CVE-2021-29507: GENIVI Diagnostic Log and Trace (DLT) provides a log and trace interface

Routine

MEDIUM 5.7UPGRADE

CVE-2021-29507 is a medium-severity flaw (CVSS 5.7) affecting diagnostic log and trace. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

GENIVI Diagnostic Log and Trace (DLT) provides a log and trace interface. In versions of GENIVI DLT between 2.10.0 and 2.18.6, a configuration file containing the special characters could cause a vulnerable component to crash. All the applications which are using the configuration file could fail to generate their dlt logs in system. As of time of publication, no patch exists. As a workaround, one may check the integrity of information in configu

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	5.7 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	Required
EPSS exploit chance	0.7% (top 45%)
CISA exploited list	No
Weakness	CWE-20
Published	2021-05-28
Last modified	2026-06-17

Publisher (CNA): GitHub, Inc. · Vendor: genivi

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

Am I affected?

Timeline

2021-05-28 21:15 UTCPublished CVE record published
2026-06-17 03:47 UTCUpdated Record last modified

genivi diagnostic log and trace UPGRADE

Affected: >= 2.10.0 and <= 2.18.6

Fixed in: newer than 2.18.6

Safe to downgrade to: a release before 2.10.0

1. Check installed version

apt-cache policy diagnostic-log-and-trace || rpm -q diagnostic-log-and-trace || diagnostic-log-and-trace --version

2. UPGRADE to newer than 2.18.6 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade diagnostic-log-and-trace

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade diagnostic-log-and-trace

Note

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

3. If no update is available yet, DOWNGRADE to a release before 2.10.0 (Debian / Ubuntu)

apt-cache madison diagnostic-log-and-trace sudo apt install diagnostic-log-and-trace=<VERSION_BEFORE_2.10.0> sudo apt-mark hold diagnostic-log-and-trace

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list diagnostic-log-and-trace sudo dnf downgrade diagnostic-log-and-trace-<VERSION_BEFORE_2.10.0> sudo dnf versionlock add diagnostic-log-and-trace

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-2021-29507?

diagnostic log and trace: upgrade to newer than 2.18.6. Exact commands for each OS are on this page.

Is CVE-2021-29507 being exploited?

CVE-2021-29507 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-2021-29507 affect?

CVE-2021-29507 affects diagnostic log and trace. Severity is medium (CVSS 5.7). GENIVI Diagnostic Log and Trace (DLT) provides a log and trace interface. In versions of GENIVI DLT between 2.10.0 and 2.18.6, a configuration file containing the special characters could cause a vulnerable component to crash. All the appli

How urgent is CVE-2021-29507?

Priority 34/100. No elevated risk signals yet.

Related CVEs

CVE-2022-39837 MEDIUM 5.5 UPGRADE An issue was discovered in Connected Vehicle Systems Alliance (COVESA) dlt-daemon through 2.18.8
CVE-2022-39836 MEDIUM 5.5 UPGRADE An issue was discovered in Connected Vehicle Systems Alliance (COVESA) dlt-daemon through 2.18.8
CVE-2022-31291 HIGH 7.5 DOWNGRADE MITIGATE An issue in dlt_config_file_parser.c of dlt-daemon v2.18.8 allows attackers to cause a double free via crafted
CVE-2020-36244 CRITICAL 9.8 UPGRADE MITIGATE The daemon in GENIVI diagnostic log and trace (DLT), is vulnerable to a heap-based buffer overflow that could
CVE-2020-29394 HIGH 7.8 UPGRADE MITIGATE A buffer overflow in the dlt_filter_load function in dlt_common.c from dlt-daemon through 2.18.5 (GENIVI Diagn

References

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