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Linux Kernel EUVDEUVD-2026-70341

| CVE-2026-80737 HIGH
2026-09-03 Linux GHSA-j4vm-79j3-8jfc
Linux Suse
7.8
CVSS 3.1 · Vendor: Linux
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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
7.0 HIGH

Race condition requires precise timing during teardown, warranting AC:H; all other metrics align with vendor assessment.

3.1 AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
4.0 AV:L/AC:H/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
SUSE
7.0 HIGH
AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Primary rating from Vendor (Linux).

CVSS VectorVendor: Linux

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

6
Metadata Corrected
Sep 04, 2026 - 05:40 vuln.today
tag: Information Disclosure removed
Analysis Generated
Sep 04, 2026 - 05:27 vuln.today
CVSS changed
Sep 04, 2026 - 05:22 NVD
7.8 (HIGH)
Patch available
Sep 03, 2026 - 10:16 EUVD
CVE Published
Sep 03, 2026 - 08:21 cve.org
UNKNOWN (no severity yet)
CVE Published
Sep 03, 2026 - 08:21 cve.org
HIGH 7.8

DescriptionCVE.org

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

serial: amba-pl011: synchronize DMA teardown

dmaengine_terminate_all() does not wait for a running callback, so the TX callback can still touch the TX buffer after it is freed. The RX poll timer reads the RX buffers without the port lock.

Switch to dmaengine_terminate_sync() and delete the RX timer before freeing the buffers.

AnalysisAI

Use-after-free and race condition in the Linux kernel's amba-pl011 ARM UART serial driver during DMA teardown allows a local attacker to corrupt kernel memory, potentially gaining arbitrary code execution or causing a denial of service. The flaw exists because dmaengine_terminate_all() returns without waiting for in-flight callbacks to complete, enabling the TX DMA callback to dereference already-freed TX buffer memory; a parallel race exists in the RX path where the poll timer accesses RX buffers without holding the port lock. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

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Vulnerability AssessmentAI

Exploitation Exploitation requires: (1) local authenticated access on the target system (PR:L per CVSS), (2) the target system must use hardware with an amba-pl011 ARM PrimeCell UART controller (common on ARM SoCs such as Raspberry Pi hardware), (3) DMA mode must be enabled for that serial port - this is a non-default configuration on many systems but is standard on some ARM embedded platforms when DMA channels are assigned in device tree, and (4) the attacker must win a race condition between triggering DMA activity on the serial port and initiating driver teardown. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The vendor-assigned CVSS 7.8 (AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H) reflects local privilege escalation potential from kernel memory corruption, which is plausible for a use-after-free. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario Full exploit scenario with step-by-step reproduction available after sign-in.
Remediation Upgrade to a patched Linux kernel stable release: 5.10.267, 5.15.218, 6.1.185, 6.6.154, 6.12.106, 6.18.45, 7.1.9, or 7.2 as appropriate for your branch. … Detailed patch versions, workarounds, and compensating controls in full report.
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Recommended ActionAI

Within 24 hours, identify all ARM-based Linux systems running the amba-pl011 UART driver with DMA support; consult your Linux distribution's security advisories for patch availability (patches are available across multiple stable kernel branches). …

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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

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EUVD-2026-70341 vulnerability details – vuln.today
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