CVE-2026-72213Public exploit

Local denial of service via cgroup underflow

Published Aug 15, 2026 · Updated Aug 15, 2026

Integer underflow in Linux kernel hugetlb cgroup accounting allows local users to cause denial of service through reserved huge-page mappings. alloc_hugetlb_folio overwrites the reserved-charge cgroup pointer with the non-reserved pointer, so free_huge_folio later decrements an uncharged page counter. Local access and hugetlb cgroup use are required, and the resulting counter underflow can destabilize or crash the host.

CVSS severity7.1
High
EPSS probability0.16%
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 Linux kernel hugetlb cgroup accounting allows local users to cause denial of service through reserved huge-page mappings. alloc_hugetlb_folio overwrites the reserved-charge cgroup pointer with the non-reserved pointer, so free_huge_folio later decrements an uncharged page counter. Local access and hugetlb cgroup use are required, and the resulting counter underflow can destabilize or crash the host.

The record

CVE
CVE-2026-72213
Published
Aug 15, 2026
Updated
Aug 15, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-191, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 15, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 15, 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=08cf9faf7558020aed6a0da5810b824b07139dfa <15807d0ddde37407af72859426b654f3d1972b00
  2. Affected versionversion=08cf9faf7558020aed6a0da5810b824b07139dfa <1697d253f51cf5e3825a3423ff49e128a3502ab2
  3. Affected versionversion=08cf9faf7558020aed6a0da5810b824b07139dfa <5c32ae4a91fb5f4941328e0c1720a7fa4189c3bd
  4. Affected versionversion=08cf9faf7558020aed6a0da5810b824b07139dfa <b785f2bd9496facedc0a031be09cddcd1d3c84d3
  5. Affected versionversion=5.7

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=08cf9faf7558020aed6a0da5810b824b07139dfa <15807d0ddde37407af72859426b654f3d1972b00; version=08cf9faf7558020aed6a0da5810b824b07139dfa <1697d253f51cf5e3825a3423ff49e128a3502ab2; version=08cf9faf7558020aed6a0da5810b824b07139dfa <5c32ae4a91fb5f4941328e0c1720a7fa4189c3bd; version=08cf9faf7558020aed6a0da5810b824b07139dfa <b785f2bd9496facedc0a031be09cddcd1d3c84d3; version=5.7

Published CVSS scores

7.1UbuntuCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
5.5Red HatCVSS: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

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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 exploitPublished

Weakness, pattern, technique

CWE-191Integer Underflow (Wrap or Wraparound)
T1499Endpoint Denial of Service

Public exploit references

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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