---
id: CVE-2026-45893
title: 'apparmor: Fix & Optimize table creation from possibly unaligned memory'
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  apparmor: Fix & Optimize table creation from possibly unaligned memory

  Source blob may come from userspace and might be unaligned.
  Try to optize the copying process by…
severity: none
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= e6e8bf418850d7958311a96ccfb594f2bcc8313e <
    1fbc4b24c7443ffd501609be74d9856fb940d703
  - >-
    Linux >= e6e8bf418850d7958311a96ccfb594f2bcc8313e <
    47e351dfef60ab0e3285133556e1a9c7f646a969
  - >-
    Linux >= e6e8bf418850d7958311a96ccfb594f2bcc8313e <
    e027999049c493fb728ead5a90db76942181a935
  - >-
    Linux >= e6e8bf418850d7958311a96ccfb594f2bcc8313e <
    226c3b10aab23f73b03c47e7773107de56ba3a4e
  - >-
    Linux >= e6e8bf418850d7958311a96ccfb594f2bcc8313e <
    6fc367bfd4c8886e6b1742aabbd1c0bdc310db3a
  - Linux 4.11
published: '2026-05-27'
updated: '2026-10-21'
sourceUpdated: '2026-10-21T12:40:55.401Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-45893'
references:
  - url: 'https://git.kernel.org/stable/c/1fbc4b24c7443ffd501609be74d9856fb940d703'
  - url: 'https://git.kernel.org/stable/c/47e351dfef60ab0e3285133556e1a9c7f646a969'
  - url: 'https://git.kernel.org/stable/c/e027999049c493fb728ead5a90db76942181a935'
  - url: 'https://git.kernel.org/stable/c/226c3b10aab23f73b03c47e7773107de56ba3a4e'
  - url: 'https://git.kernel.org/stable/c/6fc367bfd4c8886e6b1742aabbd1c0bdc310db3a'
tags:
  - cve.org
epss: 0.00126
epssPercentile: 0.02052
ingestedAt: '2026-10-21T12:48:53.636Z'
---

## Overview

In the Linux kernel, the following vulnerability has been resolved:

apparmor: Fix & Optimize table creation from possibly unaligned memory

Source blob may come from userspace and might be unaligned.
Try to optize the copying process by avoiding unaligned memory accesses.

- Added Fixes tag
- Added "Fix &" to description as this doesn't just optimize but fixes
        a potential unaligned memory access
[jj: remove duplicate word "convert" in comment trigger checkpatch warning]

## Affected

- `Linux >= e6e8bf418850d7958311a96ccfb594f2bcc8313e < 1fbc4b24c7443ffd501609be74d9856fb940d703`
- `Linux >= e6e8bf418850d7958311a96ccfb594f2bcc8313e < 47e351dfef60ab0e3285133556e1a9c7f646a969`
- `Linux >= e6e8bf418850d7958311a96ccfb594f2bcc8313e < e027999049c493fb728ead5a90db76942181a935`
- `Linux >= e6e8bf418850d7958311a96ccfb594f2bcc8313e < 226c3b10aab23f73b03c47e7773107de56ba3a4e`
- `Linux >= e6e8bf418850d7958311a96ccfb594f2bcc8313e < 6fc367bfd4c8886e6b1742aabbd1c0bdc310db3a`
- `Linux 4.11`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.