CVE-2025-39823

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Source
https://cve.org/CVERecord?id=CVE-2025-39823
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-39823.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2025-39823
Downstream
Related
Published
2025-09-16T13:00:22.298Z
Modified
2026-03-13T04:08:17.963235Z
Summary
KVM: x86: use array_index_nospec with indices that come from guest
Details

In the Linux kernel, the following vulnerability has been resolved:

KVM: x86: use arrayindexnospec with indices that come from guest

min and destid are guest-controlled indices. Using arrayindex_nospec() after the bounds checks clamps these values to mitigate speculative execution side-channels.

Database specific 
{
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/39xxx/CVE-2025-39823.json"
}
References

Affected packages

Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git

Affected ranges

Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
4180bf1b655a791a0a6ef93a2ffffc762722c782
Fixed
72777fc31aa7ab2ce00f44bfa3929c6eabbeaf48
Fixed
31a0ad2f60cb4816e06218b63e695eb72ce74974
Fixed
d51e381beed5e2f50f85f49f6c90e023754efa12
Fixed
33e974c2d5a82b2f9d9ba0ad9cbaabc1c8e3985f
Fixed
f49161646e03d107ce81a99c6ca5da682fe5fb69
Fixed
67a05679621b7f721bdba37a5d18665d3aceb695
Fixed
f57a4bd8d6cb5af05b8ac1be9098e249034639fb
Fixed
c87bd4dd43a624109c3cc42d843138378a7f4548

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-39823.json"