CVE-2024-36911Network attack vector

Guest memory compromise via shared-page deallocation

Published May 30, 2024 · Updated Aug 5, 2026

Memory flaw in Linux hv_netvsc 5.16 through 6.6.30, 6.7, and 6.8 through 6.8.9 allows attackers controlling a VM host to compromise guest memory. On a failed set_memory_decrypted() call, netvsc frees the GPADL pages without checking its decrypted flag, returning shared pages to the allocator. Reachability requires a Hyper-V confidential-computing guest using netvsc; reuse of the shared pages can expose or corrupt guest data or destabilize the guest.

CVSS severity5.5
Medium
EPSS probability0.61%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Memory flaw in Linux hv_netvsc 5.16 through 6.6.30, 6.7, and 6.8 through 6.8.9 allows attackers controlling a VM host to compromise guest memory. On a failed set_memory_decrypted() call, netvsc frees the GPADL pages without checking its decrypted flag, returning shared pages to the allocator. Reachability requires a Hyper-V confidential-computing guest using netvsc; reuse of the shared pages can expose or corrupt guest data or destabilize the guest.

The record

CVE
CVE-2024-36911
Published
May 30, 2024
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-401
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 30, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=5.16
  2. Affected versionversion=d4dccf353db80e209f262e3973c834e6e48ba9a9 <4aaed9dbe8acd2b6114458f0498a617283d6275b
  3. Affected versionversion=d4dccf353db80e209f262e3973c834e6e48ba9a9 <a56fe611326332bf6b7126e5559590c57dcebad4
  4. Affected versionversion=d4dccf353db80e209f262e3973c834e6e48ba9a9 <bbf9ac34677b57506a13682b31a2a718934c0e31

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.16; version=d4dccf353db80e209f262e3973c834e6e48ba9a9 <4aaed9dbe8acd2b6114458f0498a617283d6275b; version=d4dccf353db80e209f262e3973c834e6e48ba9a9 <a56fe611326332bf6b7126e5559590c57dcebad4; version=d4dccf353db80e209f262e3973c834e6e48ba9a9 <bbf9ac34677b57506a13682b31a2a718934c0e31

Published CVSS scores

9.8Linux Kernel CNACVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-401Missing Release of Memory after Effective Lifetime

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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