CVE-2024-26710

PowerPC KASAN build failure via stack doubling

Published Apr 3, 2024 · Updated May 11, 2026

Resource allocation flaw in affected Linux kernel versions allows attackers to cause build failures via PowerPC KASAN configurations. The thread-size macro doubles an existing 32KB stack to 64KB when KASAN is enabled, producing an out-of-range operand in arch/powerpc/kernel/switch.S. The condition requires a PowerPC kernel build that already uses a 32KB stack and enables KASAN; the result is a compiler failure rather than interruption of a running kernel.

CVSS severity5.5
Medium
EPSS probability0.24%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Resource allocation flaw in affected Linux kernel versions allows attackers to cause build failures via PowerPC KASAN configurations. The thread-size macro doubles an existing 32KB stack to 64KB when KASAN is enabled, producing an out-of-range operand in arch/powerpc/kernel/switch.S. The condition requires a PowerPC kernel build that already uses a 32KB stack and enables KASAN; the result is a compiler failure rather than interruption of a running kernel.

The record

CVE
CVE-2024-26710
Published
Apr 3, 2024
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-770
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 3, 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=18f14afe281648e31ed35c9ad2fcb724c4838ad9 <f1acb109505d983779bbb7e20a1ee6244d2b5736
  2. Affected versionversion=58f396513cb1fa4ef91838c78698d458100cc27c <b29b16bd836a838b7690f80e37f8376414c74cbe
  3. Affected versionversion=6.1.75 <6.1.76
  4. Affected versionversion=6.6.14 <6.6.18
  5. Affected versionversion=6.7.2 <6.7.6
  6. Affected versionversion=9ccf64e763aca088b0d25c1274af42b1a6a45135 <f9a4c401bf4c5af3437ad221c0a5880a518068d4
  7. Affected versionversion=b38014874530d3776de75679315e8c1fe04aa89b <4cc31fa07445879a13750cb061bb8c2654975fcb

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=18f14afe281648e31ed35c9ad2fcb724c4838ad9 <f1acb109505d983779bbb7e20a1ee6244d2b5736; version=58f396513cb1fa4ef91838c78698d458100cc27c <b29b16bd836a838b7690f80e37f8376414c74cbe; version=6.1.75 <6.1.76; version=6.6.14 <6.6.18; version=6.7.2 <6.7.6; version=9ccf64e763aca088b0d25c1274af42b1a6a45135 <f9a4c401bf4c5af3437ad221c0a5880a518068d4; version=b38014874530d3776de75679315e8c1fe04aa89b <4cc31fa07445879a13750cb061bb8c2654975fcb

Published CVSS scores

5.5NIST NVDCVSS: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

CWE-770Allocation of Resources Without Limits or Throttling

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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