Arbitrary Code Execution Affecting torvalds/linux package, versions [5.6,5.10.273)[5.11,5.15.224)[5.16,6.1.191)[6.2,6.6.72)[6.7,6.12.10)


Severity

Recommended
0.0
high
0
10

CVSS assessment by Snyk's Security Team. Learn more

Threat Intelligence

EPSS
0.2% (11th percentile)

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  • Snyk IDSNYK-UNMANAGED-TORVALDSLINUX-20698566
  • published10 Oct 2026
  • disclosed21 Jan 2025
  • creditUnknown

Introduced: 21 Jan 2025

CVE-2025-21656  (opens in a new tab)
CWE-20  (opens in a new tab)

How to fix?

Upgrade torvalds/linux to version 5.10.273, 5.15.224, 6.1.191, 6.6.72, 6.12.10 or higher.

Overview

Affected versions of this package are vulnerable to Arbitrary Code Execution via the drivetemp process in the hardware monitoring subsystem when handling SCSI errors. An attacker can cause the system to report uninitialized or garbage data to userspace by triggering SCSI errors, such as disconnecting a disk drive, potentially leading to unintended code execution or system instability.

Note: The Linux kernel project assigns a CVE to every bug fix it ships, whether or not the bug has been shown to be exploitable. This advisory was generated from that process and has not been individually assessed for exploitability. See the kernel's CVE process documentation: https://github.com/torvalds/linux/blob/master/Documentation/process/cve.rst

CVSS Base Scores

version 4.0
version 3.1