CVE-2012-2114: Stack-based buffer overflow in fprintf in musl before 0.8.8 and earlier allows context-dependent attackers to

Q: How do I fix CVE-2012-2114?

musl: upgrade to newer than 0.8.8. Exact commands for each OS are on this page.

Q: Is CVE-2012-2114 being exploited?

CVE-2012-2114 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2012-2114 affect?

CVE-2012-2114 affects musl. Severity is high (CVSS 7.5). Stack-based buffer overflow in fprintf in musl before 0.8.8 and earlier allows context-dependent attackers to cause a denial of service (crash) or possibly execute arbitrary code via a long string to an unbuffered stream such as stderr.

This month

HIGH 7.5UPGRADE

CVE-2012-2114 is a high-severity flaw (CVSS 7.5) affecting musl. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Stack-based buffer overflow in fprintf in musl before 0.8.8 and earlier allows context-dependent attackers to cause a denial of service (crash) or possibly execute arbitrary code via a long string to an unbuffered stream such as stderr.

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
EPSS exploit chance	2.4% (top 16%)
CISA exploited list	No
Weakness	CWE-119
Published	2012-08-31
Last modified	2026-06-16

Publisher (CNA): Red Hat, Inc. · Vendor: etalabs

Last updated 2026-06-16 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2012-08-31 22:55 UTCPublished CVE record published
2026-06-16 23:41 UTCUpdated Record last modified

etalabs musl UPGRADE

Affected: <= 0.8.8

Fixed in: newer than 0.8.8

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy musl || rpm -q musl || musl --version

2. UPGRADE to newer than 0.8.8 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade musl

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade musl

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2012-2114?

musl: upgrade to newer than 0.8.8. Exact commands for each OS are on this page.

Is CVE-2012-2114 being exploited?

CVE-2012-2114 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2012-2114 affect?

CVE-2012-2114 affects musl. Severity is high (CVSS 7.5). Stack-based buffer overflow in fprintf in musl before 0.8.8 and earlier allows context-dependent attackers to cause a denial of service (crash) or possibly execute arbitrary code via a long string to an unbuffered stream such as stderr.

How urgent is CVE-2012-2114?

Priority 47/100. High severity

Related CVEs

CVE-2025-26519 HIGH 8.1 UPGRADE musl libc 0.9.13 through 1.2.5 before 1.2.6 has an out-of-bounds write vulnerability when an attacker can trig
CVE-2020-28928 MEDIUM 5.5 UPGRADE MITIGATE In musl libc through 1.2.1, wcsnrtombs mishandles particular combinations of destination buffer size and sourc
CVE-2019-14697 CRITICAL 9.8 UPGRADE musl libc through 1.1.23 has an x87 floating-point stack adjustment imbalance, related to the math/i386/ direc
CVE-2017-15650 HIGH 7.5 UPGRADE musl libc before 1.1.17 has a buffer overflow via crafted DNS replies because dns_parse_callback in network/lo
CVE-2016-8859 CRITICAL 9.8 UPGRADE Multiple integer overflows in the TRE library and musl libc allow attackers to cause memory corruption via a l

References

← Back to latest CVEs