staging: rtl8723bs: os_dep: avoid NULL pointer dereference in rtw_cbuf_alloc

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-46305
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-06-08 17:16:49 UTC
Updated2026-07-08 14:47:58 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: staging: rtl8723bs: os_dep: avoid NULL pointer dereference in rtw_cbuf_alloc The return value of kzalloc_flex() is used without ensuring that the allocation succeeded, and the pointer is dereferenced unconditionally. Guard the access to the allocated structure to avoid a potential NULL pointer dereference if the allocation fails.

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: 0.001000000 probability, percentile 0.010450000 (date 2026-07-09)

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
Operating System Linux Linux Kernel 7.1 rc1 All All
Operating System Linux Linux Kernel 7.1 rc2 All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 980cd426a25747daf8ed25e2a1904b2d26ffbb3d 0a5f411becfb7c57aa89827213d31ef23a03d75a git Not specified
CNA Linux Linux affected 980cd426a25747daf8ed25e2a1904b2d26ffbb3d bc851db06045a40c18233dd76ef0562d7f8bb6db git Not specified
CNA Linux Linux affected 7.0 Not specified
CNA Linux Linux unaffected 7.0 semver Not specified
CNA Linux Linux unaffected 7.0.7 7.0.* semver Not specified
CNA Linux Linux unaffected 7.1 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/0a5f411becfb7c57aa89827213d31ef23a03d75a 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/bc851db06045a40c18233dd76ef0562d7f8bb6db 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
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