CVE-2022-25265

Description

A vulnerability was found in the Linux kernel when certain binary files have the exec-all attribute with gcc. This issue can cause the execution of bytes located in the non-executable regions of a file.

Statement

This vulnerability only applies when running 32 bits executables in an x86_64 kernel. The developer would need to intentionally make its app vulnerable by:

  1. Compiling it to 32 bits
  2. Remove the PT_GNU_STACK ELF field by compiling with an old GCC, using some tricky linker flag, or editing the ELF binary.

64 bits executables are immune to this. RHEL 9 does not support 32 bit binaries so there would be no fixes for RHEL 9.

Mitigation

Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.

Common Vulnerability Scoring System (CVSS) Score Details

Info alert:Important note

CVSS scores for open source components depend on vendor-specific factors (e.g. version or build chain). Therefore, Red Hat's score and impact rating can be different from NVD and other vendors. Red Hat remains the authoritative CVE Naming Authority (CNA) source for its products and services (see Red Hat classifications).

CVSS v3 Score Breakdown

Red HatNVDcve.org
Base Score7.87.8N/A
Attack VectorLocalLocalN/A
Attack ComplexityLowLowN/A
Privileges RequiredLowLowN/A
User InteractionNoneNoneN/A
ScopeUnchangedUnchangedN/A
ConfidentialityHighHighN/A
Integrity ImpactHighHighN/A
Availability ImpactHighHighN/A

Vector

Red Hat: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

NVD: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Understanding the Weakness (CWE)

CWE-281

Confidentiality,Integrity

Technical Impact: Read Application Data; Modify Application Data

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