CVE-2025-71238
Description
A flaw was found in the Linux kernel's qla2xxx block SCSI generic (bsg) interface. This vulnerability, a double free, occurs because certain vendor-specific handlers incorrectly call the bsg_job_done function on both successful and failed operation paths. A local user could exploit this to trigger memory corruption, leading to a kernel crash and a Denial of Service (DoS). There is also a theoretical risk of local privilege escalation due to the memory corruption.
Statement
A kernel double free can be triggered in the qla2xxx bsg interface because some vendor specific handlers called bsg_job_done on both success and failure paths. This can result in the same bsg job being completed and freed twice which leads to memory corruption and a kernel crash. The issue is not network reachable. Impact is denial of service and there is a theoretical risk of local privilege escalation because the flaw is a kernel memory corruption condition.
Mitigation
To mitigate this issue, prevent module qla2xxx from being loaded. Please see https://access.redhat.com/solutions/41278 for how to blacklist a kernel module to prevent it from loading automatically.
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 Hat | NVD | cve.org | |
|---|---|---|---|
| Base Score | 7.3 | 7.8 | N/A |
| Attack Vector | Local | Local | N/A |
| Attack Complexity | Low | Low | N/A |
| Privileges Required | None | Low | N/A |
| User Interaction | None | None | N/A |
| Scope | Unchanged | Unchanged | N/A |
| Confidentiality | Low | High | N/A |
| Integrity Impact | Low | High | N/A |
| Availability Impact | High | High | N/A |
Vector
Red Hat: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/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)
Integrity,Confidentiality
Technical Impact: Modify Application Data; Read Application Data
If a released resource is subsequently reused or reallocated, then an attempt to use the original resource might allow access to sensitive data that is associated with a different user or entity.
Other,Availability
Technical Impact: Other; DoS: Crash, Exit, or Restart
When a resource is released it might not be in an expected state, later attempts to access the resource may lead to resultant errors that may lead to a crash.
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