---
id: CVE-2019-9169
title: >-
  In the GNU C Library (aka glibc or libc6) through 2.29, proceed_next_node in
  posix/regexec.c has a heap-based buffer over-read via an attempted
  case-insensitive regular-expression match.
summary: >-
  In the GNU C Library (aka glibc or libc6) through 2.29, proceed_next_node in
  posix/regexec.c has a heap-based buffer over-read via an attempted
  case-insensitive regular-expression match.
severity: critical
cvss: 9.8
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-125
vendor: gnu
product: glibc
affected:
  - glibc <= 2.29
  - cloud_backup
  - ontap_select_deploy_administration_utility
  - steelstore_cloud_integrated_storage
  - 'web_gateway >= 7.7.2.0, < 7.7.2.21'
  - 'web_gateway >= 7.8.2.0, < 7.8.2.8'
  - 'web_gateway >= 8.0.0, < 8.1.1'
  - ubuntu_linux = 16.04
  - ubuntu_linux = 18.04
  - ubuntu_linux = 19.10
patched:
  - web_gateway 8.1.1
published: '2019-02-26'
updated: '2026-10-14'
sourceUpdated: '2026-10-14T07:16:56.987'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2019-9169'
references:
  - url: 'http://www.securityfocus.com/bid/107160'
    label: cve@mitre.org
  - url: 'https://debbugs.gnu.org/cgi/bugreport.cgi?bug=34140'
    label: cve@mitre.org
  - url: 'https://debbugs.gnu.org/cgi/bugreport.cgi?bug=34142'
    label: cve@mitre.org
  - url: 'https://kc.mcafee.com/corporate/index?page=content&id=SB10278'
    label: cve@mitre.org
  - url: 'https://security.gentoo.org/glsa/202006-04'
    label: cve@mitre.org
  - url: 'https://security.netapp.com/advisory/ntap-20190315-0002/'
    label: cve@mitre.org
  - url: 'https://sourceware.org/bugzilla/show_bug.cgi?id=24114'
    label: cve@mitre.org
  - url: >-
      https://sourceware.org/git/gitweb.cgi?p=glibc.git%3Ba=commit%3Bh=583dd860d5b833037175247230a328f0050dbfe9
    label: cve@mitre.org
  - url: 'https://support.f5.com/csp/article/K54823184'
    label: cve@mitre.org
  - url: 'https://usn.ubuntu.com/4416-1/'
    label: cve@mitre.org
  - url: 'https://www.oracle.com/security-alerts/cpuapr2022.html'
    label: cve@mitre.org
  - url: 'http://www.securityfocus.com/bid/107160'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://debbugs.gnu.org/cgi/bugreport.cgi?bug=34140'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://debbugs.gnu.org/cgi/bugreport.cgi?bug=34142'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://kc.mcafee.com/corporate/index?page=content&id=SB10278'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://security.gentoo.org/glsa/202006-04'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://security.netapp.com/advisory/ntap-20190315-0002/'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://sourceware.org/bugzilla/show_bug.cgi?id=24114'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: >-
      https://sourceware.org/git/gitweb.cgi?p=glibc.git%3Ba=commit%3Bh=583dd860d5b833037175247230a328f0050dbfe9
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://support.f5.com/csp/article/K54823184'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://usn.ubuntu.com/4416-1/'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://www.oracle.com/security-alerts/cpuapr2022.html'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://cert-portal.siemens.com/productcert/html/ssa-398330.html'
    label: 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2019/cve-2019-9169.json
  - url: 'https://access.redhat.com/security/cve/CVE-2019-9169'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=1684057'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2019-9169'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2019-9169'
  - url: 'https://access.redhat.com/errata/RHSA-2021:1585'
tags:
  - nvd
  - csaf
  - vex
  - red-hat
  - score-dispute
epss: 0.04731
epssPercentile: 0.91655
ingestedAt: '2026-10-14T07:21:04.806Z'
scores:
  nvd: 9.8
  vendor: 6.5
---

## Overview

In the GNU C Library (aka glibc or libc6) through 2.29, proceed_next_node in posix/regexec.c has a heap-based buffer over-read via an attempted case-insensitive regular-expression match.

## Affected

- `glibc <= 2.29`
- `cloud_backup`
- `ontap_select_deploy_administration_utility`
- `steelstore_cloud_integrated_storage`
- `web_gateway >= 7.7.2.0, < 7.7.2.21`
- `web_gateway >= 7.8.2.0, < 7.8.2.8`
- `web_gateway >= 8.0.0, < 8.1.1`
- `ubuntu_linux = 16.04`
- `ubuntu_linux = 18.04`
- `ubuntu_linux = 19.10`

## Remediation

Upgrade past the affected range:

- `web_gateway 8.1.1`

## Vendor advisories

- **RHSA-2021:1585** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream (v. 8), Red Hat Enterprise Linux BaseOS (v. 8), Red Hat CodeReady Linux Builder (v. 8) · released 2021-05-18 · [advisory](https://access.redhat.com/errata/RHSA-2021:1585)
- **Red Hat VEX** · Moderate · affected: Red Hat Enterprise Linux 5, Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7 · no fix planned: Red Hat Enterprise Linux 5, Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7 · updated 2026-10-14 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2019/cve-2019-9169.json)