{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "da58f90f11f597520f226caff1d3cfc115abedc9"
            },
            {
              "fixed": "175556c049eaec14efde8c6475e763b7579b9de7"
            },
            {
              "fixed": "6e2cfd0904976e701d7a76b86b694e72af230ab0"
            },
            {
              "fixed": "1b7b6ae0e93b8d512e208b1378d74af052e4f4e7"
            },
            {
              "fixed": "818f7673ed7f4a29d4b9cee8184c47d6e57162b4"
            },
            {
              "fixed": "978ca6ff789f1f19c03288ac20cc1f4774e88490"
            },
            {
              "fixed": "750d0091bebf44975421268d37484ef87060d263"
            },
            {
              "fixed": "bc6002865e8c4fcf9e94975f7cf023448d8764e2"
            },
            {
              "fixed": "35eaa6d8d6c2ee65e96f507add856e0eacf24591"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "5.4.0"
            },
            {
              "fixed": "5.10.258"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.11.0"
            },
            {
              "fixed": "5.15.209"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.16.0"
            },
            {
              "fixed": "6.1.175"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.141"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.91"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.33"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.0.10"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/52xxx/CVE-2026-52985.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetdevsim: zero initialize struct iphdr in dummy sk_buff\n\nSyzbot reports a KMSAN uninit-value originating from\nnsim_dev_trap_skb_build, with the allocation also\nbeing performed in the same function.\n\nFix this by calling skb_put_zero instead of skb_put to\nguarantee zero initialization of the whole IP header.",
  "id": "CVE-2026-52985",
  "modified": "2026-07-08T05:36:19.566846033Z",
  "published": "2026-06-24T16:28:59.871Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/175556c049eaec14efde8c6475e763b7579b9de7"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1b7b6ae0e93b8d512e208b1378d74af052e4f4e7"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/35eaa6d8d6c2ee65e96f507add856e0eacf24591"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6e2cfd0904976e701d7a76b86b694e72af230ab0"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/750d0091bebf44975421268d37484ef87060d263"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/818f7673ed7f4a29d4b9cee8184c47d6e57162b4"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/978ca6ff789f1f19c03288ac20cc1f4774e88490"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/bc6002865e8c4fcf9e94975f7cf023448d8764e2"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/52xxx/CVE-2026-52985.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-52985"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.7.5",
  "summary": "netdevsim: zero initialize struct iphdr in dummy sk_buff"
}