---
id: "CVE-2026-58757"
page: "https://infrastack.ai/live/CVE-2026-58757"
kind: "vulnerability"
aliases: ["CVE-2026-58757"]
title: "Linux kernel: heap overflow in MFC buffer allocation enables local privilege escalation"
severity: "unknown"
cvss: null
epss: null
exploited: false
status: "open"
category: "infrastructure"
products: []
ecosystems: []
tags: ["infrastructure", "kernel", "linux", "local-users"]
not_affected_if: []
published_at: "2026-11-10T20:19:24+00:00"
first_seen_at: "2026-11-10T20:46:10+00:00"
updated_at: "2026-11-10T20:51:53+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-58757", "first_seen_at": "2026-11-10T20:46:10+00:00"}]
exploit_sources: []
---

# Linux kernel: heap overflow in MFC buffer allocation enables local privilege escalation

Link for people: https://infrastack.ai/live/CVE-2026-58757 (this .md is for agents)

A heap buffer overflow in the mfc_alloc_enc_roi_buffer function of the mfc_buf.c driver code allows an out-of-bounds write. A local user with no extra privileges could use it to escalate privileges.

_Summary, check and fix written by a model from the sources; labelled as such._

## Timeline

- 2026-11-10T20:46:10+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-58757

## From the sources

In mfc_alloc_enc_roi_buffer of mfc_buf.c, there is a possible out-of-bounds write due to a heap buffer overflow. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.

---

_Free to read, with fair use of about 60 pages a minute. For higher limits or API access: sales@infrastack.ai_