CVE-2024-35980

Destination VM crash via malformed TLBI RANGE operand

Published May 20, 2024 · Updated Aug 5, 2026

Integer underflow in the arm64 TLB flush path in Linux allows local users to crash a destination VM after live migration. __TLBI_RANGE_NUM rejects SCALE 3 and NUM 31, allowing the scale counter to underflow and __TLBI_VADDR_RANGE to encode an invalid flush operand. The issue requires an arm64 KVM host with TLBI RANGE support performing dirty-page write protection during live migration; incomplete TLB invalidation crashes the migrated guest.

CVSS severity8.4
High
EPSS probability0.23%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Integer underflow in the arm64 TLB flush path in Linux allows local users to crash a destination VM after live migration. __TLBI_RANGE_NUM rejects SCALE 3 and NUM 31, allowing the scale counter to underflow and __TLBI_VADDR_RANGE to encode an invalid flush operand. The issue requires an arm64 KVM host with TLBI RANGE support performing dirty-page write protection during live migration; incomplete TLB invalidation crashes the migrated guest.

The record

CVE
CVE-2024-35980
Published
May 20, 2024
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-191, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 20, 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=117940aa6e5f8308f1529e1313660980f1dae771 <944db7b536baaf49d7e576af36a94f4719552b07
  2. Affected versionversion=117940aa6e5f8308f1529e1313660980f1dae771 <ac4ad513de4fba18b4ac0ace132777d0910e8cfa
  3. Affected versionversion=117940aa6e5f8308f1529e1313660980f1dae771 <e3ba51ab24fddef79fc212f9840de54db8fd1685
  4. Affected versionversion=6.6

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=117940aa6e5f8308f1529e1313660980f1dae771 <944db7b536baaf49d7e576af36a94f4719552b07; version=117940aa6e5f8308f1529e1313660980f1dae771 <ac4ad513de4fba18b4ac0ace132777d0910e8cfa; version=117940aa6e5f8308f1529e1313660980f1dae771 <e3ba51ab24fddef79fc212f9840de54db8fd1685; version=6.6

Published CVSS scores

5.5UbuntuCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
8.4kernel.orgCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:H/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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-191Integer Underflow (Wrap or Wraparound)
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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