CVE-2026-6042

LOW

musl libc GB18030 4-byte Decoder iconv.c iconv algorithmic complexity

Title source: cna

Description

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.

References (6)

[Vdb Entry, Technical Description] https://vuldb.com/vuln/356620

[Signature, Permissions Required] https://vuldb.com/vuln/356620/cti

[Third Party Advisory] https://vuldb.com/submit/796352

[Related] https://www.openwall.com/lists/oss-security/2026/04/02/10

[Patch] https://www.openwall.com/lists/oss-security/2026/04/03/2

[Mailing List] http://www.openwall.com/lists/oss-security/2026/04/09/19

Scores

CVSS v3 3.3

EPSS 0.0001

EPSS Percentile 2.1%

Attack Vector LOCAL

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

Details

CWE

CWE-404 CWE-407

Status published

Products (7)

musl/libc 1.2.0

musl/libc 1.2.1

musl/libc 1.2.2

musl/libc 1.2.3

musl/libc 1.2.4

musl/libc 1.2.5

musl/libc 1.2.6

Published Apr 10, 2026

Tracked Since Apr 10, 2026