CVE-2021-29256 is a use-after-free vulnerability in Arm Mali GPU kernel drivers (Bifrost, Valhall, Midgard) that allows an unprivileged user to gain access to freed memory. This high-severity flaw (CVSS 8.8) has a low attack complexity and can lead to information disclosure or root privilege escalation. It is actively exploited in the wild, as confirmed by its inclusion in CISA's KEV catalog and mentions in community discussions, despite no public exploit code being readily available on platforms like Metasploit or ExploitDB. Media coverage highlights its active exploitation and the urgency for patching.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
>= r16p0, < r30p0CPE matchmatch criteria | cpe:2.3:a:arm:bifrost_gpu_kernel_driver:*:*:*:*:*:*:*:* | ||
>= r28p0, < r31p0CPE matchmatch criteria | cpe:2.3:a:arm:midgard_gpu_kernel_driver:*:*:*:*:*:*:*:* | ||
>= r19p0, < r30p0CPE matchmatch criteria | cpe:2.3:a:arm:valhall_gpu_kernel_driver:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.
The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.