DEBIAN-CVE-2019-6293

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Source
https://security-tracker.debian.org/tracker/CVE-2019-6293
Import Source
https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2019-6293.json
JSON Data
https://api.test.osv.dev/v1/vulns/DEBIAN-CVE-2019-6293
Upstream
Published
2019-01-15T00:29:00.523Z
Modified
2025-11-14T04:03:22.821421Z
Severity
  • 5.5 (Medium) CVSS_V3 - CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H CVSS Calculator
Summary
[none]
Details

An issue was discovered in the function markbeginningasnormal in nfa.c in flex 2.6.4. There is a stack exhaustion problem caused by the markbeginningasnormal function making recursive calls to itself in certain scenarios involving lots of '*' characters. Remote attackers could leverage this vulnerability to cause a denial-of-service.

References

Affected packages

Debian:11 / flex

Package

Name
flex
Purl
pkg:deb/debian/flex?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

2.*

2.6.4-8
2.6.4-8.1
2.6.4-8.2

Ecosystem specific 

{
    "urgency": "unimportant"
}

Debian:12 / flex

Package

Name
flex
Purl
pkg:deb/debian/flex?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

2.*

2.6.4-8.2

Ecosystem specific 

{
    "urgency": "unimportant"
}

Debian:13 / flex

Package

Name
flex
Purl
pkg:deb/debian/flex?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

2.*

2.6.4-8.2

Ecosystem specific 

{
    "urgency": "unimportant"
}

Debian:14 / flex

Package

Name
flex
Purl
pkg:deb/debian/flex?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

2.*

2.6.4-8.2

Ecosystem specific 

{
    "urgency": "unimportant"
}