glibc: Integer overflow in hcreate and hcreate_r
Published Apr 19, 2016
9.8
CRITICALCVSS 3.0
EPSS 5.74%
Description
Integer overflow in the GNU C Library (aka glibc or libc6) before 2.23 allows context-dependent attackers to cause a denial of service (application crash) or possibly execute arbitrary code via the size argument to the __hcreate_r function, which triggers out-of-bounds heap-memory access.
Affected products
No data.
Configuration 1
- 23
Configuration 2
- 8.0
Configuration 3
- 12.04
- 14.04
- 15.10
Configuration 5
- 11
- 11
- 11
- 13.2
- 11
- 11
- 12
- 12
- 11
- 11
- 11
- 11
- 12
- 11
- 11
- 12
- 12
- 12
No data.
Red Hat Enterprise Linux 6
glibc-0:2.12-1.209.el6
Fixed · RHSA-2017:0680
Red Hat Enterprise Linux 7
glibc-0:2.17-196.el7
Fixed · RHSA-2017:1916
Red Hat Enterprise Linux 5
compat-glibc
Will not fix
Red Hat Enterprise Linux 5
glibc
Will not fix
Red Hat Enterprise Linux 6
compat-glibc
Will not fix
Red Hat Enterprise Linux 7
compat-glibc
Will not fix
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 6 | glibc-0:2.12-1.209.el6 | Fixed | RHSA-2017:0680 |
| Red Hat Enterprise Linux 7 | glibc-0:2.17-196.el7 | Fixed | RHSA-2017:1916 |
| Red Hat Enterprise Linux 5 | compat-glibc | Will not fix | n/a |
| Red Hat Enterprise Linux 5 | glibc | Will not fix | n/a |
| Red Hat Enterprise Linux 6 | compat-glibc | Will not fix | n/a |
| Red Hat Enterprise Linux 7 | compat-glibc | Will not fix | n/a |
No package ranges for this CVE.
Remediation
Red Hat mitigation
Do not use any applications which call hcreate or hcreate_r with a large size argument. These functions are used only rarely, and most callers supply a constant argument. Other applications calculate the size argument in such a way that the error condition cannot be triggered.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
1 other source (Red Hat) ▾
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
AV:N/AC:L/Au:N/C:P/I:P/A:P
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (25 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 5.74% (0.05738) | 92.82th | v5 (v2026.06.15) |
| Jun 15, 2026 | 5.51% (0.05515) | 91.76th | v5 (v2026.06.15) |
| May 13, 2026 | 4.47% (0.04466) | 89.18th | v4 (v2025.03.14) |
| Apr 18, 2026 | 6.10% (0.06102) | 90.80th | v4 (v2025.03.14) |
| Jan 11, 2026 | 9.81% (0.09807) | 92.72th | v4 (v2025.03.14) |
| Dec 28, 2025 | 7.73% (0.07731) | 91.63th | v4 (v2025.03.14) |
| Dec 27, 2025 | 6.60% (0.06604) | 90.90th | v4 (v2025.03.14) |
| Oct 28, 2025 | 7.73% (0.07731) | 91.53th | v4 (v2025.03.14) |
| Oct 27, 2025 | 6.60% (0.06604) | 90.78th | v4 (v2025.03.14) |
| Oct 1, 2025 | 7.73% (0.07731) | 91.63th | v4 (v2025.03.14) |
| Jul 27, 2025 | 6.60% (0.06604) | 90.75th | v4 (v2025.03.14) |
| Jul 26, 2025 | 5.20% (0.05195) | 89.48th | v4 (v2025.03.14) |
| May 21, 2025 | 8.41% (0.08413) | 91.85th | v4 (v2025.03.14) |
| Mar 30, 2025 | 7.02% (0.07024) | 90.60th | v4 (v2025.03.14) |
| Mar 29, 2025 | 19.34% (0.19340) | 92.43th | v4 (v2025.03.14) |
| Mar 17, 2025 | 7.02% (0.07024) | 90.80th | v4 (v2025.03.14) |
| Dec 25, 2024 | 2.31% (0.02311) | 89.39th | v3 (v2023.03.01) |
| May 19, 2024 | 3.47% (0.03468) | 91.51th | v3 (v2023.03.01) |
| Dec 6, 2023 | 3.04% (0.03037) | 89.88th | v3 (v2023.03.01) |
| Jul 21, 2023 | 1.54% (0.01537) | 85.36th | v3 (v2023.03.01) |
| May 2, 2023 | 1.34% (0.01338) | 84.05th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.96% (0.00957) | 80.87th | v3 (v2023.03.01) |
| Mar 6, 2023 | 3.74% (0.03740) | 85.11th | v2 (v2022.01.01) |
| Apr 1, 2022 | 3.74% (0.03740) | 83.58th | v2 (v2022.01.01) |
| Feb 4, 2022 | 3.74% (0.03740) | 66.74th | v2 (v2022.01.01) |
References (26)
- http://lists.fedoraproject.org/pipermail/package-announce/2016-May/184626.html vendor-advisoryx_refsource_FEDORAThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00036.html vendor-advisoryx_refsource_SUSEThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00037.html vendor-advisoryx_refsource_SUSEThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00038.html vendor-advisoryx_refsource_SUSEThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00039.html vendor-advisoryx_refsource_SUSEThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00042.html vendor-advisoryx_refsource_SUSEThird Party Advisory
- http://packetstormsecurity.com/files/154361/Cisco-Device-Hardcoded-Credentials-GNU-glibc-BusyBox.html x_refsource_MISC
- http://rhn.redhat.com/errata/RHSA-2017-0680.html vendor-advisoryx_refsource_REDHAT
- http://seclists.org/fulldisclosure/2019/Sep/7 mailing-listx_refsource_FULLDISC
- http://www.debian.org/security/2016/dsa-3480 vendor-advisoryx_refsource_DEBIAN
- http://www.debian.org/security/2016/dsa-3481 vendor-advisoryx_refsource_DEBIAN
- http://www.openwall.com/lists/oss-security/2016/01/19/11 mailing-listx_refsource_MLISTThird Party Advisory
- http://www.openwall.com/lists/oss-security/2016/01/20/1 mailing-listx_refsource_MLISTThird Party Advisory
- http://www.securityfocus.com/bid/83275 vdb-entryx_refsource_BID
- http://www.ubuntu.com/usn/USN-2985-1 vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- http://www.ubuntu.com/usn/USN-2985-2 vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- https://access.redhat.com/errata/RHSA-2017:1916 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/security/cve/CVE-2015-8778 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1300303 Issue Tracking
- https://nvd.nist.gov/vuln/detail/CVE-2015-8778
- https://seclists.org/bugtraq/2019/Sep/7 mailing-listx_refsource_BUGTRAQ
- https://security.gentoo.org/glsa/201602-02 vendor-advisoryx_refsource_GENTOOThird Party Advisory
- https://security.gentoo.org/glsa/201702-11 vendor-advisoryx_refsource_GENTOO
- https://sourceware.org/bugzilla/show_bug.cgi?id=18240 x_refsource_CONFIRMIssue Tracking
- https://www.cve.org/CVERecord?id=CVE-2015-8778
- https://www.sourceware.org/ml/libc-alpha/2016-02/msg00502.html mailing-listx_refsource_MLISTVendor Advisory
Change history (0)
No recorded changes yet.