CVE-2026-102473
Dash: dash: super-polynomial backtracking in pmatch when libc fnmatch is disabled
CVSS Score
5.5
EPSS Score
0.0%
EPSS Percentile
0th
A flaw was found in dash. When built without libc fnmatch, the internal pmatch() matcher implements * by unbounded recursion over candidate positions. A local user who can plant filenames, or otherwise feed that matcher, can make a short multi-star pattern such as *.*.*.*.*.tar.gz consume excessive CPU.
| CWE | CWE-1333 |
| Vendor | red hat |
| Product | red hat enterprise linux 6 |
| Published | Sep 29, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
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.