CVE-2015-20109
end_pattern (called from internal_fnmatch) in the GNU C Library (aka glibc or libc6) before 2.22...
CVE-2015-20109 is a medium vulnerability (CVSS 5.5) in Gnu Glibc, published June 25, 2023. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.32%, the 24th percentile. Fixed in glibc 2.22-1.
end_pattern (called from internal_fnmatch) in the GNU C Library (aka glibc or libc6) before 2.22 might allow context-dependent attackers to cause a denial of service (application crash), as demonstrated by use of the fnmatch library function with the **(!() pattern. NOTE: this is not the same as CVE-2015-8984; also, some Linux distributions have fixed CVE-2015-8984 but have not fixed this additional fnmatch issue.
Attack profile
How easy it is to exploit
- Attack vector
- Local
- Complexity
- Low
- Privileges needed
- None
- User interaction
- Required
What an attacker can affect
- Confidentiality
- None
- Integrity
- None
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
5.5
end_pattern (called from internal_fnmatch) in the GNU C Library (aka glibc or libc6) before 2.22 might allow context-dependent attackers to cause a denial of service (application crash), as demonstrated by use of the fnmatch library function with the **(!() pattern. NOTE: this is not the same as CVE-2015-8984; also, some Linux distributions have fixed CVE-2015-8984 but have not fixed this additional fnmatch issue.
- Record
CVE-2015-20109- CVSS 3.1
- 5.5 Medium
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H - Weakness
- CWE-120
- Updated
- 2026-11-02
CVE List No score
end_pattern (called from internal_fnmatch) in the GNU C Library (aka glibc or libc6) before 2.22 might allow context-dependent attackers to cause a denial of service (application crash), as demonstrated by use of the fnmatch library function with the **(!() pattern. NOTE: this is not the same as CVE-2015-8984; also, some Linux distributions have fixed CVE-2015-8984 but have not fixed this additional fnmatch issue.
- Record
CVE-2015-20109- Updated
- 2026-11-02
EUVDEUVD-2015-2112 No score
end_pattern (called from internal_fnmatch) in the GNU C Library (aka glibc or libc6) before 2.22 might allow context-dependent attackers to cause a denial of service (application crash), as demonstrated by use of the fnmatch library function with the **(!() pattern. NOTE: this is not the same as CVE-2015-8984; also, some Linux distributions have fixed CVE-2015-8984 but have not fixed this additional fnmatch issue.
- Record
EUVD-2015-2112- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-rf48-x9gm-3vx2
5.5
end_pattern (called from internal_fnmatch) in the GNU C Library (aka glibc or libc6) before 2.22...
end_pattern (called from internal_fnmatch) in the GNU C Library (aka glibc or libc6) before 2.22 might allow context-dependent attackers to cause a denial of service (application crash), as demonstrated by use of the fnmatch library function with the **(!() pattern. NOTE: this is not the same as CVE-2015-8984; also, some Linux distributions have fixed CVE-2015-8984 but have not fixed this additional fnmatch issue.
- Record
GHSA-rf48-x9gm-3vx2- CVSS 3.1
- 5.5 Medium
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H - Weakness
- CWE-120
- Updated
- 2026-11-02
OSV
5.5
end_pattern (called from internal_fnmatch) in the GNU C Library (aka glibc or libc6) before 2.22 might allow context-dependent attackers to cause a denial of service (application crash), as demonstrated by use of the fnmatch library function with the **(!() pattern. NOTE: this is not the same as CVE-2015-8984; also, some Linux distributions have fixed CVE-2015-8984 but have not fixed this additional fnmatch issue.
- Record
CVE-2015-20109- CVSS 3.1
- 5.5 Medium
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
OSVDEBIAN-CVE-2015-20109
5.5
end_pattern (called from internal_fnmatch) in the GNU C Library (aka glibc or libc6) before 2.22 might allow context-dependent attackers to cause a denial of service (application crash), as demonstrated by use of the fnmatch library function with the **(!() pattern. NOTE: this is not the same as CVE-2015-8984; also, some Linux distributions have fixed CVE-2015-8984 but have not fixed this additional fnmatch issue.
- Record
DEBIAN-CVE-2015-20109- CVSS 3.1
- 5.5 Medium
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
OSVUBUNTU-CVE-2015-20109
5.5
end_pattern (called from internal_fnmatch) in the GNU C Library (aka glibc or libc6) before 2.22 might allow context-dependent attackers to cause a denial of service (application crash), as demonstrated by use of the fnmatch library function with the **(!() pattern. NOTE: this is not the same as CVE-2015-8984; also, some Linux distributions have fixed CVE-2015-8984 but have not fixed this additional fnmatch issue.
- Record
UBUNTU-CVE-2015-20109- CVSS 3.1
- 5.5 Medium
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
OSVUSN-6762-1 No score
eglibc, glibc vulnerabilities
It was discovered that GNU C Library incorrectly handled netgroup requests. An attacker could possibly use this issue to cause a crash or execute arbitrary code. This issue only affected Ubuntu 14.04 LTS. (CVE-2014-9984)
It was discovered that GNU C Library might allow context-dependent attackers to cause a denial of service. This issue only affected Ubuntu 14.04 LTS. (CVE-2015-20109)
It was discovered that GNU C Library when processing very long pathname arguments to the realpath function, could encounter an integer overflow on 32-bit architectures, leading to a stack-based buffer overflow and, potentially, arbitrary code execution. This issue only affected Ubuntu 14.04 LTS. (CVE-2018-11236)
It was discovered that the GNU C library getcwd function incorrectly handled buffers. An attacker could use this issue to cause the GNU C Library to crash, resulting in a denial of service, or possibly execute arbitrary code. This issue only affected Ubuntu 14.04 LTS. (CVE-2021-3999)
Charles Fol discovered that the GNU C Library iconv feature incorrectly handled certain input sequences. An attacker could use this issue to cause the GNU C Library to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2024-2961)
- Record
USN-6762-1- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
glibcDebian:12 |
before 2.22-1 | 2.22-1 |
glibcDebian:13 |
before 2.22-1 | 2.22-1 |
glibcDebian:14 |
before 2.22-1 | 2.22-1 |
eglibcUbuntu:Pro:14.04:LTS |
before 2.19-0ubuntu6.15+esm3, plus listed versions 2.17-93ubuntu42.18-0ubuntu12.18-0ubuntu22.18-0ubuntu42.18-0ubuntu5 Show 22 moreShow less2.18-0ubuntu62.18-0ubuntu72.19-0ubuntu22.19-0ubuntu32.19-0ubuntu42.19-0ubuntu52.19-0ubuntu62.19-0ubuntu6.12.19-0ubuntu6.32.19-0ubuntu6.42.19-0ubuntu6.52.19-0ubuntu6.62.19-0ubuntu6.72.19-0ubuntu6.82.19-0ubuntu6.92.19-0ubuntu6.102.19-0ubuntu6.112.19-0ubuntu6.132.19-0ubuntu6.142.19-0ubuntu6.152.19-0ubuntu6.15+esm12.19-0ubuntu6.15+esm2 |
2.19-0ubuntu6.15+esm3 |
glibcUbuntu:Pro:16.04:LTS |
before 2.23-0ubuntu11.3+esm6, plus listed versions 2.21-0ubuntu42.21-0ubuntu52.21-0ubuntu62.23-0ubuntu12.23-0ubuntu2 Show 14 moreShow less2.23-0ubuntu32.23-0ubuntu42.23-0ubuntu52.23-0ubuntu62.23-0ubuntu72.23-0ubuntu92.23-0ubuntu102.23-0ubuntu112.23-0ubuntu11.22.23-0ubuntu11.32.23-0ubuntu11.3+esm12.23-0ubuntu11.3+esm22.23-0ubuntu11.3+esm32.23-0ubuntu11.3+esm5 |
2.23-0ubuntu11.3+esm6 |
glibcUbuntu:Pro:18.04:LTS |
before 2.27-3ubuntu1.6+esm2, plus listed versions 2.26-0ubuntu22.26-0ubuntu2.12.27-0ubuntu22.27-0ubuntu32.27-3ubuntu1 Show 6 moreShow less2.27-3ubuntu1.22.27-3ubuntu1.32.27-3ubuntu1.42.27-3ubuntu1.52.27-3ubuntu1.62.27-3ubuntu1.6+esm1 |
2.27-3ubuntu1.6+esm2 |
History
| When | Changed | Sources |
|---|---|---|
| 2026-11-03 | aliases | EUVD |
| 2026-11-02 | created | CVE List, GitHub Advisories, NVD, OSV |
References
sourceware.org/bugzilla/show_bug.cgi?id=18036
security.netapp.com/advisory/ntap-20230731-0009
nvd.nist.gov/vuln/detail/CVE-2015-20109
github.com/advisories/GHSA-rf48-x9gm-3vx2
security-tracker.debian.org/tracker/CVE-2015-20109
ubuntu.com/security/CVE-2015-20109
Show 8 moreShow less
sourceware.org/git/gitweb.cgi?p=glibc.git;h=c2c6d39fab901c97c18fa3a3a3658d9dc3f7df61
cve.org/CVERecord?id=CVE-2015-20109
ubuntu.com/security/notices/USN-6762-1
ubuntu.com/security/CVE-2014-9984
ubuntu.com/security/CVE-2018-11236
ubuntu.com/security/CVE-2021-3999
ubuntu.com/security/CVE-2024-2961
launchpad.net/bugs/2063328