Skip to main content

Linux Kernel EUVDEUVD-2026-59644

| CVE-2026-74451 HIGH
2026-08-15 Linux GHSA-hm75-jr86-gwf9
Buffer Overflow Linux Red Hat Suse
7.8
CVSS 3.1 · Vendor: Linux
Share

Severity by source

Vendor (Linux) PRIMARY
7.8 HIGH
AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
vuln.today AI
7.8 HIGH

Local driver vulnerability requiring low-privilege access to GPU device nodes; hardware constraint doesn't reduce CVSS base metrics.

3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
4.0 AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
SUSE
HIGH
qualitative
Red Hat
5.5 MEDIUM
qualitative

Primary rating from Vendor (Linux).

CVSS VectorVendor: Linux

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

5
Analysis Generated
Aug 17, 2026 - 11:30 vuln.today
CVSS changed
Aug 17, 2026 - 06:22 NVD
7.8 (HIGH)
Patch available
Aug 15, 2026 - 13:04 EUVD
CVE Published
Aug 15, 2026 - 12:26 cve.org
HIGH 7.8
CVE Published
Aug 15, 2026 - 12:26 cve.org
UNKNOWN (no severity yet)

DescriptionCVE.org

In the Linux kernel, the following vulnerability has been resolved:

drm/panthor: validate firmware interface structure sizes

iface_fw_to_cpu_addr() only checks that the firmware-provided MCU virtual address points inside the shared section. The returned pointer is later used as a full firmware interface structure, so accepting an address near the end of the shared section can still lead to out-of-bounds accesses.

Pass the expected object size to iface_fw_to_cpu_addr() and reject ranges that do not fit entirely in the shared section.

AnalysisAI

Out-of-bounds memory access in the Linux kernel's drm/panthor driver (ARM Mali Valhall GPU) allows a local authenticated attacker to read or corrupt kernel memory by supplying a crafted MCU virtual address near the end of the firmware shared memory section. The underlying flaw is in iface_fw_to_cpu_addr(), which validated only that a firmware-provided address falls within the shared section - not that the full firmware interface structure fits within it - enabling subsequent structure-level accesses to reach past the section boundary. …

Unlock full vulnerability intelligence

  • Risk assessment & exploitation conditions
  • Attack chain visualization
  • Remediation with exact patch versions
  • Threat intelligence from 22 sources
  • Personal watchlist & email alerts
Continue with Google Continue with GitHub

Free forever · No credit card required

Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
Gain local shell on Mali Valhall device
Delivery
Access DRM/GPU device node
Exploit
Craft MCU address near section boundary
Execution
Pass boundary check in iface_fw_to_cpu_addr()
Persist
Trigger out-of-bounds kernel memory access
Impact
Escalate to root privileges
Sign in to reveal

Vulnerability AssessmentAI

Exploitation Exploitation requires: (1) local authenticated access with at least low-privilege user permissions on the target system (PR:L per CVSS); (2) the target system must be equipped with an ARM Mali Valhall-generation GPU and must have the drm/panthor kernel module loaded and active - this is a hardware-specific prerequisite not met by x86 servers, standard cloud VMs, or systems with non-Valhall GPUs; (3) the attacker must be able to reach the firmware interface interaction path within the driver, which depends on access to DRM device nodes. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The CVSS 3.1 score of 7.8 (AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H) reflects a local privilege escalation scenario: an attacker with low-privilege local access on an affected system could potentially achieve full kernel memory read/write, translating to complete host compromise. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario A local user with a shell on an ARM-based device running an affected Linux kernel (e.g., a developer board or Chromebook with Mali Valhall GPU) crafts a firmware-side MCU virtual address that points near the very end of the GPU's shared firmware memory section. When the kernel's drm/panthor driver passes this address to iface_fw_to_cpu_addr() and then dereferences the returned pointer as a full firmware interface structure, memory reads and writes extend past the shared section boundary into adjacent kernel memory. …
Remediation The primary remediation is upgrading to a patched stable kernel release: Linux 6.12.103, Linux 7.1.8, Linux 6.18.44, or Linux 7.2-rc6 or later. … Detailed patch versions, workarounds, and compensating controls in full report.
Sign in to read full assessment

Recommended ActionAI

Within 24 hours, identify all Linux systems running kernel versions 6.11.x through 6.18.x with the ARM Mali Valhall GPU driver subsystem (drm/panthor), prioritizing production environments. …

Sign in for detailed remediation steps and compensating controls.

Threat intelligence, references, and detailed analysis are available after sign-in.

Same technique Buffer Overflow

View all
CVE-2017-7269 CRITICAL POC
9.8
CVE-2015-5119 CRITICAL POC
9.8
CVE-2015-3113 CRITICAL POC
9.8
CVE-2011-2462 CRITICAL POC
9.8
CVE-2020-0796 CRITICAL POC
10.0
CVE-2019-11043 CRITICAL POC
9.8
CVE-2009-0927 HIGH POC
8.8
CVE-2012-1889 HIGH POC
8.8

Vendor StatusVendor

SUSE

Severity: Important
Product Status
SUSE Linux Enterprise Desktop 15 SP7 Affected
SUSE Linux Enterprise Desktop 15 SP7 Affected
SUSE Linux Enterprise High Availability Extension 15 SP7 Affected
SUSE Linux Enterprise High Availability Extension 15 SP7 Affected
SUSE Linux Enterprise High Availability Extension 16.0 Affected

Share

EUVD-2026-59644 vulnerability details – vuln.today
Back

This site uses cookies essential for authentication and security. No tracking or analytics cookies are used. Privacy Policy