Out-of-bounds Read Affecting radare2 package, versions *


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.18% (7th percentile)

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  • Snyk IDSNYK-DEBIANUNSTABLE-RADARE2-20067660
  • published24 Sept 2026
  • disclosed22 Sept 2026

Introduced: 22 Sep 2026

NewCVE-2026-81879  (opens in a new tab)
CWE-125  (opens in a new tab)

How to fix?

There is no fixed version for Debian:unstable radare2.

NVD Description

Note: Versions mentioned in the description apply only to the upstream radare2 package and not the radare2 package as distributed by Debian. See How to fix? for Debian:unstable relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1