CVE-2026-4046

Description

The iconv() function in the GNU C Library versions 2.43 and earlier may crash due to an assertion failure when converting inputs from the IBM1390 or IBM1399 character sets, which may be used to remotely crash an application. This vulnerability can be trivially mitigated by removing the IBM1390 and IBM1399 character sets from systems that do not need them.

PUBLISHED Reserved 2026-03-12 | Published 2026-03-30 | Updated 2026-04-20 | Assigner glibc

Problem types

CWE-617 Reachable assertion

Product status

Credits

Rocket Ma finder

References

sourceware.org/bugzilla/show_bug.cgi?id=33980 issue-tracking

sourceware.org/...in;f=advisories/GLIBC-SA-2026-0007;hb=HEAD vendor-advisory

inbox.sourceware.org/...47ec-979d-2dce0a2c76bf@gotplt.org/T/ mailing-list

cve.org (CVE-2026-4046)

nvd.nist.gov (CVE-2026-4046)

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