CVE-2026-43631
CVE-2026-43631: 1 tracked advisory record across Red Hat. Compare vendor sources and published fix guidance.
Compare the source-linked records below. Ratings and product/version details belong to each advisory; they are not a single CVE-wide score or proof that every listed product is affected. How VulniPulse collects and checks evidence.
Vendor advisory comparison
Red Hat
1 advisory- Advisory severityHigh8.1
High [CVE-2026-43631] Remote code execution via use-after-free vulnerability in llama-server
CVE-2026-43631Source published Source updated
llama.cpp builds b7492 through the latest b9060 contains a use-after-free vulnerability in the vocab pointer of llama-server when the --sleep-idle-seconds feature is enabled, allowing unauthenticated remote attackers to execute arbitrary code. Attackers can trigger the vulnerability by sending requests to affected endpoints while the server transitions to sleep mode, causing concurrent worker threads to dereference a freed vocab pointer that can be reclaimed with attacker-controlled data to achieve remote code execution. Exploitation requires sending network requests to the HTTP server during the specific, narrow window when the service transitions into an idle sleep state. If successfully timing the race condition, an unauthenticated attacker could corrupt server memory to achieve full…
- Affected products in this advisory
- No product details extracted. Check the source bulletin.
- Source-reported affected versions
- Affected-version details not available in this record.
- Source-reported fixed versions
- No fixed-version detail extracted. This does not mean no fix exists.
- Mitigation guidance
- To mitigate this vulnerability, disable the `--sleep-idle-seconds` feature in the llama-server configuration. This feature is a prerequisite for the vulnerability to be exploited. Consult the llama.cpp documentation for specific instructions on disabling server features. A restart of the llama-server may be required for the changes to take effect.
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