CVE-2024-53145

UML startup termination via signed map-size overflow

Published Dec 24, 2024 · Updated May 11, 2026

Integer overflow in Linux kernel 4.1 through 6.12.1 allows local users to terminate a UML/i386 instance during physical-memory setup. setup_physmem stores the unsigned len-minus-reserve result in a signed long, so values above LONG_MAX become negative and trigger the too-little-memory exit path. Exploitation requires local control of an i386 User-Mode Linux launch with an oversized physical-memory map and interrupts only that UML instance.

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

Integer overflow in Linux kernel 4.1 through 6.12.1 allows local users to terminate a UML/i386 instance during physical-memory setup. setup_physmem stores the unsigned len-minus-reserve result in a signed long, so values above LONG_MAX become negative and trigger the too-little-memory exit path. Exploitation requires local control of an i386 User-Mode Linux launch with an oversized physical-memory map and interrupts only that UML instance.

The record

CVE
CVE-2024-53145
Published
Dec 24, 2024
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-190, T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 24, 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=4.1
  2. Affected versionversion=fe205bdd1321f95f8f3c35d243ea7cb22af8fbe1 <1575df968650d11771359e5ac78278c5b0cc19f3
  3. Affected versionversion=fe205bdd1321f95f8f3c35d243ea7cb22af8fbe1 <1bd118c5f887802cef2d9ba0d1917258667f1cae
  4. Affected versionversion=fe205bdd1321f95f8f3c35d243ea7cb22af8fbe1 <5c710f45811e7e2bfcf703980c306f19c7e1ecfe
  5. Affected versionversion=fe205bdd1321f95f8f3c35d243ea7cb22af8fbe1 <a875c023155ea92b75d6323977003e64d92ae7fc
  6. Affected versionversion=fe205bdd1321f95f8f3c35d243ea7cb22af8fbe1 <a98b7761f697e590ed5d610d87fa12be66f23419
  7. Affected versionversion=fe205bdd1321f95f8f3c35d243ea7cb22af8fbe1 <a9c95f787b88b29165563fd97761032db77116e7
  8. Affected versionversion=fe205bdd1321f95f8f3c35d243ea7cb22af8fbe1 <d1a211e5210d31da8f49fc0021bf7129b726468c
  9. Affected versionversion=fe205bdd1321f95f8f3c35d243ea7cb22af8fbe1 <e6102b72edc4eb8c0858df00ba74b5ce579c8fa2

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=4.1; version=fe205bdd1321f95f8f3c35d243ea7cb22af8fbe1 <1575df968650d11771359e5ac78278c5b0cc19f3; version=fe205bdd1321f95f8f3c35d243ea7cb22af8fbe1 <1bd118c5f887802cef2d9ba0d1917258667f1cae; version=fe205bdd1321f95f8f3c35d243ea7cb22af8fbe1 <5c710f45811e7e2bfcf703980c306f19c7e1ecfe; version=fe205bdd1321f95f8f3c35d243ea7cb22af8fbe1 <a875c023155ea92b75d6323977003e64d92ae7fc; version=fe205bdd1321f95f8f3c35d243ea7cb22af8fbe1 <a98b7761f697e590ed5d610d87fa12be66f23419; version=fe205bdd1321f95f8f3c35d243ea7cb22af8fbe1 <a9c95f787b88b29165563fd97761032db77116e7; version=fe205bdd1321f95f8f3c35d243ea7cb22af8fbe1 <d1a211e5210d31da8f49fc0021bf7129b726468c; version=fe205bdd1321f95f8f3c35d243ea7cb22af8fbe1 <e6102b72edc4eb8c0858df00ba74b5ce579c8fa2

Published CVSS scores

5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
5.5CISA-ADPCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
4.4Oracle LinuxCVSS:3.1/AV:L/AC:L/PR:H/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-190Integer Overflow or Wraparound
T1499.004Application or System Exploitation

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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