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Linux Kernel CVE-2026-72410

| EUVDEUVD-2026-59309 HIGH
2026-08-15 Linux GHSA-8v6p-qx2g-g6v4
High
Disputed · 7.8 Vendor: Linux
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Severity by source

Sources disagree (Low–High)
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 devlink interface requires CAP_NET_ADMIN (PR:L); hardware-specific driver flaw with potential full kernel-level impact justifies C:H/I:H/A:H within unchanged scope.

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
3.4 MEDIUM
AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:L
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
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

5
Analysis Generated
Aug 17, 2026 - 09:10 vuln.today
CVSS changed
Aug 17, 2026 - 06:22 NVD
7.8 (HIGH)
Patch available
Aug 15, 2026 - 07:20 EUVD
CVE Published
Aug 15, 2026 - 05:56 cve.org
HIGH 7.8
CVE Published
Aug 15, 2026 - 05:56 cve.org
UNKNOWN (no severity yet)

DescriptionCVE.org

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

octeontx2-af: Validate NIX maximum LFs correctly

NIX maximum number of LFs can be set via devlink command but that can be done before assigning any LFs to a PF/VF. The condition used to check whether any LFs are assigned is incorrect. This patch fixes that condition.

AnalysisAI

Incorrect bounds validation in the Linux kernel's octeontx2-af driver allows a local attacker with low privileges to trigger a kernel-level flaw by issuing a crafted devlink command that sets NIX maximum LFs before any PF/VF assignment, bypassing the faulty assignment-check condition. Systems running Marvell OcteonTX2 SoC hardware with the octeontx2-af driver loaded are affected across multiple stable kernel branches originating from commit dd7842878633453e38d6a4927593dd28b9d8ab91. EPSS exploitation probability is very low at 0.21% (11th percentile), no public exploit code has been identified, and this vulnerability is not listed in the CISA KEV catalog.

Technical ContextAI

The octeontx2-af kernel driver manages the Marvell OcteonTX2 Application Function (AF) component of OcteonTX2 SoC-based network controllers. The NIX (Network Interface X) block within this architecture allocates Local Functions (LFs) that are assigned to PF (Physical Function) or VF (Virtual Function) entities via the kernel's devlink interface. The vulnerability stems from an incorrect conditional check intended to verify whether any LFs have already been assigned before allowing the maximum LF count to be modified via devlink. This guard condition is logically flawed, meaning the kernel does not properly enforce the assignment state, potentially permitting configuration of LF counts that create inconsistent or out-of-bounds kernel data structures. No CWE has been formally assigned, but the root cause class is consistent with improper input validation (CWE-20) or incorrect comparison logic. Affected CPE: cpe:2.3:a:linux:linux:*:*:*:*:*:*:*:* across branches introduced at commit dd7842878633453e38d6a4927593dd28b9d8ab91.

RemediationAI

Upgrade to a patched Linux kernel stable release: 6.12.97 or later on the 6.12.x branch (commit 0933fe0130eb71af0c3ab481b40f543b458a8c54, see https://git.kernel.org/stable/c/0933fe0130eb71af0c3ab481b40f543b458a8c54), 6.18.40 or later on the 6.18.x branch (https://git.kernel.org/stable/c/e0ac054416bf4e913fe96cefefe94e3331bbe6fa), 7.1.5 or later (https://git.kernel.org/stable/c/b1f6381acf9d55fab208e8b4c252a5a671820bd9), or 7.2-rc1 and beyond (https://git.kernel.org/stable/c/1576d12a39860418d6a68b402fda71a48f04a57c). As a compensating control where patching is not immediately possible, restricting access to the devlink interface by removing CAP_NET_ADMIN from unprivileged processes or enforcing strict namespace isolation (using user namespaces with reduced capabilities) will limit the attack surface, though this may impact legitimate network management workflows. Blacklisting the octeontx2-af module on systems where OcteonTX2 hardware is not actively used is another option but will disable associated NIC functionality.

Vendor StatusVendor

SUSE

Severity: Moderate
Product Status
SUSE Linux Enterprise Desktop 15 SP7 Not-Affected
SUSE Linux Enterprise Desktop 15 SP7 Not-Affected
SUSE Linux Enterprise High Availability Extension 15 SP7 Not-Affected
SUSE Linux Enterprise High Availability Extension 15 SP7 Not-Affected
SUSE Linux Enterprise High Availability Extension 16.0 Not-Affected

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CVE-2026-72410 vulnerability details – vuln.today

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