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CVE-2016-6323

20
FAUCET Score

CVE-2016-6323 describes a flaw in the GNU C Library's makecontext function (glibc before 2.25) on ARM EABI (32-bit) platforms, leading to execution contexts incompatible with the unwinder. This can cause a denial of service (application hang) in affected products like Fedora and openSUSE, particularly when using applications compiled with gccgo. The vulnerability has a CVSS v3 score of 7.5 (HIGH), indicating a network-based attack with low complexity that can lead 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
<= 2.24CPE matchmatch criteria
cpe:2.3:a:gnu:glibc:*:*:*:*:*:*:*:*
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
3.84%
Probability of exploitation in next 30 days
EPSS Percentile
89.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0384 is in the 81st percentile among its peer group of 51,485 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

Vendor Advisories (1)

redhatCVE-2016-6323Low

glibc: Missing unwind info in __startcontext causes infinite loop in _Unwind_Backtrace

Aug 4, 2016

References

lists.opensuse.org / opensuse-updates/2016-10/msg00009.html
Third Party Advisory
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/KTXSOVCRDGBIB4WCIDAGYYUBESXZ4IGK
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/LVWSAZVBTLALXF4SCBPDV3FY6J22DXLZ
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/WO7IMEYWZ2WTXGGMZBWWSDCUMFN63XOB
security.gentoo.org / glsa/201706-19
sourceware.org / bugzilla/show_bug.cgi
Issue Tracking
sourceware.org / git/gitweb.cgi
www-01.ibm.com / support/docview.wss
openwall.com / lists/oss-security/2016/08/18/12
Mailing ListThird Party Advisory
securityfocus.com / bid/92532