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Graph/iconv

Component

iconv

iconv

iconv

Node Details

Public graph metadata

Updated5/1/2026

Connections

4 linked nodes

WRITTEN_INLanguage

AFFECTSRootCause

the iconv loop framework guarantees to be available before calling the loop body. Outcome: Worst-case output for a single UCS4 character is 8 bytes.

PERTAIN_TOProblem

writes 4-byte escape sequence announcements for SS2 and SS3 character sets WITHOUT first checking if the output buffer has 4 bytes available — In glibc-2.38's iconv ISO-2022-CN-EXT encoder (iconvdata/iso-2022-cn-ext.c). Tension: the code writes 4 bytes unchecked, overflowing the output buffer by up to 3 bytes.

PROVIDED_BYComponent

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