CVE-2026-46171
In the Linux kernel, the following vulnerability has been resolved: riscv: kvm: fix vector context allocation leak When the second kzalloc (host_context.vector.datap) fails in kvm_riscv_vcpu_alloc_vector_context, the first allocation (guest_context.vector.datap) is leaked. Free it before returning.
Affected versions
Linux kernel versions
6.5
and later are affected. Fixed in
6.18.30,
7.0.7,
7.1-rc1
and their respective stable series.
References
The following references provide additional information about CVE-2026-46171 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.
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PatchKernel patch commithttps://git.kernel.org/stable/c/1d57ab45ec5c0e22789de793bcf2a31ad6fb7d98
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PatchKernel patch commithttps://git.kernel.org/stable/c/b7c958d7c1eb1cb9b2be7b5ee4129fcd66cec978
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PatchKernel patch commithttps://git.kernel.org/stable/c/bd62c0f61bc722a097417401030c596cea8e21aa
Frequently asked questions
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What is CVE-2026-46171?
CVE-2026-46171 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 6.5 onward and has been patched in 6.18.30, 7.0.7 and 7.1-rc1. CVE-2026-46171 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
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Is there a patch available for CVE-2026-46171?
Yes — CVE-2026-46171 has been patched. Fixed versions include 6.18.30, 7.0.7 and 7.1-rc1. If you are running Linux kernel 6.5 or later up to the fix versions, apply the relevant patch for your kernel branch.
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Is CVE-2026-46171 actively exploited?
No — CVE-2026-46171 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.