CVE-2026-23019 (GCVE-0-2026-23019)

Vulnerability from cvelistv5 – Published: 2026-01-31 11:39 – Updated: 2026-05-11 21:58
VLAI
Title
net: marvell: prestera: fix NULL dereference on devlink_alloc() failure
Summary
In the Linux kernel, the following vulnerability has been resolved: net: marvell: prestera: fix NULL dereference on devlink_alloc() failure devlink_alloc() may return NULL on allocation failure, but prestera_devlink_alloc() unconditionally calls devlink_priv() on the returned pointer. This leads to a NULL pointer dereference if devlink allocation fails. Add a check for a NULL devlink pointer and return NULL early to avoid the crash.
Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 34dd1710f5a3c9a7dc78e1ff6de69a19d407db25 , < 8a4333b2818f0d853b43e139936c20659366e4a0 (git)
Affected: 34dd1710f5a3c9a7dc78e1ff6de69a19d407db25 , < 325aea74be7e192b5c947c782da23b0d19a5fda2 (git)
Affected: 34dd1710f5a3c9a7dc78e1ff6de69a19d407db25 , < 94e070cd50790317fba7787ae6006934b7edcb6f (git)
Affected: 34dd1710f5a3c9a7dc78e1ff6de69a19d407db25 , < 3950054c9512add0cc79ab7e72b6d2f9f675e25b (git)
Affected: 34dd1710f5a3c9a7dc78e1ff6de69a19d407db25 , < 326a4b7e61d01db3507f71c8bb5e85362f607064 (git)
Affected: 34dd1710f5a3c9a7dc78e1ff6de69a19d407db25 , < a428e0da1248c353557970848994f35fd3f005e2 (git)
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Linux Linux Affected: 5.10
Unaffected: 0 , < 5.10 (semver)
Unaffected: 5.15.198 , ≤ 5.15.* (semver)
Unaffected: 6.1.161 , ≤ 6.1.* (semver)
Unaffected: 6.6.121 , ≤ 6.6.* (semver)
Unaffected: 6.12.66 , ≤ 6.12.* (semver)
Unaffected: 6.18.6 , ≤ 6.18.* (semver)
Unaffected: 6.19 , ≤ * (original_commit_for_fix)
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{
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  }
}


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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.