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CVE-2021-47013

kernel: net:emac/emac-mac: Fix a use after free in emac_mac_tx_buf_send

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Severity

Moderate

Red Hat Product Security

7

CVSS 3.1

Review impact separately from score.

Published · February 28, 2024

Updated · August 5, 2026

Description

A use-after-free flaw was found in the Linux kernel’s Qualcomm Gigabit Ethernet Media Access Controller (EMAC) driver in how a user triggers an error path in the emac_tx_fill_tpd function. This flaw allows a local user to crash or potentially escalate their privileges on the system.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CVSS 3.1 · 7
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

CWE-416 · Use After Free