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

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-23019
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-01-31 12:16:05 UTC
Updated2026-07-14 13:18:22 UTC
DescriptionIn 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.

Risk And Classification

Primary CVSS: v3.1 5.5 MEDIUM from [email protected]

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Problem Types: CWE-476

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Linux Linux Kernel All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 34dd1710f5a3c9a7dc78e1ff6de69a19d407db25 8a4333b2818f0d853b43e139936c20659366e4a0 git Not specified
CNA Linux Linux affected 34dd1710f5a3c9a7dc78e1ff6de69a19d407db25 325aea74be7e192b5c947c782da23b0d19a5fda2 git Not specified
CNA Linux Linux affected 34dd1710f5a3c9a7dc78e1ff6de69a19d407db25 94e070cd50790317fba7787ae6006934b7edcb6f git Not specified
CNA Linux Linux affected 34dd1710f5a3c9a7dc78e1ff6de69a19d407db25 3950054c9512add0cc79ab7e72b6d2f9f675e25b git Not specified
CNA Linux Linux affected 34dd1710f5a3c9a7dc78e1ff6de69a19d407db25 326a4b7e61d01db3507f71c8bb5e85362f607064 git Not specified
CNA Linux Linux affected 34dd1710f5a3c9a7dc78e1ff6de69a19d407db25 a428e0da1248c353557970848994f35fd3f005e2 git Not specified
CNA Linux Linux affected 5.10 Not specified
CNA Linux Linux unaffected 5.10 semver Not specified
CNA Linux Linux unaffected 5.15.198 5.15.* semver Not specified
CNA Linux Linux unaffected 6.1.161 6.1.* semver Not specified
CNA Linux Linux unaffected 6.6.121 6.6.* semver Not specified
CNA Linux Linux unaffected 6.12.66 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.6 6.18.* semver Not specified
CNA Linux Linux unaffected 6.19 * original_commit_for_fix Not specified
ADP Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP affected V3.1.6 * custom Not specified
ADP Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP affected V3.1.6 * custom Not specified
ADP Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP affected V3.1.6 * custom Not specified
ADP Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP affected V3.1.6 * custom Not specified
ADP Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP affected V3.1.6 * custom Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/a428e0da1248c353557970848994f35fd3f005e2 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/326a4b7e61d01db3507f71c8bb5e85362f607064 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
cert-portal.siemens.com/productcert/html/ssa-019113.html 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e cert-portal.siemens.com
git.kernel.org/stable/c/8a4333b2818f0d853b43e139936c20659366e4a0 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/325aea74be7e192b5c947c782da23b0d19a5fda2 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/94e070cd50790317fba7787ae6006934b7edcb6f 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/3950054c9512add0cc79ab7e72b6d2f9f675e25b 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
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NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

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