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FKIE_CVE-2026-89458

Vulnerability from fkie_nvd - Published: 2026-09-11 20:19 - Updated: 2026-09-14 13:19
Severity
Summary
In the Linux kernel, the following vulnerability has been resolved: s390/dasd: Do not complete a failed ESE read as successful dasd_int_handler() completes an NRF read of an unallocated ESE track by calling ese_read() and unconditionally marking the request DASD_CQR_SUCCESS. dasd_eckd_ese_read() can return an error before it has zeroed the destination buffer: a failed sense-data parse or a current track outside the requested range both return early, leaving the destination pages untouched. The request is still completed successfully, so the block layer is handed stale / uninitialized memory instead of zeros. Check the ese_read() return value and fail the request through the normal error path instead of forcing DASD_CQR_SUCCESS.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/52b331c99baac653ca794bd8487c8ec4de8db203
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/55f4df40178cdfede0d7ae848fbab00efa9b95c1
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/77168af195d04b34c6de62b874624e74d64cef8d
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/8cb96cffceead3cbd0541154d7ecc5e6474edda1
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/921ff697bb6f7067059793becf8b2d00de71ce41
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/b0d94dd6e82df396e2254c8b0f25eff7d19c2e7f
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/c9adf8399732306dfc97b3adb4778038743e3f5e
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/cddb447c62466f3076938ce120028d7b591f9f37
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/s390/block/dasd.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "8cb96cffceead3cbd0541154d7ecc5e6474edda1",
              "status": "affected",
              "version": "5e6bdd37c5526ef01326df5dabb93011ee89237e",
              "versionType": "git"
            },
            {
              "lessThan": "77168af195d04b34c6de62b874624e74d64cef8d",
              "status": "affected",
              "version": "5e6bdd37c5526ef01326df5dabb93011ee89237e",
              "versionType": "git"
            },
            {
              "lessThan": "921ff697bb6f7067059793becf8b2d00de71ce41",
              "status": "affected",
              "version": "5e6bdd37c5526ef01326df5dabb93011ee89237e",
              "versionType": "git"
            },
            {
              "lessThan": "55f4df40178cdfede0d7ae848fbab00efa9b95c1",
              "status": "affected",
              "version": "5e6bdd37c5526ef01326df5dabb93011ee89237e",
              "versionType": "git"
            },
            {
              "lessThan": "c9adf8399732306dfc97b3adb4778038743e3f5e",
              "status": "affected",
              "version": "5e6bdd37c5526ef01326df5dabb93011ee89237e",
              "versionType": "git"
            },
            {
              "lessThan": "52b331c99baac653ca794bd8487c8ec4de8db203",
              "status": "affected",
              "version": "5e6bdd37c5526ef01326df5dabb93011ee89237e",
              "versionType": "git"
            },
            {
              "lessThan": "b0d94dd6e82df396e2254c8b0f25eff7d19c2e7f",
              "status": "affected",
              "version": "5e6bdd37c5526ef01326df5dabb93011ee89237e",
              "versionType": "git"
            },
            {
              "lessThan": "cddb447c62466f3076938ce120028d7b591f9f37",
              "status": "affected",
              "version": "5e6bdd37c5526ef01326df5dabb93011ee89237e",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "fbbacd0dcbc3ae9398c569dbea96ae4b5ad97e04",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "5f7c9989f11305aaa43e0f4378f4f070022a9f2b",
              "versionType": "git"
            },
            {
              "lessThan": "5.5",
              "status": "affected",
              "version": "5.4.26",
              "versionType": "semver"
            },
            {
              "lessThan": "5.6",
              "status": "affected",
              "version": "5.5.10",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/s390/block/dasd.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.6"
            },
            {
              "lessThan": "5.6",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.270",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.221",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.188",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.157",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.109",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.50",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.4",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3-rc1",
              "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\ns390/dasd: Do not complete a failed ESE read as successful\n\ndasd_int_handler() completes an NRF read of an unallocated ESE track by\ncalling ese_read() and unconditionally marking the request\nDASD_CQR_SUCCESS. dasd_eckd_ese_read() can return an error before it has\nzeroed the destination buffer: a failed sense-data parse or a current\ntrack outside the requested range both return early, leaving the\ndestination pages untouched. The request is still completed successfully,\nso the block layer is handed stale / uninitialized memory instead of\nzeros.\n\nCheck the ese_read() return value and fail the request through the normal\nerror path instead of forcing DASD_CQR_SUCCESS."
    }
  ],
  "id": "CVE-2026-89458",
  "lastModified": "2026-09-14T13:19:02.220",
  "metrics": {},
  "published": "2026-09-11T20:19:26.657",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/52b331c99baac653ca794bd8487c8ec4de8db203"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/55f4df40178cdfede0d7ae848fbab00efa9b95c1"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/77168af195d04b34c6de62b874624e74d64cef8d"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/8cb96cffceead3cbd0541154d7ecc5e6474edda1"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/921ff697bb6f7067059793becf8b2d00de71ce41"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/b0d94dd6e82df396e2254c8b0f25eff7d19c2e7f"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/c9adf8399732306dfc97b3adb4778038743e3f5e"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/cddb447c62466f3076938ce120028d7b591f9f37"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}



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