CVE-2026-6042
Description
A flaw was found in musl libc, specifically within the iconv function of the GB18030 4-byte Decoder component. A local attacker can exploit this vulnerability by performing a specific manipulation, leading to inefficient algorithmic complexity. This can result in a Denial of Service (DoS) due to excessive resource consumption, impacting system availability.
Statement
A MODERATE flaw in musl libc's iconv function, specifically within the GB18030 4-byte Decoder, allows a local attacker to trigger a Denial of Service. This vulnerability arises from inefficient algorithmic complexity when processing specific manipulations. Red Hat Enterprise Linux does not use musl libc as its default C library, limiting direct impact to environments or applications that explicitly utilize musl libc.
Understanding the Weakness (CWE)
Availability
Technical Impact: DoS: Resource Consumption (CPU); DoS: Resource Consumption (Memory); DoS: Resource Consumption (Other); Reduce Performance
This issue can make the product perform more slowly. If an attacker can influence the number of iterations in the loop, then this performance problem might allow a denial of service by consuming more platform resources than intended.
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