CVE-2021-47009

MEDIUM

Linux Kernel - Use-After-Free in Trusted Keys TPM1 Component

Title source: llm
STIX 2.1

Description

In the Linux kernel, the following vulnerability has been resolved: KEYS: trusted: Fix memory leak on object td Two error return paths are neglecting to free allocated object td, causing a memory leak. Fix this by returning via the error return path that securely kfree's td. Fixes clang scan-build warning: security/keys/trusted-keys/trusted_tpm1.c:496:10: warning: Potential memory leak [unix.Malloc]

References (4)

Core 4

Scores

CVSS v3 5.5
EPSS 0.0025
EPSS Percentile 15.6%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-401
Status published
Products (14)
Linux/Linux < 5.12
Linux/Linux 5.10.20 - 5.10.38
Linux/Linux 5.10.38 - 5.10.*
Linux/Linux 5.11.22 - 5.11.*
Linux/Linux 5.11.3 - 5.11.22
Linux/Linux 5.12
Linux/Linux 5.12.5 - 5.12.*
Linux/Linux 5.13
Linux/Linux 5df16caada3fba3b21cb09b85cdedf99507f4ec1 - 3e24fbd37e72e8a67b74991970fecc82d14f57af
Linux/Linux 5df16caada3fba3b21cb09b85cdedf99507f4ec1 - 83a775d5f9bfda95b1c295f95a3a041a40c7f321
... and 4 more
Published Feb 28, 2024
Tracked Since Feb 18, 2026