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CVE-2016-7972

21
FAUCET Score

CVE-2016-7972 is a denial-of-service vulnerability in the libass library, specifically within the check_allocations function in libass/ass_shaper.c, affecting versions prior to 0.13.4. This flaw allows remote attackers to trigger memory allocation failures through unspecified vectors, impacting products like Fedora and openSUSE. Rated with a CVSSv3 score of 7.5 (HIGH), it presents a low-complexity attack that requires no user interaction and can be exploited over the network, leading to high availability impact. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
42.1CPE matchmatch criteria
cpe:2.3:o:opensuse:leap:42.1:*:*:*:*:*:*:*
13.2CPE matchmatch criteria
cpe:2.3:o:opensuse:opensuse:13.2:*:*:*:*:*:*:*
23CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:23:*:*:*:*:*:*:*
24CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:24:*:*:*:*:*:*:*
25CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:25:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.5HIGH

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
5.19%
Probability of exploitation in next 30 days
EPSS Percentile
91.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0519 is in the 85th percentile among its peer group of 51,466 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (3)

gentoopatch availablevia nvd_reference
View patch
github_advisorypatch availablevia nvd_reference
View patch
redhatpatch availablevia nvd_reference
View patch

References

lists.opensuse.org / opensuse-updates/2016-12/msg00068.html
Third Party Advisory
bugzilla.redhat.com / show_bug.cgi
Issue TrackingPatch
github.com / libass/libass/pull/240/commits/aa54e0b59200a994d50a346b5d7ac818ebcf2d4b
Issue TrackingPatchThird Party Advisory
github.com / libass/libass/releases/tag/0.13.4
PatchRelease NotesThird Party Advisory
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/KW6DNERYHPI5Y6SQYU3XKTVSCOWMIHUC
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/R7JJ2SGVOX6UQQIRMVC3QACJLKHE2PYN
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/VUOUOK3VULMMZTNSCRFCNPDAPDWAVK7X
security.gentoo.org / glsa/201702-25
PatchThird Party AdvisoryVDB Entry
openwall.com / lists/oss-security/2016/10/05/2
Mailing ListPatchThird Party Advisory
securityfocus.com / bid/93358
Third Party AdvisoryVDB Entry