9

CVE-2021-29256

Warning

. The Arm Mali GPU kernel driver allows an unprivileged user to achieve access to freed memory, leading to information disclosure or root privilege escalation. This affects Bifrost r16p0 through r29p0 before r30p0, Valhall r19p0 through r29p0 before r30p0, and Midgard r28p0 through r30p0.

Data is provided by the National Vulnerability Database (NVD)
Arm ≫ Bifrost Gpu Kernel Driver Version >= r16p0 < r30p0
Arm ≫ Midgard Gpu Kernel Driver Version >= r28p0 < r31p0
Arm ≫ Valhall Gpu Kernel Driver Version >= r19p0 < r30p0

07.07.2023: CISA Known Exploited Vulnerabilities (KEV) Catalog

Arm Mali GPU Kernel Driver Use-After-Free Vulnerability

Vulnerability

Arm Mali GPU Kernel Driver contains a use-after-free vulnerability that may allow a non-privileged user to gain root privilege and/or disclose information.

Description

Apply updates per vendor instructions or discontinue use of the product if updates are unavailable.

Required actions
EPSS Metriken
Type Source Score Percentile
EPSS FIRST.org 0.98% 0.757
CVSS Metriken
Source Base Score Exploit Score Impact Score Vector string
nvd@nist.gov 8.8 2.8 5.9
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
nvd@nist.gov 9 8 10
AV:N/AC:L/Au:S/C:C/I:C/A:C
134c704f-9b21-4f2e-91b3-4a467353bcc0 8.8 2.8 5.9
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE-416 Use After Free

The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.