DescriptionIn 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.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
Debian Bugs998622

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
glibc (PTS)buster2.28-10+deb10u1fixed
buster (security)2.28-10+deb10u3fixed
bullseye (security)2.31-13+deb11u10fixed
bookworm (security)2.36-9+deb12u7fixed
sid, trixie2.38-11fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
glibcsourcestretch(not affected)
glibcsourcebuster(not affected)


[buster] - glibc <not-affected> (Vulnerable code not present)
[stretch] - glibc <not-affected> (Vulnerable code not present)
Fixed by:;a=commit;h=ff012870b2c02a62598c04daa1e54632e020fd7d
Introduced by the fix for CVE-2021-3326 / BZ#27256:;a=commit;h=7d88c6142c6efc160c0ee5e4f85cde382c072888
No security impact per upstream assessment

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