In iconvdata/iso-2022-jp-3.c in the GNU C Library (aka glibc) 2.34, remote attackers can force iconv() to emit a spurious '\0' character via crafted ISO-2022-JP-3 data that is accompanied by an internal state reset. This may affect data integrity in certain iconv() use cases. NOTE: the vendor states "the bug cannot be invoked through user input and requires iconv to be invoked with a NULL inbuf, which ought to require a separate application bug to do so unintentionally. Hence there's no security impact to the bug.
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History
Wed, 14 Oct 2026 12:30:00 +0000
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Status: PUBLISHED
Assigner: mitre
Published: 2021-11-04T19:52:49.000Z
Updated: 2026-10-14T11:53:51.689Z
Reserved: 2021-11-04T00:00:00.000Z
Link: CVE-2021-43396
No data.
Status : Modified
Published: 2021-11-04T20:15:09.223
Modified: 2026-10-14T12:17:16.160
Link: CVE-2021-43396