CVE-2024-26688

System crash via invalid hugetlbfs page size

Published Apr 3, 2024 · Updated May 11, 2026

NULL pointer dereference in the Linux kernel allows local users to crash the system by supplying an invalid page size while creating hugetlbfs. hugetlbfs_parse_param() overwrites ctx->hstate with NULL after rejecting the page size, and hugetlbfs_fill_super() later passes that pointer to huge_page_size(). Reaching the failing filesystem-creation path requires local access with CAP_SYS_ADMIN, and the resulting kernel Oops interrupts the host.

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

NULL pointer dereference in the Linux kernel allows local users to crash the system by supplying an invalid page size while creating hugetlbfs. hugetlbfs_parse_param() overwrites ctx->hstate with NULL after rejecting the page size, and hugetlbfs_fill_super() later passes that pointer to huge_page_size(). Reaching the failing filesystem-creation path requires local access with CAP_SYS_ADMIN, and the resulting kernel Oops interrupts the host.

The record

CVE
CVE-2024-26688
Published
Apr 3, 2024
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-476, T1499.004
Attack vector
local
Privileges
admin

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=32021982a324dce93b4ae00c06213bf45fb319c8 <13c5a9fb07105557a1fa9efdb4f23d7ef30b7274
  2. Affected versionversion=32021982a324dce93b4ae00c06213bf45fb319c8 <1dde8ef4b7a749ae1bc73617c91775631d167557
  3. Affected versionversion=32021982a324dce93b4ae00c06213bf45fb319c8 <22850c9950a4e43a67299755d11498f3292d02ff
  4. Affected versionversion=32021982a324dce93b4ae00c06213bf45fb319c8 <2e2c07104b4904aed1389a59b25799b95a85b5b9
  5. Affected versionversion=32021982a324dce93b4ae00c06213bf45fb319c8 <79d72c68c58784a3e1cd2378669d51bfd0cb7498
  6. Affected versionversion=32021982a324dce93b4ae00c06213bf45fb319c8 <80d852299987a8037be145a94f41874228f1a773
  7. Affected versionversion=32021982a324dce93b4ae00c06213bf45fb319c8 <ec78418801ef7b0c22cd6a30145ec480dd48db39
  8. Affected versionversion=5.1

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

The Linux Kernel Organization · Linuxversion=32021982a324dce93b4ae00c06213bf45fb319c8 <13c5a9fb07105557a1fa9efdb4f23d7ef30b7274; version=32021982a324dce93b4ae00c06213bf45fb319c8 <1dde8ef4b7a749ae1bc73617c91775631d167557; version=32021982a324dce93b4ae00c06213bf45fb319c8 <22850c9950a4e43a67299755d11498f3292d02ff; version=32021982a324dce93b4ae00c06213bf45fb319c8 <2e2c07104b4904aed1389a59b25799b95a85b5b9; version=32021982a324dce93b4ae00c06213bf45fb319c8 <79d72c68c58784a3e1cd2378669d51bfd0cb7498; version=32021982a324dce93b4ae00c06213bf45fb319c8 <80d852299987a8037be145a94f41874228f1a773; version=32021982a324dce93b4ae00c06213bf45fb319c8 <ec78418801ef7b0c22cd6a30145ec480dd48db39; version=5.1

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

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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
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-476NULL Pointer Dereference
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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