CVE-2026-99156
Description
A flaw was found in the SCSI tape driver in the Linux kernel. A local user can trigger a race condition between device removal and open operations, causing the kernel to access memory after it has been freed. This use-after-free vulnerability primarily results in a Denial of Service (DoS) by causing a system crash, and could potentially allow privilege escalation.
Statement
This vulnerability is rated as Moderate severity because exploitation requires local access, precise timing during device removal, and access permissions to tape device nodes. In standard Red Hat Enterprise Linux deployments, SCSI tape drives are infrequently used, and device nodes are restricted from unprivileged users by default. Consequently, the likelihood of a local attacker triggering this race condition under typical operational conditions is low.
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).
The following CVSS metrics and score provided are preliminary and subject to review.
CVSS v3 Score Breakdown
| Red Hat | NVD | cve.org | |
|---|---|---|---|
| Base Score | 4.7 | N/A | 7.8 |
| Attack Vector | Local | N/A | Local |
| Attack Complexity | High | N/A | Low |
| Privileges Required | Low | N/A | Low |
| User Interaction | None | N/A | None |
| Scope | Unchanged | N/A | Unchanged |
| Confidentiality | None | N/A | High |
| Integrity Impact | None | N/A | High |
| Availability Impact | High | N/A | High |
Vector
Red Hat: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
cve.org: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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