{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "cd97f39b7cdf1c8a9c9f52865eec795b7f0c811d"
            },
            {
              "fixed": "e9ffd5f5050fbb199d270a85614cd27ebed6fbac"
            },
            {
              "fixed": "0b88ecfbc9dc33b4db8836c37b50cf174e6c0691"
            },
            {
              "fixed": "943e318eedbeaeea08ece3f5dd44c982f4ed2ef5"
            },
            {
              "fixed": "aa6ef734016912653a909477fb30aeb66c98b3a2"
            },
            {
              "fixed": "ff02add34ffd03449b8115904ebe2ec4fed022d4"
            },
            {
              "fixed": "ffbcf31f032eb454ebfd29309f51366fe57f4ac4"
            },
            {
              "fixed": "4576621dc6577f21a032acfd16c3ad61907a5ea7"
            },
            {
              "fixed": "617eb7c0961a8dfcfc811844a6396e406b2923ea"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "2.6.29"
            },
            {
              "fixed": "5.10.259"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.11.0"
            },
            {
              "fixed": "5.15.210"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.16.0"
            },
            {
              "fixed": "6.1.176"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.143"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.94"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.36"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.0.13"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/52xxx/CVE-2026-52948.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ni2c: dev: prevent integer overflow in I2C_TIMEOUT ioctl\n\nWhile fuzzing with Syzkaller, a persistent `schedule_timeout: wrong\ntimeout value` warning was observed, accompanied by SMBus controller\nstate machine corruption.\n\nThe I2C_TIMEOUT ioctl accepts a user-provided timeout in multiples of\n10 ms. The user argument is checked against INT_MAX, but it is\nsubsequently multiplied by 10 before being passed to msecs_to_jiffies().\n\nA malicious user can pass a large value (e.g., 429496729) that passes\nthe `arg \u003e INT_MAX` check but overflows when multiplied by 10. This\nresults in a truncated 32-bit unsigned value that bypasses the\ninternal `(int)m \u003c 0` check in `msecs_to_jiffies()`.\n\nThe truncated value is then assigned to `client-\u003eadapter-\u003etimeout`\n(a signed 32-bit int), which is reinterpreted as a negative number.\nWhen passed to wait_for_completion_timeout(), this negative value\nundergoes sign extension to a 64-bit unsigned long, triggering the\n`schedule_timeout` warning and causing premature returns. This leaves\nthe SMBus state machine in an unrecoverable state, constituting a\nlocal Denial of Service (DoS).\n\nFix this by bounding the user argument to `INT_MAX / 10`.\n\n[wsa: move the comment as well]",
  "id": "CVE-2026-52948",
  "modified": "2026-07-12T03:55:16.627151368Z",
  "published": "2026-06-24T16:26:05.719Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0b88ecfbc9dc33b4db8836c37b50cf174e6c0691"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4576621dc6577f21a032acfd16c3ad61907a5ea7"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/617eb7c0961a8dfcfc811844a6396e406b2923ea"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/943e318eedbeaeea08ece3f5dd44c982f4ed2ef5"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/aa6ef734016912653a909477fb30aeb66c98b3a2"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e9ffd5f5050fbb199d270a85614cd27ebed6fbac"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ff02add34ffd03449b8115904ebe2ec4fed022d4"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ffbcf31f032eb454ebfd29309f51366fe57f4ac4"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/52xxx/CVE-2026-52948.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-52948"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.7.5",
  "summary": "i2c: dev: prevent integer overflow in I2C_TIMEOUT ioctl"
}