{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "7864a79f37b55769b817d5e6c5ae0ca4bfdba93b"
            },
            {
              "fixed": "de33afc57f24538186bccf4c4f6c65dd38634fd8"
            },
            {
              "fixed": "1c1485343b7c1c39dab7ecb9cd16ba49fd0ce642"
            },
            {
              "fixed": "8db0a0fc84e80aa9924e0833aef6cc95df94e5a7"
            },
            {
              "fixed": "41e92e0caa1fe3df2efaca346bfcaeb7fb9826ab"
            },
            {
              "fixed": "0b30fbe6bf7cf6499b19dd886f466e7c9e820089"
            },
            {
              "fixed": "8fec16898f184e5f8f8fdd09ff1ced2bd7ffc13d"
            },
            {
              "fixed": "5ed1b048527bebe4529eb6e01c34dcc5d97ba5fe"
            },
            {
              "fixed": "2aaa41cf974f83a6fb105422bac4e2f107150774"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "4.19.0"
            },
            {
              "fixed": "5.10.270"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.11.0"
            },
            {
              "fixed": "5.15.221"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.16.0"
            },
            {
              "fixed": "6.1.188"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.157"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.110"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.52"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.2.6"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/93xxx/CVE-2026-93039.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nASoC: meson: Keep link pointers valid on realloc failure\n\nmeson_card_reallocate_links() grows the DAI link and private data\narrays with two consecutive krealloc() calls and updates the owner\npointers only after both calls have succeeded.\n\nA successful krealloc() may move the data: it frees the old block and\nreturns a new one. When that happens for the link array and the second\nkrealloc() then fails, card-\u003edai_link still points to the block that\nkrealloc() already freed, and the error path frees the new block too.\nThe probe error path then calls meson_card_clean_references(), which\ndereferences card-\u003edai_link and kfree()s it again, resulting in a\nuse-after-free and a double free.\n\nCommit card-\u003edai_link and card-\u003enum_links right after the first\nkrealloc() succeeds, so the pointer always refers to a valid allocation\nthat meson_card_clean_references() can walk and free. krealloc() with\n__GFP_ZERO zero-initializes the added entries, so walking them on the\nerror path is safe. With both failure paths reduced to a plain return,\ndrop the goto labels and the error message.",
  "id": "CVE-2026-93039",
  "modified": "2026-09-20T11:30:41.881830362Z",
  "published": "2026-09-17T16:10:32.812Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0b30fbe6bf7cf6499b19dd886f466e7c9e820089"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1c1485343b7c1c39dab7ecb9cd16ba49fd0ce642"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2aaa41cf974f83a6fb105422bac4e2f107150774"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/41e92e0caa1fe3df2efaca346bfcaeb7fb9826ab"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5ed1b048527bebe4529eb6e01c34dcc5d97ba5fe"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8db0a0fc84e80aa9924e0833aef6cc95df94e5a7"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8fec16898f184e5f8f8fdd09ff1ced2bd7ffc13d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/de33afc57f24538186bccf4c4f6c65dd38634fd8"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/93xxx/CVE-2026-93039.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-93039"
    },
    {
      "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:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "ASoC: meson: Keep link pointers valid on realloc failure"
}