task kworker/u113:2/5277\n\n  Call Trace:\n   mlx5e_tx_reporter_timeout_recover+0x1dd/0x360 [mlx5_core]\n   devlink_health_reporter_recover+0xa2/0x150\n   devlink_health_report+0x254/0x7c0\n   mlx5e_reporter_tx_timeout+0x297/0x380 [mlx5_core]\n   mlx5e_tx_timeout_work+0x109/0x170 [mlx5_core]\n   process_one_work+0x677/0xf20\n   worker_thread+0x51f/0xd90\n   kthread+0x3a5/0x810\n   ret_from_fork+0x208/0x400\n   ret_from_fork_asm+0x1a/0x30",
  "id": "CVE-2026-64122",
  "modified": "2026-07-22T05:30:04.774220749Z",
  "published": "2026-07-19T15:40:20.446Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/152295aa7dc2c5e046606f7dadc84fce41136446"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1604a2d68414aa4cc34faac0b7faa9c14455e8d3"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7d260c5d2d89eb2c8c528d54b576b3aae3e20231"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64122.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-64122"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.8.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "net/mlx5e: Fix use-after-free in mlx5e_tx_reporter_timeout_recover"
}