CVE-2017-15955: bchunk (related to BinChunker) 1.2.0 and 1.2.1 is vulnerable to an "Access violation near NULL on destination

Routine

MEDIUM 5.5WATCHLISTMITIGATEDOWNGRADE

CVE-2017-15955 is a medium-severity flaw (CVSS 5.5) affecting debian linux, bchunk. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

bchunk (related to BinChunker) 1.2.0 and 1.2.1 is vulnerable to an "Access violation near NULL on destination operand" and crash when processing a malformed CUE (.cue) file.

Why this priority

On your watchlist

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	0.9% (top 40%)
CISA exploited list	No
Weakness	CWE-476
Published	2017-10-28
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: bchunk project · debian

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

Am I affected?

Timeline

2017-10-28 21:29 UTCPublished CVE record published
2026-06-17 01:08 UTCUpdated Record last modified

debian debian linux MITIGATE

Affected: 8.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 8.0

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

bchunk project bchunk DOWNGRADE

Affected: 1.2.0 · 1.2.1

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.2.0

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 1.2.0 (Debian / Ubuntu)

apt-cache madison bchunk sudo apt install bchunk=<VERSION_BEFORE_1.2.0> sudo apt-mark hold bchunk

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

dnf --showduplicates list bchunk sudo dnf downgrade bchunk-<VERSION_BEFORE_1.2.0> sudo dnf versionlock add bchunk

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-2017-15955?

debian linux: mitigate or apply the listed mitigation; bchunk: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2017-15955 being exploited?

CVE-2017-15955 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-2017-15955 affect?

CVE-2017-15955 affects debian linux, bchunk. Severity is medium (CVSS 5.5). bchunk (related to BinChunker) 1.2.0 and 1.2.1 is vulnerable to an "Access violation near NULL on destination operand" and crash when processing a malformed CUE (.cue) file.

How urgent is CVE-2017-15955?

Priority 39/100. On your watchlist

Software pages

Debian vulnerabilities

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References

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