Medium 5.5Published May 28, 2026

CVE-2026-46171riscv: kvm: fix vector context allocation leak

Updated under an hour ago (Oct 27, 2026, 12:23 PM ET)

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Exploited in the last 30 days

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.

CVSS: 5.5 MEDIUM (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Modified
Record last updated: Oct 21, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from 0f4b82579716b12bb88257bd7ea80f25c791fb2c before 8f3a5dc4055e1001b44ca8ae2bd3eb1d07782049; from 0f4b82579716b12bb88257bd7ea80f25c791fb2c before 70ecebe7c58ce01f8da3f513eafb51bd147b1e63; from 0f4b82579716b12bb88257bd7ea80f25c791fb2c before bd62c0f61bc722a097417401030c596cea8e21aa; from 0f4b82579716b12bb88257bd7ea80f25c791fb2c before 1d57ab45ec5c0e22789de793bcf2a31ad6fb7d98; from 0f4b82579716b12bb88257bd7ea80f25c791fb2c before b7c958d7c1eb1cb9b2be7b5ee4129fcd66cec978	CNA record
linux linux_kernel linux:linux_kernel	from 6.5 before 6.18.30; from 6.19 before 7.0.7	NVD

References

References

https://git.kernel.org/stable/c/8f3a5dc4055e1001b44ca8ae2bd3eb1d07782049
https://git.kernel.org/stable/c/70ecebe7c58ce01f8da3f513eafb51bd147b1e63
https://git.kernel.org/stable/c/bd62c0f61bc722a097417401030c596cea8e21aa	patch
https://git.kernel.org/stable/c/1d57ab45ec5c0e22789de793bcf2a31ad6fb7d98	patch
https://git.kernel.org/stable/c/b7c958d7c1eb1cb9b2be7b5ee4129fcd66cec978	patch

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.