{"document":{"aggregate_severity":{"namespace":"https://www.suse.com/support/security/rating/","text":"critical"},"category":"csaf_vex","csaf_version":"2.0","distribution":{"text":"Copyright 2024 SUSE LLC. All rights reserved.","tlp":{"label":"WHITE","url":"https://www.first.org/tlp/"}},"lang":"en","notes":[{"category":"summary","text":"SUSE CVE-2026-21869","title":"Title"},{"category":"description","text":"llama.cpp is an inference of several LLM models in C/C++. In commits 55d4206c8 and prior, the n_discard parameter is parsed directly from JSON input in the llama.cpp server's completion endpoints without validation to ensure it's non-negative. When a negative value is supplied and the context fills up, llama_memory_seq_rm/add receives a reversed range and negative offset, causing out-of-bounds memory writes in the token evaluation loop. This deterministic memory corruption can crash the process or enable remote code execution (RCE). There is no fix at the time of publication.","title":"Description of the CVE"},{"category":"legal_disclaimer","text":"CSAF 2.0 data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0).","title":"Terms of use"}],"publisher":{"category":"vendor","contact_details":"https://www.suse.com/support/security/contact/","name":"SUSE Product Security Team","namespace":"https://www.suse.com/"},"references":[{"category":"external","summary":"CVE-2026-21869","url":"https://www.suse.com/security/cve/CVE-2026-21869"},{"category":"external","summary":"SUSE Security Ratings","url":"https://www.suse.com/support/security/rating/"},{"category":"external","summary":"SUSE Bug 1256299 for CVE-2026-21869","url":"https://bugzilla.suse.com/1256299"}],"title":"SUSE CVE CVE-2026-21869","tracking":{"current_release_date":"2026-02-04T00:25:21Z","generator":{"date":"2026-01-09T00:23:51Z","engine":{"name":"cve-database.git:bin/generate-csaf-vex.pl","version":"1"}},"id":"CVE-2026-21869","initial_release_date":"2026-01-09T00:23:51Z","revision_history":[{"date":"2026-01-09T00:23:51Z","number":"2","summary":"references added,severity changed from  to important"},{"date":"2026-02-04T00:25:21Z","number":"3","summary":"severity changed from important to critical"}],"status":"interim","version":"3"}}}