CVE-2015-9101: The fill_buffer_resample function in util.c in libmp3lame.a in LAME 3.98.4, 3.98.2, 3.98, 3.99, 3.99.1, 3.99.2

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MEDIUM 5.5DOWNGRADE

CVE-2015-9101 is a medium-severity flaw (CVSS 5.5) affecting lame. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The fill_buffer_resample function in util.c in libmp3lame.a in LAME 3.98.4, 3.98.2, 3.98, 3.99, 3.99.1, 3.99.2, 3.99.3, 3.99.4 and 3.99.5 allows remote attackers to cause a denial of service (heap-based buffer over-read and application crash) via a crafted audio file.

Why this priority

Public exploit reference

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	5.5 (Medium)
Attack vector	Local
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	1.8% (top 21%)
CISA exploited list	No
Weakness	CWE-119
Published	2017-06-25
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: lame project

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2017-06-25 19:29 UTCPublished CVE record published
2026-06-17 00:35 UTCUpdated Record last modified

lame project lame DOWNGRADE

Affected: 3.98 · 3.98.2 · 3.98.4 · 3.99 · 3.99.1 · 3.99.2 · 3.99.3 · 3.99.4

Fixed in: no fixed release known

Safe to downgrade to: a release before 3.98

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 3.98 (Debian / Ubuntu)

apt-cache madison lame sudo apt install lame=<VERSION_BEFORE_3.98> sudo apt-mark hold lame

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list lame sudo dnf downgrade lame-<VERSION_BEFORE_3.98> sudo dnf versionlock add lame

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

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-2015-9101?

lame: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2015-9101 being exploited?

CVE-2015-9101 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-2015-9101 affect?

CVE-2015-9101 affects lame. Severity is medium (CVSS 5.5). The fill_buffer_resample function in util.c in libmp3lame.a in LAME 3.98.4, 3.98.2, 3.98, 3.99, 3.99.1, 3.99.2, 3.99.3, 3.99.4 and 3.99.5 allows remote attackers to cause a denial of service (heap-based buffer over-read and application cras

How urgent is CVE-2015-9101?

Priority 44/100. Public exploit reference

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References

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