---
id: CVE-2022-27943
title: >-
  libiberty/rust-demangle.c in GNU GCC 11.2 allows stack consumption in
  demangle_const, as demonstrated by nm-new.
summary: >-
  libiberty/rust-demangle.c in GNU GCC 11.2 allows stack consumption in
  demangle_const, as demonstrated by nm-new.
severity: medium
cvss: 5.5
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H'
cwe:
  - CWE-674
  - CWE-674
vendor: gnu
product: gcc
affected:
  - gcc = 11.2
  - fedora = 36
published: '2022-03-26'
updated: '2026-10-08'
sourceUpdated: '2026-10-08T19:16:56.007'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2022-27943'
references:
  - url: 'https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105039'
    label: cve@mitre.org
  - url: >-
      https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/H424YXGW7OKXS2NCAP35OP6Y4P4AW6VG/
    label: cve@mitre.org
  - url: 'https://sourceware.org/bugzilla/show_bug.cgi?id=28995'
    label: cve@mitre.org
  - url: 'https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105039'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: >-
      https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/H424YXGW7OKXS2NCAP35OP6Y4P4AW6VG/
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://sourceware.org/bugzilla/show_bug.cgi?id=28995'
    label: af854a3a-2127-422b-91ae-364da2661108
tags:
  - nvd
epss: 0.00906
epssPercentile: 0.58638
ingestedAt: '2026-10-08T20:06:22.172Z'
---

## Overview

libiberty/rust-demangle.c in GNU GCC 11.2 allows stack consumption in demangle_const, as demonstrated by nm-new.

## Affected

- `gcc = 11.2`
- `fedora = 36`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.