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Vulnerabilities / CVE-2016-7949

critical

CVE-2016-7949

libXrender: Insufficient validation of server responses results in overflow of previously reserved memory

Published Modified CWE 20, 787
In the Trivy database since at least 24 Oct 2026, 07:11 UTCWhen it arrived before that build is not recorded.

Severity by source

NVD9.8CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Red Hat5.0CVSS:3.0/AV:A/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L

Trivy's own label is CRITICAL. Rated critical by NVD. Rated lower by Red Hat (medium), Ubuntu (low).

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 packages and fixed versions

SourcePackageFixed in
debian 11libxrender1:0.9.10-1
debian 12libxrender1:0.9.10-1
debian 13libxrender1:0.9.10-1
debian 14libxrender1:0.9.10-1
debian 7libxrender1:0.9.7-1+deb7u3
debian 8libxrenderno fix listed
echolibxrender1:0.9.10-1
Red HatlibXrender, libXrender-develno fix listed
ubuntu 16.04-ESMlibxrender1:0.9.9-0ubuntu1+esm1
Show all 10 entries from 9 sources
SourcePackageFixed in
debian 11libxrender1:0.9.10-1
debian 12libxrender1:0.9.10-1
debian 13libxrender1:0.9.10-1
debian 14libxrender1:0.9.10-1
debian 7libxrender1:0.9.7-1+deb7u3
debian 8libxrenderno fix listed
echolibxrender1:0.9.10-1
Red HatlibXrenderno fix listed
Red HatlibXrender-develno fix listed
ubuntu 16.04-ESMlibxrender1:0.9.9-0ubuntu1+esm1

References

All 13 references

Vulnerability data compiled from the Trivy vulnerability database (trivy-db, Aqua Security, Apache License 2.0), which aggregates third-party advisories. CVE records are published by The MITRE Corporation under the CVE Terms of Use; CVE is a trademark of MITRE. This product uses data from the NVD API but is not endorsed or certified by the NVD. Severity, titles and advisory data from the GitHub Advisory Database (CC BY 4.0), Red Hat security data (CC BY 4.0) and the other sources linked on each entry. Entries may be summarised or re-formatted; the linked original is the authoritative record.