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Linux hisi_sas EUVDEUVD-2026-67529

| CVE-2026-80653 HIGH
2026-08-28 Linux GHSA-5rhh-7836-grvh
Information Disclosure Linux Red Hat Suse
High
Disputed · 8.4 Vendor: Linux
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Severity by source

Sources disagree (Low–High)
Vendor (Linux) PRIMARY
8.4 HIGH
AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
vuln.today AI
6.4 MEDIUM

Race requires root for rmmod and SAS reset, so PR:H; precise timing window makes AC:H; local-only hardware path confirms AV:L.

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

vuln.today treats the vendor’s rating as authoritative. A higher third-party CVSS (e.g. CISA-ADP) is shown for transparency but does not drive the headline severity.

CVSS VectorVendor: Linux

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

Lifecycle Timeline

5
Analysis Generated
Aug 29, 2026 - 07:45 vuln.today
CVSS changed
Aug 29, 2026 - 07:22 NVD
8.4 (HIGH)
Patch available
Aug 28, 2026 - 09:02 EUVD
CVE Published
Aug 28, 2026 - 06:49 cve.org
HIGH 8.4
CVE Published
Aug 28, 2026 - 06:49 cve.org
UNKNOWN (no severity yet)

DescriptionCVE.org

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

scsi: hisi_sas: Add slave_destroy interface for v3 hw

WARNING is triggered when executing link reset of remote PHY and rmmod SAS driver simultaneously. Following is the WARNING log:

WARNING: CPU: 61 PID: 21818 at drivers/base/core.c:1347 __device_links_no_driver+0xb4/0xc0 Call trace: __device_links_no_driver+0xb4/0xc0 device_links_driver_cleanup+0xb0/0xfc __device_release_driver+0x198/0x23c device_release_driver+0x38/0x50 bus_remove_device+0x130/0x140 device_del+0x184/0x434 __scsi_remove_device+0x118/0x150 scsi_remove_target+0x1bc/0x240 sas_rphy_remove+0x90/0x94 sas_rphy_delete+0x24/0x3c sas_destruct_devices+0x64/0xa0 [libsas] sas_revalidate_domain+0xe4/0x150 [libsas] process_one_work+0x1e0/0x46c worker_thread+0x15c/0x464 kthread+0x160/0x170 ret_from_fork+0x10/0x20 ---[ end trace 71e059eb58f85d4a ]---

During SAS phy up, link->status is set to DL_STATE_AVAILABLE in device_links_driver_bound, then this setting influences __device_links_no_driver() before driver rmmod and caused WARNING.

Add the slave_destroy interface to make sure link is removed after flush workque.

AnalysisAI

Race condition in the Linux kernel's hisi_sas v3 hardware driver triggers a kernel WARNING and potential memory corruption when SAS phy link reset and driver removal (rmmod) execute simultaneously. Specifically, during SAS phy bring-up, device_links_driver_bound sets the link status to DL_STATE_AVAILABLE, and a concurrent rmmod then causes __device_links_no_driver() to encounter an inconsistent device-link state. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

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Vulnerability AssessmentAI

Exploitation Exploitation requires: (1) local access to a physical or virtual machine equipped with HiSilicon SAS v3 hardware (Huawei Kunpeng server platforms); (2) root-level privileges or CAP_SYS_ADMIN capability to both execute rmmod on the hisi_sas driver and issue SAS phy link reset commands; (3) precise race-window timing between the phy link reset workqueue operation and driver removal - a non-trivial coordination requirement. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The NVD-assigned CVSS 3.1 score of 8.4 with PR:N is misleading and likely inflated for this vulnerability. … 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 Apply the upstream kernel fixes merged to the stable trees, available at https://git.kernel.org/stable/c/cb414aff28e18e6f5cff9f87ea31376ed8af317b, https://git.kernel.org/stable/c/4867dba229292e13fc19ed865ec1839661952ff9, and https://git.kernel.org/stable/c/67b85a88265df19f049241d8c00571a5408f4eeb. … Detailed patch versions, workarounds, and compensating controls in full report.
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Recommended ActionAI

Within 24 hours, identify systems running the hisi_sas v3 driver and confirm applicability to your infrastructure; within 7 days, schedule patching for affected systems during a maintenance window; within 30 days, complete deployment of the vendor patch and conduct stability validation across affected hardware.

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Vendor StatusVendor

SUSE

Severity: Moderate
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-2026-67529 vulnerability details – vuln.today
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