CVE-2026-90268
Linux · Kernel
A flaw in the Linux kernel SCSI disk driver handling of sd_probe failures leads to improper resource cleanup, potentially resulting in memory leaks or system instability.
Executive summary
A critical vulnerability in the Linux kernel SCSI disk driver allows for improper error handling during probe operations, posing a risk of system instability and potential memory corruption.
Vulnerability
This vulnerability is an improper error handling issue within the sd_probe function of the SCSI disk driver. An unauthenticated attacker could potentially trigger this flaw if they have the ability to influence SCSI device probing, leading to a system state where resources are not correctly released.
Business impact
The vulnerability carries a CVSS score of 8.1, indicating a high level of severity. Successful exploitation could lead to system crashes, memory exhaustion, or potential denial of service conditions, which would directly impact business continuity and operational availability for affected Linux environments.
Remediation
Immediate Action: Update the Linux kernel to version 7.2.6 or later, which contains the necessary patches to resolve the error handling flaw in the SCSI disk driver.
Proactive Monitoring: Monitor system logs for kernel panic events or unexpected SCSI device initialization errors that may indicate exploitation attempts or instability.
Compensating Controls: Ensure that kernel hardening features are enabled and restrict physical or logical access to storage controller interfaces to prevent unauthorized triggering of device probe routines.
Exploitation status
Public Exploit Available: Unknown.
Analyst recommendation
Given the potential for system-wide instability and the high severity score assigned to this kernel-level flaw, organizations should prioritize testing and deploying the patched kernel version. Administrators must ensure that the update to 7.2.6 is integrated into their standard patch management cycle immediately to maintain system integrity and stability.
More Linux CVEs all →
History
CVE Brief tracked this CVE 4 days before it had a CVSS score.
- Disclosed CVE record published
- Collected by CVE Brief No CVSS score yet; tracked as early warning
- CVSS score assigned 8.1 (3.1) from cvelistV5
- Analyst report written