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CVE-2025-32366

In ConnMan through 1.44, parse_rr in dnsproxy.c has a memcpy length that depends on an RR...

4.8 MediumFix available

In ConnMan through 1.44, parse_rr in dnsproxy.c has a memcpy length that depends on an RR RDLENGTH value, i.e., *rdlen=ntohs(rr->rdlen) and memcpy(response+offset,*end,*rdlen) without a check for whether the sum of *end and *rdlen exceeds max. Consequently, *rdlen may be larger than the amount of remaining packet data in the current state of parsing. Values of stack memory locations may be sent over the network in a response.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
High
Privileges needed
None
User interaction
None

What an attacker can affect

Confidentiality
Low
Integrity
None
Availability
Low

Exploit likelihood

0.41%Up 0.4 points since Apr 6, 2025
90%50%10%1%

What each source reports

CVE List Score used 4.8

In ConnMan through 1.44, parse_rr in dnsproxy.c has a memcpy length that depends on an RR RDLENGTH value, i.e., *rdlen=ntohs(rr->rdlen) and memcpy(response+offset,*end,*rdlen) without a check for whether the sum of *end and *rdlen exceeds max. Consequently, *rdlen may be larger than the amount of remaining packet data in the current state of parsing. Values of stack memory locations may be sent over the network in a response.

Record
CVE-2025-32366
CVSS 3.1
4.8 MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:L
Weakness
CWE-130
Updated
2026-11-02
EUVDEUVD-2025-9924 4.8

In ConnMan through 1.44, parse_rr in dnsproxy.c has a memcpy length that depends on an RR RDLENGTH value, i.e., *rdlen=ntohs(rr->rdlen) and memcpy(response+offset,*end,*rdlen) without a check for whether the sum of *end and *rdlen exceeds max. Consequently, *rdlen may be larger than the amount of remaining packet data in the current state of parsing. Values of stack memory locations may be sent over the network in a response.

Record
EUVD-2025-9924
CVSS 3.1
4.8 MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:L
Updated
2026-11-02
GitHub AdvisoriesGHSA-9j63-jqr8-fh2v 3.7

In ConnMan through 1.44, parse_rr in dnsproxy.c has a memcpy length that depends on an RR...

In ConnMan through 1.44, parse_rr in dnsproxy.c has a memcpy length that depends on an RR RDLENGTH value, i.e., *rdlen=ntohs(rr->rdlen) and memcpy(response+offset,*end,*rdlen).

Record
GHSA-9j63-jqr8-fh2v
CVSS 3.1
3.7 LowCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
Weakness
CWE-130
Updated
2026-11-02
NVD 4.8

In ConnMan through 1.44, parse_rr in dnsproxy.c has a memcpy length that depends on an RR RDLENGTH value, i.e., *rdlen=ntohs(rr->rdlen) and memcpy(response+offset,*end,*rdlen) without a check for whether the sum of *end and *rdlen exceeds max. Consequently, *rdlen may be larger than the amount of remaining packet data in the current state of parsing. Values of stack memory locations may be sent over the network in a response.

Record
CVE-2025-32366
CVSS 3.1
4.8 MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:L
Weakness
CWE-130
Updated
2026-11-02
OSVDEBIAN-CVE-2025-32366 4.8

In ConnMan through 1.44, parse_rr in dnsproxy.c has a memcpy length that depends on an RR RDLENGTH value, i.e., *rdlen=ntohs(rr->rdlen) and memcpy(response+offset,*end,*rdlen) without a check for whether the sum of *end and *rdlen exceeds max. Consequently, *rdlen may be larger than the amount of remaining packet data in the current state of parsing. Values of stack memory locations may be sent over the network in a response.

Record
DEBIAN-CVE-2025-32366
CVSS 3.1
4.8 MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:L
Updated
2026-11-02
OSVUBUNTU-CVE-2025-32366 4.8

In ConnMan through 1.44, parse_rr in dnsproxy.c has a memcpy length that depends on an RR RDLENGTH value, i.e., *rdlen=ntohs(rr->rdlen) and memcpy(response+offset,*end,*rdlen) without a check for whether the sum of *end and *rdlen exceeds max. Consequently, *rdlen may be larger than the amount of remaining packet data in the current state of parsing. Values of stack memory locations may be sent over the network in a response.

Record
UBUNTU-CVE-2025-32366
CVSS 3.1
4.8 MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:L
Updated
2026-11-02
OSV No score

In ConnMan through 1.44, parse_rr in dnsproxy.c has a memcpy length that depends on an RR RDLENGTH value, i.e., *rdlen=ntohs(rr->rdlen) and memcpy(response+offset,*end,*rdlen) without a check for whether the sum of *end and *rdlen exceeds max. Consequently, *rdlen may be larger than the amount of remaining packet data in the current state of parsing. Values of stack memory locations may be sent over the network in a response.

Record
CVE-2025-32366
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
connman
Debian:12
 All versions, plus listed versions
1.41-31.42-11.42-21.42-31.42-4
Show 10 moreShow less
1.42-51.43-11.44-11.44-21.44-31.45-11.45-21.45-32.0-12.0-2
 None known
connman
Debian:13
 before 1.44-3
1.44-3
connman
Debian:14
 before 1.44-3
1.44-3
connman
Ubuntu:Pro:16.04:LTS
 All versions, plus listed versions
1.21-1.21.21-1.2build11.21-1.2build21.21-1.2+deb8u1build0.16.04.11.21-1.2+deb8u1ubuntu0.1~esm1
 None known
connman
Ubuntu:Pro:18.04:LTS
 All versions, plus listed versions
1.35-11.35-21.35-61.35-6ubuntu0.1~esm1
 None known
connman
Ubuntu:20.04:LTS
 All versions, plus listed versions
1.36-2build11.36-2ubuntu0.1
 None known
connman
Ubuntu:22.04:LTS
 All versions, plus listed versions
1.36-2.2build11.36-2.31.36-2.3build11.36-2.3ubuntu0.1
 None known
connman
Ubuntu:24.04:LTS
 All versions, plus listed versions
1.41-31.42-11.42-31.42-51.42-5build21.42-5build3
 None known
connman
Ubuntu:25.10
 All versions, plus listed versions
1.43-11.44-11.44-21.44-3
 None known
connman
Ubuntu:26.10
 All versions, plus listed versions
1.45-32.0-2
 None known
connman
Ubuntu:26.04:LTS
 All versions, plus listed versions
1.44-31.45-21.45-3
 None known

History

History
RecordedChangedSources
first indexedCVE List, EUVD, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2025-32366 is a medium vulnerability (CVSS 4.8) in Connman, published April 5, 2025. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.41%, the 35th percentile. Fixed in connman 1.44-3.

References

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