SB20240731135 - Improper neutralization of directives in statically saved code (\'static code injection\') in Linux kernel fs 

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Main Vulnerability Database SB20240731135

SB20240731135 - Improper neutralization of directives in statically saved code (\'static code injection\') in Linux kernel fs

Published: July 31, 2024 Updated: May 12, 2025

Security Bulletin ID SB20240731135
Severity
Low
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Local access
Highest impact Denial of service

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 security vulnerability.


1) Improper neutralization of directives in statically saved code (\'static code injection\') (CVE-ID: CVE-2024-42084)

The vulnerability allows a local user to perform a denial of service (DoS) attack.

In the Linux kernel, the following vulnerability has been resolved: ftruncate: pass a signed offset The old ftruncate() syscall, using the 32-bit off_t misses a sign extension when called in compat mode on 64-bit architectures. As a result, passing a negative length accidentally succeeds in truncating to file size between 2GiB and 4GiB. Changing the type of the compat syscall to the signed compat_off_t changes the behavior so it instead returns -EINVAL. The native entry point, the truncate() syscall and the corresponding loff_t based variants are all correct already and do not suffer from this mistake.


Remediation

Install update from vendor's website.

References