CVE-2026-102474
Dash: dash: heap out-of-bounds write in conv_escape via undersized unicode escape reservation
CVSS Score
4.0
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-787 |
| Vendor | red hat |
| Product | red hat enterprise linux 6 |
| Published | Sep 29, 2026 |
| Last Updated | Sep 29, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
Low
Availability
None
Affected Versions
Red Hat / Red Hat Enterprise Linux 6
All versions affected References
Credits
Red Hat would like to thank Shubham Raj (Causal Security) for reporting this issue.