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Fencer Intel
high 7.5

CVE-2016-7972 json

The check_allocations function in libass/ass_shaper.c in libass before 0.13.4 allows remote attackers to cause a denial of service (memory…

published 2017-03-03 9 y ago modified 2026-06-17 4 mo ago also EUVD-2016-8820

cvss
7.5
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
5.2%
EPSS 5.2% chance of exploitation in 30 days, percentile 92%
public exploits
0
none known

Summary

The check_allocations function in libass/ass_shaper.c in libass before 0.13.4 allows remote attackers to cause a denial of service (memory allocation failure) via unspecified vectors.

Patch / fix

  • libass Debian 14, Debian 13, Debian 12 0.13.4-1

debian advisories DEBIAN-CVE-2016-7972

  • libass Ubuntu Pro 14.04 LTS 0.10.1-3ubuntu1+esm1
  • libass Ubuntu Pro 16.04 LTS 0.13.1-1ubuntu0.1~esm1

ubuntu advisories UBUNTU-CVE-2016-7972

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • libass SLES for SAP 12 SP2, SLES for SAP 12 SP1, SLES for Raspberry Pi 12 SP2 +6 more 0.10.2-3.1

suse advisories SUSE-SU-2016:3107-1

  • libass Alpine 3.24, Alpine 3.23, Alpine 3.22 +19 more 0.13.4-r0

alpine advisories ALPINE-CVE-2016-7972

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2016-7972 updated

libass: Multiple issues disclosed with 0.13.4 update

  • Red Hat All currently supported Red Hat products
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

5.23% chance of exploitation in the next 30 days, higher than 92% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 3.0 7.5 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:N/I:N/A:P

Classification

Weakness
  • CWE-399 Resource Management Errors

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.