CVE-2020-6096 (GCVE-0-2020-6096)

Vulnerability from cvelistv5 – Published: 2020-04-01 00:00 – Updated: 2026-02-13 20:07
VLAI
Summary
An exploitable signed comparison vulnerability exists in the ARMv7 memcpy() implementation of GNU glibc 2.30.9000. Calling memcpy() (on ARMv7 targets that utilize the GNU glibc implementation) with a negative value for the 'num' parameter results in a signed comparison vulnerability. If an attacker underflows the 'num' parameter to memcpy(), this vulnerability could lead to undefined behavior such as writing to out-of-bounds memory and potentially remote code execution. Furthermore, this memcpy() implementation allows for program execution to continue in scenarios where a segmentation fault or crash should have occurred. The dangers occur in that subsequent execution and iterations of this code will be executed with this corrupted data.
Severity
8.1 (High)
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-02-13 20:06 UTC
CWE
  • CWE-195 - Signed to Unsigned Conversion Error
Assigner
References
Impacted products
Vendor Product Version
n/a GNU glibc Affected: 2.30.9000
Show details on NVD website
To clipboard 

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