Vulnerability-Lookup

FKIE_CVE-2026-23019

Vulnerability from fkie_nvd - Published: 2026-01-31 12:16 - Updated: 2026-03-25 15:55

Severity ?

5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

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.

References

URL	Tags
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/325aea74be7e192b5c947c782da23b0d19a5fda2	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/326a4b7e61d01db3507f71c8bb5e85362f607064	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/3950054c9512add0cc79ab7e72b6d2f9f675e25b	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/8a4333b2818f0d853b43e139936c20659366e4a0	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/94e070cd50790317fba7787ae6006934b7edcb6f	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/a428e0da1248c353557970848994f35fd3f005e2	Patch

Impacted products

Vendor	Product	Version
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	5.10
linux	linux_kernel	6.19
linux	linux_kernel	6.19
linux	linux_kernel	6.19
linux	linux_kernel	6.19
linux	linux_kernel	6.19
linux	linux_kernel	6.19
linux	linux_kernel	6.19
linux	linux_kernel	6.19

JSON

To clipboard

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      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: marvell: prestera: fix NULL dereference on devlink_alloc() failure\n\ndevlink_alloc() may return NULL on allocation failure, but\nprestera_devlink_alloc() unconditionally calls devlink_priv() on\nthe returned pointer.\n\nThis leads to a NULL pointer dereference if devlink allocation fails.\nAdd a check for a NULL devlink pointer and return NULL early to avoid\nthe crash."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nnet: marvell: prestera: corregir desreferencia NULL en caso de fallo de devlink_alloc()\n\ndevlink_alloc() puede devolver NULL en caso de fallo de asignaci\u00f3n, pero prestera_devlink_alloc() llama incondicionalmente a devlink_priv() sobre el puntero devuelto.\n\nEsto conduce a una desreferencia de puntero NULL si la asignaci\u00f3n de devlink falla.\nA\u00f1adir una comprobaci\u00f3n para un puntero devlink NULL y devolver NULL anticipadamente para evitar el fallo."
    }
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  "id": "CVE-2026-23019",
  "lastModified": "2026-03-25T15:55:44.020",
  "metrics": {
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        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
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        "impactScore": 3.6,
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}

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

Vulnerability from cvelistv5 – Published: 2026-01-31 11:39 – Updated: 2026-02-09 08:37

Title

net: marvell: prestera: fix NULL dereference on devlink_alloc() failure

Summary

Severity ?

No CVSS data available.

Assigner

Linux

References

URL

Tags

	https://git.kernel.org/stable/c/8a4333b2818f0d853…
	https://git.kernel.org/stable/c/325aea74be7e192b5…
	https://git.kernel.org/stable/c/94e070cd50790317f…
	https://git.kernel.org/stable/c/3950054c9512add0c…
	https://git.kernel.org/stable/c/326a4b7e61d01db35…
	https://git.kernel.org/stable/c/a428e0da1248c3535…

Impacted products

Vendor

Product

Version

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)

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)

Show details on NVD website

JSON

To clipboard

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  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/marvell/prestera/prestera_devlink.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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              "status": "unaffected",
              "version": "6.19",
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          "url": "https://git.kernel.org/stable/c/a428e0da1248c353557970848994f35fd3f005e2"
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      "title": "net: marvell: prestera: fix NULL dereference on devlink_alloc() failure",
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    "datePublished": "2026-01-31T11:39:03.179Z",
    "dateReserved": "2026-01-13T15:37:45.940Z",
    "dateUpdated": "2026-02-09T08:37:12.887Z",
    "state": "PUBLISHED"
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}

Sightings

Author	Source	Type	Date

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.

Action not permitted

FKIE_CVE-2026-23019

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

Tags

Sightings

Nomenclature