FKIE_CVE-2026-74358

Vulnerability from fkie_nvd - Published: 2026-08-15 06:22 - Updated: 2026-08-17 06:19
Severity
Summary
In the Linux kernel, the following vulnerability has been resolved: ext4: fix fast commit wait/wake bit mapping on 64-bit On 64-bit, ext4 dynamic inode states live in the upper half of i_flags, and ext4_test_inode_state() applies the corresponding +32 offset. The fast-commit wait and wake paths open-coded the wait key with the raw EXT4_STATE_* value. Add small helpers for the state wait word and bit, and use them for the FC_COMMITTING and FC_FLUSHING_DATA waits so the wait key follows the same mapping as the state helpers.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/8b3bc93fee6771775243665a0cf31857d6659775
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d06df6e447a8510f86db44b2522d5375362a9499
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/e82d515092a0cf2bca92f399d5c330c324879cea
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/ext4/ext4.h",
            "fs/ext4/fast_commit.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "e82d515092a0cf2bca92f399d5c330c324879cea",
              "status": "affected",
              "version": "857d32f2618166765ce9306a246d0745afc76859",
              "versionType": "git"
            },
            {
              "lessThan": "d06df6e447a8510f86db44b2522d5375362a9499",
              "status": "affected",
              "version": "857d32f2618166765ce9306a246d0745afc76859",
              "versionType": "git"
            },
            {
              "lessThan": "8b3bc93fee6771775243665a0cf31857d6659775",
              "status": "affected",
              "version": "857d32f2618166765ce9306a246d0745afc76859",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "fs/ext4/ext4.h",
            "fs/ext4/fast_commit.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.16"
            },
            {
              "lessThan": "6.16",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.40",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.1.*",
              "status": "unaffected",
              "version": "7.1.5",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.2",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\next4: fix fast commit wait/wake bit mapping on 64-bit\n\nOn 64-bit, ext4 dynamic inode states live in the upper half of i_flags,\nand ext4_test_inode_state() applies the corresponding +32 offset.\n\nThe fast-commit wait and wake paths open-coded the wait key with the raw\nEXT4_STATE_* value. Add small helpers for the state wait word and bit,\nand use them for the FC_COMMITTING and FC_FLUSHING_DATA waits so the wait\nkey follows the same mapping as the state helpers."
    }
  ],
  "id": "CVE-2026-74358",
  "lastModified": "2026-08-17T06:19:30.537",
  "metrics": {},
  "published": "2026-08-15T06:22:37.313",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/8b3bc93fee6771775243665a0cf31857d6659775"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/d06df6e447a8510f86db44b2522d5375362a9499"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/e82d515092a0cf2bca92f399d5c330c324879cea"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}



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