Mark Johnston 150df709c2 iconv: Fix a stack buffer overflow in _ISO2022_sputwchar() ...

In the ISO2022-CN encoding, characters may require at least seven bytes,
and MB_LEN_MAX==6 is insufficient.  From code inspection,
_ISO2022_sputwchar() can emit 10 bytes in the worst case, so use that to
size buffers.

Add a regression test.

Approved by:	so
Security:	FreeBSD-SA-26:49.iconv
Security:	CVE-2026-58082
Reviewed by:	kevans
Differential Revision:	https://reviews.freebsd.org/D57950

2026-06-30 17:00:23 +00:00

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BIG5

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DECHanyu

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EUC

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EUCTW

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GBK2K

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HZ

iconv: Fix a buffer overflow in the HZ encoding

2026-06-30 17:00:23 +00:00

iconv_none

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iconv_std

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ISO2022

iconv: Fix a stack buffer overflow in _ISO2022_sputwchar()

2026-06-30 17:00:23 +00:00

JOHAB

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mapper_646

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mapper_none

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mapper_parallel

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mapper_serial

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mapper_std

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mapper_zone

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MSKanji

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UES

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UTF7

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UTF8

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UTF1632

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VIQR

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ZW

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Makefile

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Makefile.inc

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