CVE-2026-64158 netfs: Fix write streaming disablement if fd open O_RDWR

[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "fs/netfs/buffered_write.c"
    ],
    "versions": [
      {
        "version": "c38f4e96e605f17990e871214e6ea1496bc4e65f",
        "lessThan": "9adf8e47d73d5e3c2fe77dea649dcde350ccd65c",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "c38f4e96e605f17990e871214e6ea1496bc4e65f",
        "lessThan": "616578e40dcba3f94810d841c5a52b7e3bc8ede7",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "c38f4e96e605f17990e871214e6ea1496bc4e65f",
        "lessThan": "7a9fa5b020a3a40f8291a71cd44c08d931da430d",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "c38f4e96e605f17990e871214e6ea1496bc4e65f",
        "lessThan": "70a7b9193bbbfceaab5974de66834c64ccc875dd",
        "status": "affected",
        "versionType": "git"
      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "affected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "fs/netfs/buffered_write.c"
    ],
    "versions": [
      {
        "version": "6.8",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "6.8",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.12.92",
        "lessThanOrEqual": "6.12.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.18.34",
        "lessThanOrEqual": "6.18.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.0.11",
        "lessThanOrEqual": "7.0.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.1",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]