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nilfs2: fix infinite loop in nilfs_clean_segments()

Type: advisorySource: Official CVE List1 source record

In the Linux kernel, the following vulnerability has been resolved: nilfs2: fix infinite loop in nilfs_clean_segments() syzbot reported a hung task in nilfs_transaction_begin(). This occurs because the cleaner ioctl falls into an infinite loop if nilfs_segctor_construct() repeatedly returns -EROFS (e.g. the device is remounted as read-only after an I/O error). Currently in nilfs_clean_segments(), if err is non-zero, it logs the error and sleeps but doesn't abort when it encounters a terminal error like -EROFS. This causes the thread to loop forever. Fix this by breaking out of the loop if nilfs_segctor_construct() returns -EROFS. This matches the behaviour in nilfs_segctor_write_out(), which also handles -EROFS.

Announced Source revision 1
Original source ↗

CVE-2026-90420

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: cve:CVE-2026-90420

Linux

Source reference: /containers/cna/affected/0/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Linux

Source reference: /containers/cna/affected/1/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "9ff05123e3bfbb1d2b68ba1d9bf1f7d1dffc1453",
        "lessThan": "e3e9367dae1a6392cbb14ab0b2ab5edbf39735c3",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "9ff05123e3bfbb1d2b68ba1d9bf1f7d1dffc1453",
        "lessThan": "217b967ad7887a3e1ebc08f46f6484e081acd4b4",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "9ff05123e3bfbb1d2b68ba1d9bf1f7d1dffc1453",
        "lessThan": "3bcdbdaac884a4baa59716cf9bd9470c75276e2d",
        "versionType": "git"
      },
      {
        "status": "affected",
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        "lessThan": "d7afca8e4efbf4c455b4663c29ae59fde2f1b671",
        "versionType": "git"
      },
      {
        "status": "affected",
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        "lessThan": "c07e5ad6539e7e9350d5c65cbf8adb69d1711b15",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "9ff05123e3bfbb1d2b68ba1d9bf1f7d1dffc1453",
        "lessThan": "1fc6df85b4954b6fda9c351843aaca3c06f66d8d",
        "versionType": "git"
      },
      {
        "status": "affected",
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        "versionType": "git"
      },
      {
        "status": "affected",
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        "lessThan": "ce5a5ad1a8330a2fcfdd9ec2ab341be739e89a18",
        "versionType": "git"
      }
    ],
    "programFiles": [
      "fs/nilfs2/segment.c"
    ],
    "defaultStatus": "unaffected"
  },
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "2.6.30"
      },
      {
        "status": "unaffected",
        "version": "0",
        "lessThan": "2.6.30",
        "versionType": "semver"
      },
      {
        "status": "unaffected",
        "version": "5.10.270",
        "versionType": "semver",
        "lessThanOrEqual": "5.10.*"
      },
      {
        "status": "unaffected",
        "version": "5.15.221",
        "versionType": "semver",
        "lessThanOrEqual": "5.15.*"
      },
      {
        "status": "unaffected",
        "version": "6.1.188",
        "versionType": "semver",
        "lessThanOrEqual": "6.1.*"
      },
      {
        "status": "unaffected",
        "version": "6.6.157",
        "versionType": "semver",
        "lessThanOrEqual": "6.6.*"
      },
      {
        "status": "unaffected",
        "version": "6.12.110",
        "versionType": "semver",
        "lessThanOrEqual": "6.12.*"
      },
      {
        "status": "unaffected",
        "version": "6.18.52",
        "versionType": "semver",
        "lessThanOrEqual": "6.18.*"
      },
      {
        "status": "unaffected",
        "version": "7.2.6",
        "versionType": "semver",
        "lessThanOrEqual": "7.2.*"
      },
      {
        "status": "unaffected",
        "version": "7.3",
        "versionType": "original_commit_for_fix",
        "lessThanOrEqual": "*"
      }
    ],
    "programFiles": [
      "fs/nilfs2/segment.c"
    ],
    "defaultStatus": "affected"
  }
]
Related CVEs
CVE-2026-90420

Source reference: /cveMetadata/cveId

Publisher severity

No explicit severity was provided.

Event
#36739 · Revision 1
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