CVE-2026-23222

Kernel memory corruption via undersized scatterlist allocation

Published Feb 18, 2026 · Updated Feb 18, 2026

Heap buffer overflow in the Linux kernel OMAP crypto driver allows local users to corrupt kernel memory through forced-copy requests. omap_crypto_copy_sg_lists() allocates pointer-sized entries for scatterlist objects, leaving the buffer four times too small for the objects copied into it. Reachability requires the OMAP crypto driver and its OMAP_CRYPTO_FORCE_COPY path; the resulting overwrite corrupts adjacent kernel heap memory and can crash the kernel or alter privileged state.

CVSS severity7.8
High
EPSS probability0.13%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Heap buffer overflow in the Linux kernel OMAP crypto driver allows local users to corrupt kernel memory through forced-copy requests. omap_crypto_copy_sg_lists() allocates pointer-sized entries for scatterlist objects, leaving the buffer four times too small for the objects copied into it. Reachability requires the OMAP crypto driver and its OMAP_CRYPTO_FORCE_COPY path; the resulting overwrite corrupts adjacent kernel heap memory and can crash the kernel or alter privileged state.

The record

CVE
CVE-2026-23222
Published
Feb 18, 2026
Updated
Feb 18, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 18, 2026CVE publishedPublication date reported by the CVE source.
  2. Feb 18, 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=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <2ed27b5a1174351148c3adbfc0cd86d54072ba2e
  2. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <6edf8df4bd29f7bfd245b67b2c31d905f1cfc14b
  3. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <c184341920ed78b6466360ed7b45b8922586c38f
  4. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <d1836c628cb72734eb5f7dfd4c996a9c18bba3ad

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linux Kernelversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <2ed27b5a1174351148c3adbfc0cd86d54072ba2e; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <6edf8df4bd29f7bfd245b67b2c31d905f1cfc14b; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <c184341920ed78b6466360ed7b45b8922586c38f; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <d1836c628cb72734eb5f7dfd4c996a9c18bba3ad

Published CVSS scores

7.8kernel.orgCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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

T1068Exploitation for Privilege Escalation

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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