glibc: Converting crafted BIG-HKSCS input to UCS-4 or the internal wide character encoding, for example with iconv, in the G...
CVE-2026-122054 is fixed in glibc on 1 platform, first by DEBIAN-CVE-2026-122054, released November 5, 2026. It is not reported as exploited. Patch Radar priority: Routine.
Converting crafted BIG-HKSCS input to UCS-4 or the internal wide character encoding, for example with iconv, in the GNU C Library version 2.18 through 2.31 may result in the converter making no progress, causing the calling application to hang.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| glibc · Debian 12.15 (bookworm) | 2.32-1 | DEBIAN-CVE-2026-122054 | Nov 5, 2026 |
| glibc · Debian 13.5 (trixie) | 2.32-1 | DEBIAN-CVE-2026-122054 | Nov 5, 2026 |
| glibc · Debian 14 | 2.32-1 | DEBIAN-CVE-2026-122054 | Nov 5, 2026 |
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