CVE-2026-90134 (GCVE-0-2026-90134)

Vulnerability from cvelistv5 – Published: 2026-09-17 16:06 – Updated: 2026-10-19 08:58
VLAI
Title
ntfs: fix kmap_local_page() usage in compress
Summary
In the Linux kernel, the following vulnerability has been resolved: ntfs: fix kmap_local_page() usage in compress Several compressed I/O paths discard the address returned by kmap_local_page() and later access or unmap the page using page_address(). This is invalid for highmem pages, and local mappings must also be unmapped using the address returned by kmap_local_page(). Map each destination page in ntfs_decompress() only while producing the current sub-block. Use memcpy_from_page(), memcpy_to_page(), and memzero_page() for the other page accesses. Remove unnecessary local mappings from ntfs_write_cb(), where pages are accessed through the vmap() mapping.
Severity
No CVSS data available.
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 6639 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 495e90fa334828d4119061e2726af51d0a0fb4ed , < 950e2ecc7aec21af24b05bc661a097a81c670409 (git)
Affected: 495e90fa334828d4119061e2726af51d0a0fb4ed , < 6e03fbd5f772ad24ea64f7632e4d0d73184787ca (git)
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Linux Linux Affected: 7.1
Unaffected: 0 , < 7.1 (semver)
Unaffected: 7.2.6 , ≤ 7.2.* (semver)
Unaffected: 7.3 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
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        }
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      "providerMetadata": {
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    "dateReserved": "2026-09-11T19:38:34.788Z",
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          {
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            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nntfs: fix kmap_local_page() usage in compress\n\nSeveral compressed I/O paths discard the address returned by\nkmap_local_page() and later access or unmap the page using page_address().\nThis is invalid for highmem pages, and local mappings must also be unmapped\nusing the address returned by kmap_local_page().\n\nMap each destination page in ntfs_decompress() only while producing the\ncurrent sub-block. Use memcpy_from_page(), memcpy_to_page(), and\nmemzero_page() for the other page accesses. Remove unnecessary local\nmappings from ntfs_write_cb(), where pages are accessed through the vmap()\nmapping."
          }
        ],
        "id": "CVE-2026-90134",
        "lastModified": "2026-10-19T09:19:03.197",
        "metrics": {},
        "published": "2026-09-17T17:17:05.950",
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      "product_status:known_not_affected": "203",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: ntfs: fix kmap_local_page() usage in compress",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-90134.json",
      "version": "3"
    }
  }
}



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