CVE-2024-47717

Host crash via stale PMU snapshot clearing

Published Oct 21, 2024 · Updated May 11, 2026

NULL pointer dereference in RISC-V KVM in Linux 6.10 through 6.11.1 allows local users to crash the host during guest teardown. kvm_pmu_clear_snapshot_area() attempts to zero a former guest PMU snapshot area after the guest has reclaimed that memory, causing kvm_vcpu_write_guest() to dereference an invalid address. Reachability requires RISC-V KVM with SBI PMU snapshot enabled and a forcefully powered-off guest; the demonstrated consequence is a host kernel crash.

CVSS severity5.5
Medium
EPSS probability0.22%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

NULL pointer dereference in RISC-V KVM in Linux 6.10 through 6.11.1 allows local users to crash the host during guest teardown. kvm_pmu_clear_snapshot_area() attempts to zero a former guest PMU snapshot area after the guest has reclaimed that memory, causing kvm_vcpu_write_guest() to dereference an invalid address. Reachability requires RISC-V KVM with SBI PMU snapshot enabled and a forcefully powered-off guest; the demonstrated consequence is a host kernel crash.

The record

CVE
CVE-2024-47717
Published
Oct 21, 2024
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-476, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 21, 2024CVE publishedPublication date reported by the CVE source.
  2. May 11, 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=6.10
  2. Affected versionversion=c2f41ddbcdd75689d9f512638a40263e3127be93 <47d40d93292d9cff8dabb735bed83d930fa03950
  3. Affected versionversion=c2f41ddbcdd75689d9f512638a40263e3127be93 <6d0a5dcfc78bd18f2abb9641f83380135494559b
  4. Affected versionversion=c2f41ddbcdd75689d9f512638a40263e3127be93 <81aa95fd5bd14ff49617f07fa79a8d1f1cf2ce9a

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=6.10; version=c2f41ddbcdd75689d9f512638a40263e3127be93 <47d40d93292d9cff8dabb735bed83d930fa03950; version=c2f41ddbcdd75689d9f512638a40263e3127be93 <6d0a5dcfc78bd18f2abb9641f83380135494559b; version=c2f41ddbcdd75689d9f512638a40263e3127be93 <81aa95fd5bd14ff49617f07fa79a8d1f1cf2ce9a

Published CVSS scores

5.5CanonicalCVSS: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.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-476NULL Pointer Dereference
T1499Endpoint Denial of Service

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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