CVE-2024-53097

MTE tag fault via stale KASAN pointer tag

Published Nov 25, 2024 · Updated May 23, 2026

A KASAN tag-handling flaw in the Linux kernel allows local users to trigger a false MTE tag fault through memory reallocation. The __do_krealloc path zeroes spare memory with memset without first resetting the KASAN pointer tag, so the pointer and allocation tags differ. Exploitation requires an arm64 MTE system with tag-based KASAN; panic-on-warning can crash the kernel, while normal handling disables MTE checking after the first report.

CVSS severity5.5
Medium
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

A KASAN tag-handling flaw in the Linux kernel allows local users to trigger a false MTE tag fault through memory reallocation. The __do_krealloc path zeroes spare memory with memset without first resetting the KASAN pointer tag, so the pointer and allocation tags differ. Exploitation requires an arm64 MTE system with tag-based KASAN; panic-on-warning can crash the kernel, while normal handling disables MTE checking after the first report.

The record

CVE
CVE-2024-53097
Published
Nov 25, 2024
Updated
May 23, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Nov 25, 2024CVE publishedPublication date reported by the CVE source.
  2. May 23, 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=1a83a716ec233990e1fd5b6fbb1200ade63bf450 <704573851b51808b45dae2d62059d1d8189138a2
  2. Affected versionversion=3e9a65a38706866bf93e19f5b4936465188add10 <3dfb40da84f26dd35dd9bbaf626a2424565b8406
  3. Affected versionversion=44f79667fefd52945a44d2a57a2cd3c554d7f4e0 <d43f1430d47c22a0727c05b6f156ed25fecdfeb4
  4. Affected versionversion=5.10.227 <5.10.230
  5. Affected versionversion=5.15.168 <5.15.173
  6. Affected versionversion=6.10.14 <6.11
  7. Affected versionversion=6.1.113 <6.1.118
  8. Affected versionversion=6.11.3 <6.11.9
  9. Affected versionversion=6.6.55 <6.6.62
  10. Affected versionversion=73388659ef0eea51747350530afdeadf8809ce9c
  11. Affected versionversion=a543785856249a5ba8c20468098601c0c33b1224 <d02492863023431c31f85d570f718433c22b9311
  12. Affected versionversion=c383263ee82a01a5a9bc1a466025ccde39a38cae <8ebee7565effdeae6085458f8f8463363120a871
  13. Affected versionversion=e3a9fc1520a6606c6121aca8d6679c6b93de7fd8 <71548fada7ee0eb50cc6ccda82dff010c745f92c
  14. Affected versionversion=f8767d10bcbc2529540eb906906c0058e15cd918 <486aeb5f1855c75dd810c25036134961bd2a6722

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=1a83a716ec233990e1fd5b6fbb1200ade63bf450 <704573851b51808b45dae2d62059d1d8189138a2; version=3e9a65a38706866bf93e19f5b4936465188add10 <3dfb40da84f26dd35dd9bbaf626a2424565b8406; version=44f79667fefd52945a44d2a57a2cd3c554d7f4e0 <d43f1430d47c22a0727c05b6f156ed25fecdfeb4; version=5.10.227 <5.10.230; version=5.15.168 <5.15.173; version=6.10.14 <6.11; version=6.1.113 <6.1.118; version=6.11.3 <6.11.9; version=6.6.55 <6.6.62; version=73388659ef0eea51747350530afdeadf8809ce9c; version=a543785856249a5ba8c20468098601c0c33b1224 <d02492863023431c31f85d570f718433c22b9311; version=c383263ee82a01a5a9bc1a466025ccde39a38cae <8ebee7565effdeae6085458f8f8463363120a871; version=e3a9fc1520a6606c6121aca8d6679c6b93de7fd8 <71548fada7ee0eb50cc6ccda82dff010c745f92c; version=f8767d10bcbc2529540eb906906c0058e15cd918 <486aeb5f1855c75dd810c25036134961bd2a6722

Published CVSS scores

5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
5.5CanonicalCVSS: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 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

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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