A security flaw has been discovered in musl libc up to 1.2.6. Affected is the function iconv of the file src/locale/iconv.c of the component GB18030 4-byte Decoder. Performing a manipulation results in inefficient algorithmic complexity.
The attack must be initiated from a local position. To fix this issue, it is recommended to deploy a patch.
Attack Parameters
Attack Vector
Local
Requires local access
Attack Complexity
Low
Easy to exploit
Attack Requirements
None
No additional conditions
Privileges Required
Low
Basic privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
None
No data leak
Integrity
None
No data modification
Availability
Low
Partial disruption
CVSS Vector v4.0
Weakness Type (CWE)
References 6
https://vuldb.com/submit/796352
cna@vuldb.com
https://vuldb.com/vuln/356620
cna@vuldb.com
https://vuldb.com/vuln/356620/cti
cna@vuldb.com
https://www.openwall.com/lists/oss-security/2026/04/02/10
cna@vuldb.com
https://www.openwall.com/lists/oss-security/2026/04/03/2
cna@vuldb.com
http://www.openwall.com/lists/oss-security/2026/04/09/19
af854a3a-2127-422b-91ae-364da2661108