{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "dcbc919a5dc8c2629684a113a90c0b6fe10c3462"
            },
            {
              "fixed": "36a79759a288961b1ff28a68ec2d1f56f6848098"
            },
            {
              "fixed": "3f2575bb7f955d42569d96c3e04fa958a0dcf4b4"
            },
            {
              "fixed": "8713bbc4b2b9ad78f803978e54b7e49dd21bd9be"
            },
            {
              "fixed": "0d2dd7e6bb74fd7712aa73457a4a821906c6863a"
            },
            {
              "fixed": "e7187f33c02488697ec0d01d82bf7a3f8deaba8f"
            },
            {
              "fixed": "48df98d12b15360cd56af5c1f460307b340c1197"
            },
            {
              "fixed": "ee933694645dac062d65fc2743f92bc06fa0db6b"
            },
            {
              "fixed": "35d0ed82d03e5ee77ea4f31f20e29562a7721649"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "5.3.0"
            },
            {
              "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-2026-52958.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nlibceph: Fix potential out-of-bounds access in osdmap_decode()\n\nWhen decoding osd_state and osd_weight from an incoming osdmap in\nosdmap_decode(), both are decoded for each osd, i.e., map-\u003emax_osd\ntimes. The ceph_decode_need() check only accounts for\nsizeof(*map-\u003eosd_weight) once. This can potentially result in an\nout-of-bounds memory access if the incoming message is corrupted such\nthat the max_osd value exceeds the actual content of the osdmap message.\n\nThis patch fixes the issue by changing the corresponding part in the\nceph_decode_need() check to account for\nmap-\u003emax_osd*sizeof(*map-\u003eosd_weight).",
  "id": "CVE-2026-52958",
  "modified": "2026-07-08T05:38:25.447708918Z",
  "published": "2026-06-24T16:28:39.723Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0d2dd7e6bb74fd7712aa73457a4a821906c6863a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/35d0ed82d03e5ee77ea4f31f20e29562a7721649"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/36a79759a288961b1ff28a68ec2d1f56f6848098"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3f2575bb7f955d42569d96c3e04fa958a0dcf4b4"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/48df98d12b15360cd56af5c1f460307b340c1197"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8713bbc4b2b9ad78f803978e54b7e49dd21bd9be"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e7187f33c02488697ec0d01d82bf7a3f8deaba8f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ee933694645dac062d65fc2743f92bc06fa0db6b"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/52xxx/CVE-2026-52958.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-52958"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.7.5",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "libceph: Fix potential out-of-bounds access in osdmap_decode()"
}