parisc: BTLB: Fix crash when setting up BTLB at CPU bringup

{
  "id": "5f500f880407bf0fc638d3809e04c14911769c80387905ac6e24251cdc5182aa",
  "url": "https://osv.dev/vulnerability/CVE-2024-26705",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "parisc: BTLB: Fix crash when setting up BTLB at CPU bringup",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: parisc: BTLB: Fix crash when setting up BTLB at CPU bringup When using hotplug and bringing up a 32-bit CPU, ask the firmware about the BTLB information to set up the static (block) TLB entries. For that write access to the static btlb_info struct is needed, but since it is marked __ro_after_init the kernel segfaults with missing write permissions. Fix the crash by dropping the __ro_after_init annotation.",
    "evidence": "osv:CVE-2024-26705",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "6.6.18",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.7.6",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2024-26705",
      "aliases": [
        "CVE-2024-26705"
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
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                  "introduced": "e5ef93d02d6c9cc3a14e7348481c9e41a528caa1"
                },
                {
                  "fixed": "54944f45470af5965fb9c28cf962ec30f38a8f5b"
                },
                {
                  "fixed": "aa52be55276614d33f22fbe7da36c40d6432d10b"
                },
                {
                  "fixed": "913b9d443a0180cf0de3548f1ab3149378998486"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-26705.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.6.0"
                },
                {
                  "fixed": "6.6.18"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.7.0"
                },
                {
                  "fixed": "6.7.6"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-26705.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:32.752391951Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/54944f45470af5965fb9c28cf962ec30f38a8f5b",
        "https://git.kernel.org/stable/c/913b9d443a0180cf0de3548f1ab3149378998486",
        "https://git.kernel.org/stable/c/aa52be55276614d33f22fbe7da36c40d6432d10b",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/26xxx/CVE-2024-26705.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2024-26705",
        "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/2024/26xxx/CVE-2024-26705.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2024-26705",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 499816,
  "published_at": "2024-04-03T14:55:08.733+00:00"
}