CVE-2025-37863 (GCVE-0-2025-37863)

Vulnerability from cvelistv5 – Published: 2025-05-09 06:43 – Updated: 2026-05-23 15:58
VLAI
Title
ovl: don't allow datadir only
Summary
In the Linux kernel, the following vulnerability has been resolved: ovl: don't allow datadir only In theory overlayfs could support upper layer directly referring to a data layer, but there's no current use case for this. Originally, when data-only layers were introduced, this wasn't allowed, only introduced by the "datadir+" feature, but without actually handling this case, resulting in an Oops. Fix by disallowing datadir without lowerdir.
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: cc0918b3582c98f12cfb30bf7496496d14bff3e9 , < 0874b629f65320778e7e3e206177770666d9db18 (git)
Affected: 24e16e385f2272b1a9df51337a5c32d28a29c7ad , < b9e3579213ba648fa23f780e8d53e99011c62331 (git)
Affected: 24e16e385f2272b1a9df51337a5c32d28a29c7ad , < 21d2ffb0e9838a175064c22f3a9de97d1f56f27d (git)
Affected: 24e16e385f2272b1a9df51337a5c32d28a29c7ad , < eb3a04a8516ee9b5174379306f94279fc90424c4 (git)
Affected: 6.6.23 , < 6.6.88 (semver)
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Linux Linux Affected: 6.7
Unaffected: 0 , < 6.7 (semver)
Unaffected: 6.6.88 , ≤ 6.6.* (semver)
Unaffected: 6.12.25 , ≤ 6.12.* (semver)
Unaffected: 6.14.4 , ≤ 6.14.* (semver)
Unaffected: 6.15 , ≤ * (original_commit_for_fix)
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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

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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.


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