Description
In fuse_backing_mmap of backing.c, there is a possible memory corruption due to a use after free. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.
Published: 2026-11-02
Score: 8.4 High
EPSS: n/a
KEV: No
Impact: Local Privilege Escalation
Action: Patch
AI Analysis

Impact

The flaw lies in the fuse_backing_mmap function within the kernel's backing.c file, where a use‑after‑free can trigger memory corruption. An attacker who can trigger the freed memory to be re‑used may be able to compromise local privilege without needing elevated execution rights.

Affected Systems

This issue affects devices running the Google Android operating system, specifically those that include the affected kernel common component. No explicit version range is provided in the advisory; the problem exists in any kernel build that has not yet been updated with the corresponding fix.

Risk and Exploitability

The exploit requires no user interaction and is limited to a local context, but once a local user gains elevated rights they can fully control the device. Although the EPSS score is not available and the vulnerability is not listed in the KEV catalog, the absence of a need for higher privileges makes it a high‑risk flaw for compromised or malicious local users. The CVSS score is not disclosed in the current data, thus the absolute severity cannot be quantified, but the described impact warrants immediate attention.

Generated by OpenCVE AI on November 2, 2026 at 22:09 UTC.

Remediation

No solution or workaround provided in the CVE record.

OpenCVE Recommended Actions

  • Apply the Android security update that contains the kernel patch fixing the use‑after‑free in fuse_backing_mmap, as announced in the 2026‑11‑01 security bulletin.
  • Reboot the device to ensure the updated kernel is active.
  • Continuously monitor the system for signs of privilege‑escalation activity and configure device policies to alert on unexpected root attempts.

Generated by OpenCVE AI on November 2, 2026 at 22:09 UTC.

Tracking

Sign in to view the affected projects.

Advisories

No advisories yet.

History

Mon, 02 Nov 2026 22:30:00 +0000

Type Values Removed Values Added
Title Memory Corruption in Android Kernel Fuse Backing Mmap Leading to Local Privilege Escalation
Weaknesses CWE-119

Mon, 02 Nov 2026 21:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-416
Metrics cvssV3_1

{'score': 8.4, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}


Mon, 02 Nov 2026 20:00:00 +0000

Type Values Removed Values Added
Description In fuse_backing_mmap of backing.c, there is a possible memory corruption due to a use after free. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.
References

Subscriptions

No data.

cve-icon MITRE

Status: PUBLISHED

Assigner: google_android

Published:

Updated: 2026-11-02T21:03:46.746Z

Reserved: 2026-07-02T05:57:41.545Z

Link: CVE-2026-58829

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-11-02T20:17:47.940

Modified: 2026-11-02T21:17:34.553

Link: CVE-2026-58829

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-11-02T22:15:17Z

Weaknesses
  • CWE-119

    Improper Restriction of Operations within the Bounds of a Memory Buffer

  • CWE-416

    Use After Free