crypto: ccp - Fix possible deadlock in SEV init failure path

{
  "id": "d445d2a12ac883446ff1b1f266e2617ac27be118a3879569d6b3a77a8f33c2b8",
  "url": "https://osv.dev/vulnerability/CVE-2026-98871",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "crypto: ccp - Fix possible deadlock in SEV init failure path",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: crypto: ccp - Fix possible deadlock in SEV init failure path __sev_platform_init_handle_init_ex_path() calls rmp_mark_pages_firmware() with locked=false while the parent function of init_ex_path already acquired the sev_cmd_mutex. In the case of an RMPUPDATE failure for any page after the first, the cleanup path would invoke reclaim pages which would result in a deadlock in sev_do_cmd. Pass locked=true to honor the lock status of the parent function.",
    "evidence": "osv:CVE-2026-98871",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "6.12.111",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.18.53",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "7.2.6",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2026-98871",
      "aliases": [
        "CVE-2026-98871"
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "7364a6fbca45f826952ea932699fb2171d06ee73"
                },
                {
                  "fixed": "8e7e06ee7c2938ee3fa31a61cc5289a45c8c13f1"
                },
                {
                  "fixed": "ffd3a3df92be697eb78118a146c6a5d5e6c1f724"
                },
                {
                  "fixed": "364f3841bc22c72b6e2cb72a1e3c91c9c8fc1ef4"
                },
                {
                  "fixed": "b0e7ec0dab242c5e480121ba12400d0513e37ca2"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-98871.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.9.0"
                },
                {
                  "fixed": "6.12.111"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.13.0"
                },
                {
                  "fixed": "6.18.53"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.19.0"
                },
                {
                  "fixed": "7.2.6"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-98871.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:26.942913567Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/364f3841bc22c72b6e2cb72a1e3c91c9c8fc1ef4",
        "https://git.kernel.org/stable/c/8e7e06ee7c2938ee3fa31a61cc5289a45c8c13f1",
        "https://git.kernel.org/stable/c/b0e7ec0dab242c5e480121ba12400d0513e37ca2",
        "https://git.kernel.org/stable/c/ffd3a3df92be697eb78118a146c6a5d5e6c1f724",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98871.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-98871",
        "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
      ],
      "provider_metadata": {
        "cna_assigner": "Linux",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98871.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-98871",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 493576,
  "published_at": "2026-10-23T11:37:09.369+00:00"
}