CVE-2017-9831: An integer overflow vulnerability in the ptp_unpack_EOS_CustomFuncEx function of the ptp-pack.c file of libmtp

Routine

MEDIUM 6.8DOWNGRADE

CVE-2017-9831 is a medium-severity flaw (CVSS 6.8) affecting libmtp. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

An integer overflow vulnerability in the ptp_unpack_EOS_CustomFuncEx function of the ptp-pack.c file of libmtp (version 1.1.12 and below) allows attackers to cause a denial of service (out-of-bounds memory access) or maybe remote code execution by inserting a mobile device into a personal computer through a USB cable.

Why this priority

No elevated risk signals yet

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

Risk facts

CVSS score	6.8 (Medium)
Attack vector	Physical
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.9% (top 42%)
CISA exploited list	No
Weakness	CWE-190
Published	2017-06-24
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: libmtp project

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

Am I affected?

Timeline

2017-06-24 00:29 UTCPublished CVE record published
2026-06-17 01:29 UTCUpdated Record last modified

libmtp project libmtp DOWNGRADE

Affected: 1.1.12

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.1.12

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 1.1.12 (Debian / Ubuntu)

apt-cache madison libmtp sudo apt install libmtp=<VERSION_BEFORE_1.1.12> sudo apt-mark hold libmtp

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

dnf --showduplicates list libmtp sudo dnf downgrade libmtp-<VERSION_BEFORE_1.1.12> sudo dnf versionlock add libmtp

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-2017-9831?

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

Is CVE-2017-9831 being exploited?

CVE-2017-9831 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-2017-9831 affect?

CVE-2017-9831 affects libmtp. Severity is medium (CVSS 6.8). An integer overflow vulnerability in the ptp_unpack_EOS_CustomFuncEx function of the ptp-pack.c file of libmtp (version 1.1.12 and below) allows attackers to cause a denial of service (out-of-bounds memory access) or maybe remote code execu

How urgent is CVE-2017-9831?

Priority 38/100. No elevated risk signals yet.

Related CVEs

CVE-2017-9832 MEDIUM 6.8 UPGRADE An integer overflow vulnerability in ptp-pack.c (ptp_unpack_OPL function) of libmtp (version 1.1.12 and below)

References

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