CVE-2024-47745Public exploit

Local SELinux W^X bypass via unchecked remapping

Published Oct 21, 2024 · Updated Aug 5, 2026

Security policy bypass in Linux allows local users to remap writable file-backed pages as executable despite SELinux W^X enforcement. The remap_file_pages syscall handler invokes do_mmap directly without passing the effective protections through security_mmap_file. A process must first set READ_IMPLIES_EXEC and remap its own read-write pages; the result is an RWX mapping inside the caller's SELinux-confined context.

CVSS severity7.8
High
EPSS probability0.29%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Security policy bypass in Linux allows local users to remap writable file-backed pages as executable despite SELinux W^X enforcement. The remap_file_pages syscall handler invokes do_mmap directly without passing the effective protections through security_mmap_file. A process must first set READ_IMPLIES_EXEC and remap its own read-write pages; the result is an RWX mapping inside the caller's SELinux-confined context.

The record

CVE
CVE-2024-47745
Published
Oct 21, 2024
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-670, T1211
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 21, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=097f98edde717ce09f217d8a285fe357dcd29fd1
  2. Affected versionversion=3.16.59 <3.17
  3. Affected versionversion=4.0
  4. Affected versionversion=c8d78c1823f46519473949d33f0d1d33fe21ea16 <0f910dbf2f2a4a7820ba4bac7b280f7108aa05b1
  5. Affected versionversion=c8d78c1823f46519473949d33f0d1d33fe21ea16 <3393fddbfa947c8e1fdcc4509226905ffffd8b89
  6. Affected versionversion=c8d78c1823f46519473949d33f0d1d33fe21ea16 <49d3a4ad57c57227c3b0fd6cd4188b2a5ebd6178
  7. Affected versionversion=c8d78c1823f46519473949d33f0d1d33fe21ea16 <ce14f38d6ee9e88e37ec28427b4b93a7c33c70d3
  8. Affected versionversion=c8d78c1823f46519473949d33f0d1d33fe21ea16 <ea7e2d5e49c05e5db1922387b09ca74aa40f46e2

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=097f98edde717ce09f217d8a285fe357dcd29fd1; version=3.16.59 <3.17; version=4.0; version=c8d78c1823f46519473949d33f0d1d33fe21ea16 <0f910dbf2f2a4a7820ba4bac7b280f7108aa05b1; version=c8d78c1823f46519473949d33f0d1d33fe21ea16 <3393fddbfa947c8e1fdcc4509226905ffffd8b89; version=c8d78c1823f46519473949d33f0d1d33fe21ea16 <49d3a4ad57c57227c3b0fd6cd4188b2a5ebd6178; version=c8d78c1823f46519473949d33f0d1d33fe21ea16 <ce14f38d6ee9e88e37ec28427b4b93a7c33c70d3; version=c8d78c1823f46519473949d33f0d1d33fe21ea16 <ea7e2d5e49c05e5db1922387b09ca74aa40f46e2

Published CVSS scores

7.8UbuntuCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.8Amazon LinuxCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/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 exploitPublished

Weakness, pattern, technique

CWE-670Always-Incorrect Control Flow Implementation
T1211Exploitation for Defense Evasion

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

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