CVE-2026-68458
Description
A flaw was found in the Linux kernel's binder component. An error in calculating buffer boundaries during transaction processing causes a security context's length to be prematurely cleared, leading to an inflated buffer size. This allows data to be written into an unintended memory region, which could result in memory corruption. A local attacker could potentially leverage this to gain unauthorized access to sensitive information or escalate privileges.
Statement
This vulnerability is rated as Moderate severity due to the local access required and the potential for kernel memory corruption or privilege escalation through Binder IPC. Red Hat Enterprise Linux releases are not affected because the vulnerable code introduced in upstream kernels is not present in supported versions. Additionally, the Android Binder subsystem is not enabled in standard Red Hat Enterprise Linux kernel builds.
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 | 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 | High | N/A | High |
| Integrity Impact | High | 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:H/I:H/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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