{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "8ff590903d5fc7f5a0a988c38267a3d08e6393a2"
            },
            {
              "fixed": "f48d3dd99199180cf37d6253550c55e86372309a"
            },
            {
              "fixed": "f9acceae7b004956851fd4268edf9f518a9bce04"
            },
            {
              "fixed": "7195350fb78538c25cd790d703f8f2c73ee0d395"
            },
            {
              "fixed": "7cdf2c6381b21ab5ccf8116750d5582fcd6c0f49"
            },
            {
              "fixed": "44eafa39363e8d5dfda6a8c6eb6b45458ed4b948"
            },
            {
              "fixed": "00cbdec17c15d024a1c5002c7365df7624a18a75"
            },
            {
              "fixed": "4b03ab0a587ec57eb7ddb5c115d84a42896f60f7"
            },
            {
              "fixed": "62397b493e14107ae82d8b80938f293d95425bcb"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "2.6.38"
            },
            {
              "fixed": "5.10.253"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.11.0"
            },
            {
              "fixed": "5.15.203"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.16.0"
            },
            {
              "fixed": "6.1.168"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.134"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.81"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.22"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "6.19.12"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43043.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ncrypto: af-alg - fix NULL pointer dereference in scatterwalk\n\nThe AF_ALG interface fails to unmark the end of a Scatter/Gather List (SGL)\nwhen chaining a new af_alg_tsgl structure. If a sendmsg() fills an SGL\nexactly to MAX_SGL_ENTS, the last entry is marked as the end. A subsequent\nsendmsg() allocates a new SGL and chains it, but fails to clear the end\nmarker on the previous SGL's last data entry.\n\nThis causes the crypto scatterwalk to hit a premature end, returning NULL\non sg_next() and leading to a kernel panic during dereference.\n\nFix this by explicitly unmarking the end of the previous SGL when\nperforming sg_chain() in af_alg_alloc_tsgl().",
  "id": "CVE-2026-43043",
  "modified": "2026-07-08T05:35:51.704080038Z",
  "published": "2026-05-01T14:15:39.576Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/00cbdec17c15d024a1c5002c7365df7624a18a75"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/44eafa39363e8d5dfda6a8c6eb6b45458ed4b948"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4b03ab0a587ec57eb7ddb5c115d84a42896f60f7"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/62397b493e14107ae82d8b80938f293d95425bcb"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7195350fb78538c25cd790d703f8f2c73ee0d395"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7cdf2c6381b21ab5ccf8116750d5582fcd6c0f49"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f48d3dd99199180cf37d6253550c55e86372309a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f9acceae7b004956851fd4268edf9f518a9bce04"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43043.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-43043"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.7.5",
  "summary": "crypto: af-alg - fix NULL pointer dereference in scatterwalk"
}