CVE-2024-36910

Guest memory exposure via freed decrypted pages

Published May 30, 2024 · Updated Aug 5, 2026

Memory-management error in Linux kernel 5.16 and later allows attackers controlling an untrusted host to expose or corrupt confidential-VM memory. The uio_hv_generic VMBus driver frees pages that remain decrypted and shared when set_memory_decrypted() fails, returning them to the page allocator. Exploitation requires a confidential-computing VM and host-induced conversion failure; reuse of those pages can disclose or corrupt guest data or interrupt service.

CVSS severity8.4
High
EPSS probability0.25%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Memory-management error in Linux kernel 5.16 and later allows attackers controlling an untrusted host to expose or corrupt confidential-VM memory. The uio_hv_generic VMBus driver frees pages that remain decrypted and shared when set_memory_decrypted() fails, returning them to the page allocator. Exploitation requires a confidential-computing VM and host-induced conversion failure; reuse of those pages can disclose or corrupt guest data or interrupt service.

The record

CVE
CVE-2024-36910
Published
May 30, 2024
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-200, T1499
Attack vector
local
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

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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 <3d788b2fbe6a1a1a9e3db09742b90809d51638b7
  3. Affected versionversion=d4dccf353db80e209f262e3973c834e6e48ba9a9 <6466a0f6d235c8a18c602cb587160d7e49876db9
  4. Affected versionversion=d4dccf353db80e209f262e3973c834e6e48ba9a9 <dabf12bf994318d939f70d47cfda30e47abb2c54
  5. Affected versionversion=d4dccf353db80e209f262e3973c834e6e48ba9a9 <fe2c58602354fbd60680dc42ac3a0b772cda7d23

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.16; version=d4dccf353db80e209f262e3973c834e6e48ba9a9 <3d788b2fbe6a1a1a9e3db09742b90809d51638b7; version=d4dccf353db80e209f262e3973c834e6e48ba9a9 <6466a0f6d235c8a18c602cb587160d7e49876db9; version=d4dccf353db80e209f262e3973c834e6e48ba9a9 <dabf12bf994318d939f70d47cfda30e47abb2c54; version=d4dccf353db80e209f262e3973c834e6e48ba9a9 <fe2c58602354fbd60680dc42ac3a0b772cda7d23
The Linux Kernel Organization · Linux Kernelversion=1da177e4c3f4 <3d788b2fbe6a; version=1da177e4c3f4 <6466a0f6d235; version=1da177e4c3f4 <dabf12bf9943; version=1da177e4c3f4 <fe2c58602354

Published CVSS scores

8.4kernel.orgCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
6.2CISA-ADPCVSS:3.1/AV:L/AC:L/PR:N/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.

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No observations available

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

Weakness, pattern, technique

CWE-200Exposure of Sensitive Information to an Unauthorized Actor
T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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