CVE-2026-89838

Full vulnerability record from the local CVENow database.
Description

In the Linux kernel, the following vulnerability has been resolved: f2fs: limit recovery filename logging to stored length F2FS stores recovery filenames as a length plus a fixed-size i_name buffer. The buffer is not NUL-terminated, but recover_inode() and recover_dentry() print it with %s. For a 255-byte filename, recovery logging can read past i_name into the following raw inode fields. Print the name with a precision bounded by i_namelen and F2FS_NAME_LEN.
Severity
HIGH
CVSS score
7.1 (v3.1)
Vulnerability status
Received
Source identifier
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Published
2026-09-16 11:16:50.620000
Last modified
2026-10-30 13:20:31.010000
View original CVE JSON
{
  "id": "CVE-2026-89838",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "published": "2026-09-16T11:16:50.620",
  "lastModified": "2026-10-30T13:20:31.010",
  "vulnStatus": "Received",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nf2fs: limit recovery filename logging to stored length\n\nF2FS stores recovery filenames as a length plus a fixed-size i_name\nbuffer.  The buffer is not NUL-terminated, but recover_inode() and\nrecover_dentry() print it with %s.\n\nFor a 255-byte filename, recovery logging can read past i_name into the\nfollowing raw inode fields.\n\nPrint the name with a precision bounded by i_namelen and F2FS_NAME_LEN."
    }
  ],
  "affected": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "affectedData": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "programFiles": [
            "fs/f2fs/recovery.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "versions": [
            {
              "version": "f356fe0cba0e3523e538987916bd2acedd4e6f41",
              "lessThan": "b8ac8b14b9d92dd2e1cb05fa8994f41f701fbf28",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "f356fe0cba0e3523e538987916bd2acedd4e6f41",
              "lessThan": "450ab2e5dbe0ef6e3ed73214256565f6f003d62a",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "f356fe0cba0e3523e538987916bd2acedd4e6f41",
              "lessThan": "3d02c7c8446f5d6793ac67f93bf3f84bf24e3f25",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "f356fe0cba0e3523e538987916bd2acedd4e6f41",
              "lessThan": "e754120f8ede55cc773ade108cf7e5b17c859c46",
              "versionType": "git",
              "status": "affected"
            },
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              "version": "f356fe0cba0e3523e538987916bd2acedd4e6f41",
              "lessThan": "7ab1780074943508534343e1e5e5ab0c9ef9dd7b",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "f356fe0cba0e3523e538987916bd2acedd4e6f41",
              "lessThan": "35c5abccd0924b02ad34126f562d93c8d75b0831",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "f356fe0cba0e3523e538987916bd2acedd4e6f41",
              "lessThan": "317d32e1a8deaf1c01c388badc667334c39e62ca",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "f356fe0cba0e3523e538987916bd2acedd4e6f41",
              "lessThan": "01027b2fcb74dade59fb833b51023f6593b6a9a2",
              "versionType": "git",
              "status": "affected"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "programFiles": [
            "fs/f2fs/recovery.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "versions": [
            {
              "version": "3.11",
              "status": "affected"
            },
            {
              "version": "0",
              "lessThan": "3.11",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "5.10.273",
              "lessThanOrEqual": "5.10.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "5.15.224",
              "lessThanOrEqual": "5.15.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.1.191",
              "lessThanOrEqual": "6.1.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.6.160",
              "lessThanOrEqual": "6.6.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.12.112",
              "lessThanOrEqual": "6.12.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.18.53",
              "lessThanOrEqual": "6.18.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "7.2.5",
              "lessThanOrEqual": "7.2.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "7.3",
              "lessThanOrEqual": "*",
              "versionType": "original_commit_for_fix",
              "status": "unaffected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H",
          "baseScore": 7.1,
          "baseSeverity": "HIGH",
          "attackVector": "LOCAL",
          "attackComplexity": "LOW",
          "privilegesRequired": "LOW",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "NONE",
          "availabilityImpact": "HIGH"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 5.2
      }
    ]
  },
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/01027b2fcb74dade59fb833b51023f6593b6a9a2",
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    },
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    {
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      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
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    {
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}