CVE-2019-9169: canonical ubuntu_linux Out-of-bounds Read
Vulnerability summary
CVE-2019-9169 is a critical (CVSS 9.8) Out-of-bounds Read vulnerability in canonical ubuntu_linux. EPSS estimates a 4.73% chance of exploitation in the next 30 days, higher than 91.8% of scored vulnerabilities. 2 public exploits are recorded.
Public exploit (reference, Date unknown)
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 7 · Related 6Timeline
- 26-02-2019PublishedVulnerability first disclosed.
- 14-10-2026Last modifiedVulnerability information updated.
Description
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.
CVSS metrics
5 scores · 3 sources · 3 versions- OSV · UbuntuEcosystem advisory · calculated9.8CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- OSV · DebianEcosystem advisory · calculated9.8CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS trend
Probability
4.73%
Chance of exploitation in the next 30 days
Percentile
92%
Versus all other CVEs
30-day change
No change 0.00 pp
From 4.73% on 04-10-2026
Known exploited
Compare KEV catalogsNot in the CISA KEV catalog.
Not in the ENISA CNW catalog.
Not in the CIRCL catalog.
Public exploits
2 foundExploit Reference (debbugs.gnu.org)
Maturity: unknown
Exploit Reference (debbugs.gnu.org)
Maturity: unknown
Weaknesses
CWE · root causeAffected systems
Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.
Netapp2 products
Suse2 products
- glibc&distro=SUSE Linux Enterprise Point of Sale 11 SP3< 2.11.3-17.110.33.1
- glibc&distro=SUSE Linux Enterprise Server 11 SP4-LTSS< 2.11.3-17.110.33.1
Canonical1 product
- ubuntu_linuxEOL16.04 | 18.04 | 19.10
Debian1 product
- glibc< 2.28-9
Gnu1 product
- glibc≤ 2.29
Mcafee1 product
- web_gateway≥ 7.7.2.0, < 7.7.2.21 | ≥ 7.8.2.0, < 7.8.2.8 | ≥ 8.0.0, < 8.1.1
Ubuntu1 product
- glibc< 2.23-0ubuntu11.2 | < 2.27-3ubuntu1.2
7 vendors · 9 products
References
20 links- sourceware.org/bugzilla/show_bug.cgi?id=24114X Refsource MISCIssue TrackingPatchThird Party Advisory