DEBIAN-CVE-2023-4806

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Source
https://security-tracker.debian.org/tracker/DEBIAN-CVE-2023-4806
Import Source
https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2023-4806.json
JSON Data
https://api.test.osv.dev/v1/vulns/DEBIAN-CVE-2023-4806
Upstream
Published
2023-09-18T17:15:55Z
Modified
2025-09-19T07:33:29.963399Z
Summary
[none]
Details

A flaw was found in glibc. In an extremely rare situation, the getaddrinfo function may access memory that has been freed, resulting in an application crash. This issue is only exploitable when a NSS module implements only the nss_gethostbyname2_r and _nss_getcanonnamer hooks without implementing the nss*gethostbyname3r hook. The resolved name should return a large number of IPv6 and IPv4, and the call to the getaddrinfo function should have the AFINET6 address family with AICANONNAME, AIALL and AIV4MAPPED as flags.

References

Affected packages

Debian:12 / glibc

Package

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

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.36-9+deb12u3

Affected versions

2.*

2.36-9
2.36-9+deb12u1
2.36-9+deb12u2

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:13 / glibc

Package

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

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.37-10

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:14 / glibc

Package

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

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.37-10

Ecosystem specific 

{
    "urgency": "not yet assigned"
}