LoongArch: Fix missing NULL checks for kstrdup()

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Summary

CVECVE-2026-31559
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-04-24 15:16:30 UTC
Updated2026-04-27 20:13:21 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: LoongArch: Fix missing NULL checks for kstrdup() 1. Replace "of_find_node_by_path("/")" with "of_root" to avoid multiple calls to "of_node_put()". 2. Fix a potential kernel oops during early boot when memory allocation fails while parsing CPU model from device tree.

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

EPSS: 0.000200000 probability, percentile 0.056500000 (date 2026-04-27)

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 facc69f43502c135c16b97d5ded7253f15597912 5e7fde2c551f86e6c3de3fd7a9b1f52806ac8db0 git Not specified
CNA Linux Linux affected 70a2365e18affc5ebdaab1ca6a0b3c4f3aac2ee8 a1da957c25cf751a2dce8fb7777f82ccbac0cb3e git Not specified
CNA Linux Linux affected 70a2365e18affc5ebdaab1ca6a0b3c4f3aac2ee8 b61a309743322fb57fb9afa9aa3495ac758e4f5e git Not specified
CNA Linux Linux affected 70a2365e18affc5ebdaab1ca6a0b3c4f3aac2ee8 3a28daa9b7d7c2ddf2c722e9e95d7e0928bf0cd1 git Not specified
CNA Linux Linux affected 620805dc674eab3055543496a7ef25beb9ffd2a8 git Not specified
CNA Linux Linux affected 8dfeedf9eceadc1a2fc9066b4c5230690d1cad48 git Not specified
CNA Linux Linux affected 6.17 Not specified
CNA Linux Linux unaffected 6.17 semver Not specified
CNA Linux Linux unaffected 6.12.80 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.21 6.18.* semver Not specified
CNA Linux Linux unaffected 6.19.11 6.19.* semver Not specified
CNA Linux Linux unaffected 7.0 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/b61a309743322fb57fb9afa9aa3495ac758e4f5e 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/5e7fde2c551f86e6c3de3fd7a9b1f52806ac8db0 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/a1da957c25cf751a2dce8fb7777f82ccbac0cb3e 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/3a28daa9b7d7c2ddf2c722e9e95d7e0928bf0cd1 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
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