libXrender: Insufficient validation of server responses results in overflow of previously reserved memory
Published Dec 13, 2016
9.8
CRITICALCVSS 3.0
EPSS 3.72%
Description
Multiple buffer overflows in the (1) XvQueryAdaptors and (2) XvQueryEncodings functions in X.org libXrender before 0.9.10 allow remote X servers to trigger out-of-bounds write operations via vectors involving length fields.
Affected products
No data.
Configuration 1
- ≤ 0.9.9
Configuration 2
- 24
- 25
No data.
Red Hat Enterprise Linux 5
libXrender
Will not fix
Red Hat Enterprise Linux 6
libXrender
Will not fix
Red Hat Enterprise Linux 7
libXrender
Will not fix
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | libXrender | Will not fix | n/a |
| Red Hat Enterprise Linux 6 | libXrender | Will not fix | n/a |
| Red Hat Enterprise Linux 7 | libXrender | 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: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
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (16 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 3.72% (0.03721) | 89.44th | v5 (v2026.06.15) |
| Jun 15, 2026 | 3.65% (0.03650) | 88.11th | v5 (v2026.06.15) |
| Jul 13, 2025 | 4.76% (0.04763) | 88.97th | v4 (v2025.03.14) |
| May 28, 2025 | 6.71% (0.06710) | 90.75th | v4 (v2025.03.14) |
| Mar 30, 2025 | 4.34% (0.04343) | 87.86th | v4 (v2025.03.14) |
| Mar 29, 2025 | 18.93% (0.18931) | 92.29th | v4 (v2025.03.14) |
| Mar 17, 2025 | 4.34% (0.04343) | 88.17th | v4 (v2025.03.14) |
| Dec 12, 2024 | 1.32% (0.01319) | 86.54th | v3 (v2023.03.01) |
| May 25, 2024 | 1.32% (0.01319) | 85.94th | v3 (v2023.03.01) |
| Nov 8, 2023 | 0.93% (0.00933) | 81.21th | v3 (v2023.03.01) |
| Mar 19, 2023 | 0.90% (0.00898) | 80.26th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.89% (0.00885) | 80.06th | 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/93366 vdb-entryx_refsource_BID
- http://www.securitytracker.com/id/1036945 vdb-entryx_refsource_SECTRACK
- https://access.redhat.com/security/cve/CVE-2016-7949 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1381927 Issue Tracking
- https://cgit.freedesktop.org/xorg/lib/libXrender/commit/?id=9362c7ddd1af3b168953d0737877bc52d79c94f4 x_refsource_CONFIRM
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7WCKZFMZ76APAVMIRCUKKHEB4GAS7ZUP/ vendor-advisoryx_refsource_FEDORA
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZHUT5YOSWVMBJNWZGUQNZRBFIZKRM4A6/ 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-2016-7949
- https://security.gentoo.org/glsa/201704-03 vendor-advisoryx_refsource_GENTOO
- https://www.cve.org/CVERecord?id=CVE-2016-7949
Change history (0)
No recorded changes yet.