CVE-2026-31969
Description
A flaw was found in HTSlib, a library used for bioinformatics file formats. A remote attacker could exploit an out-by-one error when processing a specially crafted CRAM (Compressed Reference-oriented Alignment Map) file. This vulnerability can lead to a heap buffer overflow, potentially allowing for arbitrary code execution, data corruption, or causing the program to crash. This poses a significant risk to the integrity and availability of systems handling bioinformatics data.
Statement
Red Hat Product Security has determined that this vulnerability does not affect any currently supported Red Hat product. This assessment may evolve based on further analysis and discovery. For more information about this vulnerability and the products it affects, please see the linked references.
Mitigation
Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.
Understanding the Weakness (CWE)
Integrity
Technical Impact: Modify Memory; Execute Unauthorized Code or Commands
Write operations could cause memory corruption. In some cases, an adversary can modify control data such as return addresses in order to execute unexpected code.
Availability
Technical Impact: DoS: Crash, Exit, or Restart
Attempting to access out-of-range, invalid, or unauthorized memory could cause the product to crash.
Other
Technical Impact: Unexpected State
Subsequent write operations can produce undefined or unexpected results.
Frequently Asked Questions
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