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CVE PROGRAM SOURCE RECORD4.0 Medium

CVE-2026-102474

Dash: dash: heap out-of-bounds write in conv_escape via undersized unicode escape reservation

Description

A flaw was found in dash. The printf builtin reserves four bytes before converting a Unicode \u or \U escape, but the multi-byte token can need five or six bytes. A local user who can supply such an escape to dash printf or echo %b, including through dash -c and a positional argument, can write one or two bytes past that reservation.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Red Hat Red Hat Enterprise Linux 6

Default version status: unknown

References