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": "2026-07-24T02:46:06Z",
      "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": "289",
      "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": "8"
    }
  }
}



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Taxonomy of the tags.





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.