glibc: Integer overflow in posix_memalign in memalign functions
Published Feb 1, 2018
9.8
CRITICALCVSS 3.0
EPSS 4.69%
Description
An integer overflow in the implementation of the posix_memalign in memalign functions in the GNU C Library (aka glibc or libc6) 2.26 and earlier could cause these functions to return a pointer to a heap area that is too small, potentially leading to heap corruption.
Affected products
No data.
Configuration 2
- 4.0
- 7.0
- 7.0
- 7.0
Configuration 3
- 8.0.0
- 8.1.0
- 8.2.0
- 3.0.0
- 3.1.0
Configuration 4
- n/a
- n/a
- n/a
- n/a
- n/a
- ≥ 7.2
- ≥ 7.2
- 6.x
- ≥ 7.2
- n/a
No data.
Red Hat Enterprise Linux 7
glibc-0:2.17-260.el7
Fixed · RHSA-2018:3092
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 6
glibc
Will not fix
Red Hat Enterprise Linux 7
compat-glibc
Will not fix
Red Hat Enterprise Linux 8
glibc
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 7 | glibc-0:2.17-260.el7 | Fixed | RHSA-2018:3092 |
| 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 6 | glibc | Will not fix | n/a |
| Red Hat Enterprise Linux 7 | compat-glibc | Will not fix | n/a |
| Red Hat Enterprise Linux 8 | glibc | Not affected | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
This issue affects the versions of glibc and compat-glibc as shipped with Red Hat Enterprise Linux 5, Red Hat Enterprise Linux 6 and Red Hat Enterprise Linux 7. Red Hat Product Security has rated this issue as having Moderate security impact. A future update may address this issue. For additional information, refer to the Issue Severity Classification: https://access.redhat.com/security/updates/classification/.
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:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
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
2021–2026- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (20 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 4.69% (0.04689) | 91.50th | v5 (v2026.06.15) |
| Jun 15, 2026 | 4.78% (0.04778) | 90.74th | v5 (v2026.06.15) |
| Mar 30, 2025 | 0.73% (0.00727) | 70.31th | v4 (v2025.03.14) |
| Mar 29, 2025 | 3.23% (0.03226) | 78.27th | v4 (v2025.03.14) |
| Mar 17, 2025 | 0.63% (0.00631) | 68.55th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.55% (0.00548) | 78.23th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.55% (0.00548) | 76.77th | v3 (v2023.03.01) |
| Sep 21, 2023 | 0.55% (0.00548) | 74.68th | v3 (v2023.03.01) |
| Aug 4, 2023 | 0.55% (0.00554) | 74.56th | v3 (v2023.03.01) |
| Jun 25, 2023 | 0.52% (0.00515) | 73.43th | v3 (v2023.03.01) |
| May 8, 2023 | 0.76% (0.00760) | 78.44th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.64% (0.00642) | 76.05th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.54% (0.01537) | 74.52th | v2 (v2022.01.01) |
| Feb 23, 2023 | 1.54% (0.01537) | 74.48th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.54% (0.01537) | 72.41th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.54% (0.01537) | 51.33th | v2 (v2022.01.01) |
| Feb 3, 2022 | 2.07% (0.02069) | 50.36th | v1 |
| Jan 6, 2022 | 2.07% (0.02069) | 49.86th | v1 |
| Sep 1, 2021 | 2.07% (0.02069) | 77.27th | v1 |
| Apr 14, 2021 | 2.07% (0.02069) | 0.00th | v1 |
References (13)
- http://bugs.debian.org/878159 x_refsource_CONFIRMIssue TrackingMailing ListThird Party Advisory
- http://www.securityfocus.com/bid/102912 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- https://access.redhat.com/errata/RHBA-2019:0327 vendor-advisoryx_refsource_REDHATThird Party Advisory
- https://access.redhat.com/errata/RHSA-2018:3092 vendor-advisoryx_refsource_REDHATPatchThird Party Advisory
- https://access.redhat.com/security/cve/CVE-2018-6485 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1542102 Issue Tracking
- https://nvd.nist.gov/vuln/detail/CVE-2018-6485
- https://security.netapp.com/advisory/ntap-20190404-0003/ x_refsource_CONFIRMThird Party Advisory
- https://sourceware.org/bugzilla/show_bug.cgi?id=22343 x_refsource_CONFIRMIssue TrackingThird Party Advisory
- https://usn.ubuntu.com/4218-1/ vendor-advisoryx_refsource_UBUNTU
- https://usn.ubuntu.com/4416-1/ vendor-advisoryx_refsource_UBUNTU
- https://www.cve.org/CVERecord?id=CVE-2018-6485
- https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html x_refsource_MISCPatchThird Party Advisory
Change history (0)
No recorded changes yet.