CVE Vulnerabilities

CVE-2020-24978

Double Free

Published: Sep 04, 2020 | Modified: Sep 02, 2022

CVSS 3.x

9.8

CRITICAL

Source:

NVD

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

CVSS 2.x

7.5 HIGH

RedHat/V2

RedHat/V3

Ubuntu

Additional information

NVD	https://nvd.nist.gov/vuln/detail/CVE-2020-24978
CWE	https://cwe.mitre.org/data/definitions/415.html

In NASM 2.15.04rc3, there is a double-free vulnerability in pp_tokline asm/preproc.c. This is fixed in commit 8806c3ca007b84accac21dd88b900fb03614ceb7.

Weakness

The product calls free() twice on the same memory address, potentially leading to modification of unexpected memory locations.

Affected Software

Name	Vendor	Start Version	End Version
Netwide_assembler	Nasm	2.15.04-rc3 (including)	2.15.04-rc3 (including)

Potential Mitigations

References

https://bugzilla.nasm.us/show_bug.cgi?id=3392712

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