libXfixes: Insufficient validation of server responses results in Integer overflow
Published Dec 13, 2016
9.8
CRITICALCVSS 3.0
EPSS 3.40%
Description
Integer overflow in X.org libXfixes before 5.0.3 on 32-bit platforms might allow remote X servers to gain privileges via a length value of INT_MAX, which triggers the client to stop reading data and get out of sync.
Affected products
No data.
Configuration 2
- 24
- 25
No data.
Red Hat Enterprise Linux 5
libXfixes
Will not fix
Red Hat Enterprise Linux 6
libXfixes
Will not fix
Red Hat Enterprise Linux 7
libXfixes
Will not fix
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | libXfixes | Will not fix | n/a |
| Red Hat Enterprise Linux 6 | libXfixes | Will not fix | n/a |
| Red Hat Enterprise Linux 7 | libXfixes | Will not fix | n/a |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
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:A/AC:H/PR:N/UI:N/S:U/C:N/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
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (14 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 3.40% (0.03395) | 88.42th | v5 (v2026.06.15) |
| Jun 15, 2026 | 3.42% (0.03423) | 87.32th | v5 (v2026.06.15) |
| Mar 30, 2025 | 0.78% (0.00781) | 71.46th | v4 (v2025.03.14) |
| Mar 29, 2025 | 3.31% (0.03311) | 78.55th | v4 (v2025.03.14) |
| Mar 17, 2025 | 0.78% (0.00781) | 72.03th | v4 (v2025.03.14) |
| Dec 12, 2024 | 1.28% (0.01281) | 86.32th | v3 (v2023.03.01) |
| May 25, 2024 | 1.28% (0.01281) | 85.72th | v3 (v2023.03.01) |
| Nov 8, 2023 | 0.91% (0.00907) | 80.91th | v3 (v2023.03.01) |
| Mar 19, 2023 | 0.97% (0.00965) | 80.99th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.95% (0.00952) | 80.81th | 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) |
References (13)
- http://www.openwall.com/lists/oss-security/2016/10/04/2 mailing-listx_refsource_MLIST
- http://www.openwall.com/lists/oss-security/2016/10/04/4 mailing-listx_refsource_MLIST
- http://www.securityfocus.com/bid/93361 vdb-entryx_refsource_BID
- http://www.securitytracker.com/id/1036945 vdb-entryx_refsource_SECTRACK
- https://access.redhat.com/security/cve/CVE-2016-7944 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1381865 Issue Tracking
- https://cgit.freedesktop.org/xorg/lib/libXfixes/commit/?id=61c1039ee23a2d1de712843bed3480654d7ef42e x_refsource_CONFIRM
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4CE6VJWBMOWLSCH4OP4TAEPIA7NP53ON/ vendor-advisoryx_refsource_FEDORA
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GE43MDCRGS4R7MRRZNVSLREHRLU5OHCV/ vendor-advisoryx_refsource_FEDORA
- https://lists.x.org/archives/xorg-announce/2016-October/002720.html mailing-listx_refsource_MLIST
- https://nvd.nist.gov/vuln/detail/CVE-2016-7944
- https://security.gentoo.org/glsa/201704-03 vendor-advisoryx_refsource_GENTOO
- https://www.cve.org/CVERecord?id=CVE-2016-7944
Change history (0)
No recorded changes yet.