CVE-2018-18197: An issue was discovered in libgig 4.1.0

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CRITICAL 9.8REMOTEWATCHLISTDOWNGRADE

CVE-2018-18197 is a critical-severity flaw (CVSS 9.8) affecting libgig. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

An issue was discovered in libgig 4.1.0. There is an operator new[] failure (due to a big pSampleLoops heap request) in DLS::Sampler::Sampler in DLS.cpp.

Why this priority

Critical severity
Public exploit reference
Remotely exploitable, no login, no user action
On your watchlist

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

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.4% (top 28%)
CISA exploited list	No
Weakness	CWE-119
Published	2018-10-09
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: linuxsampler

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

Am I affected?

Timeline

2018-10-09 20:29 UTCPublished CVE record published
2026-06-17 01:46 UTCUpdated Record last modified

linuxsampler libgig DOWNGRADE

Affected: 4.1.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 4.1.0

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 4.1.0 (Debian / Ubuntu)

apt-cache madison libgig sudo apt install libgig=<VERSION_BEFORE_4.1.0> sudo apt-mark hold libgig

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

dnf --showduplicates list libgig sudo dnf downgrade libgig-<VERSION_BEFORE_4.1.0> sudo dnf versionlock add libgig

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-2018-18197?

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

Is CVE-2018-18197 being exploited?

CVE-2018-18197 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-2018-18197 affect?

CVE-2018-18197 affects libgig. Severity is critical (CVSS 9.8). An issue was discovered in libgig 4.1.0. There is an operator new[] failure (due to a big pSampleLoops heap request) in DLS::Sampler::Sampler in DLS.cpp.

How urgent is CVE-2018-18197?

Priority 67/100. Critical severity; Public exploit reference; Remotely exploitable, no login, no user action; On your watchlist

Related CVEs

CVE-2021-32294 HIGH 8.8 UPGRADE An issue was discovered in libgig through 20200507
CVE-2018-18196 HIGH 8.8 DOWNGRADE An issue was discovered in libgig 4.1.0
CVE-2018-18195 MEDIUM 6.5 DOWNGRADE An issue was discovered in libgig 4.1.0
CVE-2018-18194 HIGH 8.8 DOWNGRADE An issue was discovered in libgig 4.1.0
CVE-2018-18193 HIGH 8.8 DOWNGRADE An issue was discovered in libgig 4.1.0

References

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