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Security Advisory; NCSC-2026-0452 [1.0.0]
- Security Advisory
- NCSC-2026-0452 [1.0.0]
- Publicatie
- 22-10-2026 14:59 (Europe/Amsterdam)
- Prioriteit
- Normaal
- Betreft
- Kwetsbaarheden verholpen in FreeBSD bhyve hypervisor
Kenmerken
- Heap-based Buffer Overflow
- Buffer Over-read
- Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
- Time-of-check Time-of-use (TOCTOU) Race Condition
- Out-of-bounds Write
Omschrijving
De FreeBSD community heeft meerdere kwetsbaarheden verholpen in bhyve Hypervisor
De kwetsbaarheden betreffen race conditions, onjuiste validatie en synchronisatieproblemen in verschillende device modellen binnen de bhyve hypervisor. Een kwaadwillende gast-virtuele machine kan deze fouten misbruiken om een denial of service te veroorzaken door het bhyve proces te laten crashen of om arbitraire code uit te voeren in de host userspace. Dit kan plaatsvinden via manipulatie van event ring size en Transfer Request Block (TRB) velden in de USB 3 device model, het triggeren van out-of-bounds geheugen toegang door onjuiste controle van zero-length Buffer Descriptor List entries in de HDA audio device model, en door het misbruiken van duplicaten, unsynchronized constanten en ontbrekende validatie van resolutieparameters in de framebuffer device model. Deze kwetsbaarheden zijn specifiek voor systemen die de bhyve hypervisor gebruiken.
Oplossingen
FreeBSD heeft updates uitgebracht om deze kwetsbaarheden in de bhyve hypervisor te verhelpen. Zie bijgevoegde referenties voor meer informatie.
Referenties
CVE's
- CVE-2026-101307 - CVSS (v4) 8.2
- CVE-2026-101308 - CVSS (v3) 5.5
- CVE-2026-101309 - CVSS (v3) 7.0
- CVE-2026-101310 - CVSS (v3) 7.0
- CVE-2026-101311 - CVSS (v3) 7.0
Producten
FreeBSD
Disclaimer
The Netherlands Cyber Security Center (henceforth: NCSC-NL) maintains this page to enhance access to its information and security advisories. The use of this security advisory is subject to the following terms and conditions: NCSC-NL makes every reasonable effort to ensure that the content of this page is kept up to date, and that it is accurate and complete. Nevertheless, NCSC-NL cannot entirely rule out the possibility of errors, and therefore cannot give any warranty in respect of its completeness, accuracy or continuous keeping up-to-date. The information contained in this security advisory is intended solely for the purpose of providing general information to professional users. No rights can be derived from the information provided therein. NCSC-NL and the Kingdom of the Netherlands assume no legal liability or responsibility for any damage resulting from either the use or inability of use of this security advisory. This includes damage resulting from the inaccuracy of incompleteness of the information contained in the advisory. This security advisory is subject to Dutch law. All disputes related to or arising from the use of this advisory will be submitted to the competent court in The Hague. This choice of means also applies to the court in summary proceedings.