6.1

CVE-2026-81879

Exploit

radare2: Heap out-of-bounds read in radare2 ELF PN_XNUM handling

radare2 is a UNIX-like reverse engineering framework and command-line toolset. Prior to 6.2.0, radare2's ELF PN_XNUM handling was vulnerable because the ELF parser allocated the program-header array using the resolved PN_XNUM count but several consumers still iterated with the original e_phnum value of 65535. The vulnerability is triggered by processing a crafted ELF file with e_phnum = 0xffff and a much smaller resolved count in shdr[0].sh_info. Consumers iterated beyond the allocated program-header array. This can cause a heap out-of-bounds read and process termination, resulting in denial of service; memory disclosure and code execution have not been demonstrated. This issue is fixed in version 6.2.0.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Radare ≫ Radare2 Version < 6.2.0
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.18% 0.081
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
NIST 6.1 1.8 4.2
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H
security-advisories@github.com 5.5 1.8 3.6
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
CWE-125 Out-of-bounds Read

The product reads data past the end, or before the beginning, of the intended buffer.

https://github.com/radareorg/radare2/releases/tag/6.2.0
Release Notes
https://github.com/radareorg/radare2/security/advisories/GHSA-jqfq-hvcp-xh4p
Patch
Vendor Advisory
https://github.com/radareorg/radare2/issues/26223
Vendor Advisory
Exploit
Issue Tracking
Mitigation
https://github.com/radareorg/radare2/pull/26178
Patch
https://github.com/radareorg/radare2/commit/9449b07579c19b6b187c1a0918fbec2cef1a036e
Patch