CVE-2026-103634 (GCVE-0-2026-103634)

Vulnerability from cvelistv5 – Published: 2026-10-22 06:42 – Updated: 2026-10-22 07:16
VLAI
Title
Apache DataSketches: datasketches-cpp: Out-of-bounds read and write in Count-Min sketch deserialization allows memory corruption via a crafted sketch
Summary
Out-of-bounds read and write in the Count-Min sketch deserialization of Apache DataSketches C++ (repo: datasketches-cpp). count_min_sketch::deserialize() did not include the preamble in its input size check, so a truncated sketch could cause a read of up to 16 bytes past the end of the input. In addition, the table size was computed from the serialized number of buckets and number of hash functions in 32-bit arithmetic. A crafted sketch could make it wrap to zero, so that the sketch deserialized with an empty table, and later updates and estimate queries read and wrote outside the heap allocation. This can corrupt heap memory, causing a crash and potentially enabling further exploitation. This issue affects Apache DataSketches C++: from 4.1.0 before 5.3.0. Only applications that deserialize Count-Min sketches from untrusted sources are affected. Users are recommended to upgrade to version 5.3.0, which fixes this issue.
Severity
No CVSS data available.
CWE
  • CWE-787 - Out-of-bounds write
  • CWE-190 - Integer overflow or wraparound
Assigner
apache CNA under the mitre root
CNA scorecard B 76/100 over 1068 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Apache Software Foundation Apache DataSketches Affected: 4.1.0 , ≤ 5.2.0 (semver)
guessed Create a notification for this product.
Credits
He Huang NexusSan
Show details on NVD website
To clipboard 

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