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CVE-2025-71292 (GCVE-0-2025-71292)

Vulnerability from cvelistv5 – Published: 2026-05-06 11:32 – Updated: 2026-08-05 12:12
VLAI
Title
jfs: nlink overflow in jfs_rename
Summary
In the Linux kernel, the following vulnerability has been resolved: jfs: nlink overflow in jfs_rename If nlink is maximal for a directory (-1) and inside that directory you perform a rename for some child directory (not moving from the parent), then the nlink of the first directory is first incremented and later decremented. Normally this is fine, but when nlink = -1 this causes a wrap around to 0, and then drop_nlink issues a warning. After applying the patch syzbot no longer issues any warnings. I also ran some basic fs tests to look for any regressions.
Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 2108829a59f081e822fdab8c2cd7131deb8aa8a1 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < b4330a0d0947fbdc9d445cbbeabd8cc910a8c9ca (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < a3d66089e50a6e0142f8884471f74292102ea9aa (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < f70fcbc2ac7c24f087a2c895c5753aa730b1e479 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 5d77c36cd4b698649f5c30c5f6c084f4f61d1880 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < fe136426e30ca6debcf916fd6a141555ed9fde74 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 93c325746ae59709b4f9bad4e3e4761c8d566c70 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 9218dc26fd922b09858ecd3666ed57dfd8098da8 (git)
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Linux Linux Affected: 2.6.12
Unaffected: 0 , < 2.6.12 (semver)
Unaffected: 5.10.252 , ≤ 5.10.* (semver)
Unaffected: 5.15.202 , ≤ 5.15.* (semver)
Unaffected: 6.1.165 , ≤ 6.1.* (semver)
Unaffected: 6.6.128 , ≤ 6.6.* (semver)
Unaffected: 6.12.75 , ≤ 6.12.* (semver)
Unaffected: 6.18.16 , ≤ 6.18.* (semver)
Unaffected: 6.19.6 , ≤ 6.19.* (semver)
Unaffected: 7.0 , ≤ * (original_commit_for_fix)
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I also\\nran some basic fs tests to look for any 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    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-07-30T08:32:31+00:00",
      "cve": "CVE-2025-71292",
      "id": "CVE-2025-71292",
      "initial_release_date": "2025-01-01T00:00:00+00:00",
      "product_status:known_affected": "14",
      "product_status:known_not_affected": "260",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: jfs: nlink overflow in jfs_rename",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-71292.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-09-02T12:32:42Z",
      "cve": "CVE-2025-71292",
      "id": "CVE-2025-71292",
      "initial_release_date": "2026-05-07T02:24:30Z",
      "product_status:known_affected": "4",
      "product_status:known_not_affected": "381",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2025-71292",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2025-71292.json",
      "version": "9"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.