radare2: Uncontrolled memory allocation in radare2 dmp64 parser

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-81886
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-09-22 16:18:03 UTC
Updated2026-09-22 18:17:20 UTC
Descriptionradare2 is a UNIX-like reverse engineering framework and command-line toolset. Prior to 6.2.0, radare2's Windows 64-bit crash-dump dmp64 parser was vulnerable because the Windows dmp64 parser used an input-controlled physical-memory-run PageCount directly as the bound of a per-page allocation loop. The vulnerability is triggered by opening a small crafted full-memory Windows crash dump. The parser repeatedly allocated and appended page descriptors without validating the count against the dump size. This can cause denial of service through excessive memory consumption and processing time. This issue is fixed in version 6.2.0.

Risk And Classification

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

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

Problem Types: CWE-770 | CWE-770 CWE-770: Allocation of Resources Without Limits or Throttling

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary5.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
3.1CNADECLARED5.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

CVSS v3.1 Breakdown

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

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Radareorg Radare2 affected < 6.2.0 Not specified

References

ReferenceSourceLinkTags
github.com/radareorg/radare2/security/advisories/GHSA-3xrx-wh64-8xr8 [email protected] github.com
github.com/radareorg/radare2/commit/a7519fdb4da6835c2cecd8fe248e7dd1133c... [email protected] github.com
github.com/radareorg/radare2/pull/26180 [email protected] github.com
github.com/radareorg/radare2/releases/tag/6.2.0 [email protected] github.com
github.com/radareorg/radare2/issues/26224 [email protected] github.com
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