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Linux Kernel CVE-2026-80601

| EUVDEUVD-2026-67477 HIGH
2026-08-28 Linux GHSA-xq44-q9x4-cxw9
Information Disclosure Linux Red Hat Suse
8.8
CVSS 3.1 · Vendor: Linux
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Severity by source

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

Adjacent vector required for batman-adv mesh access; AC:H because reliable kernel UAF exploitation demands precise heap layout control beyond simple packet injection.

3.1 AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
4.0 AV:A/AC:H/AT:N/PR:N/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
Red Hat
5.5 MEDIUM
qualitative

Primary rating from Vendor (Linux).

CVSS VectorVendor: Linux

Attack Vector
Adjacent
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 - 07:28 vuln.today
CVSS changed
Aug 29, 2026 - 07:22 NVD
8.8 (HIGH)
Patch available
Aug 28, 2026 - 09:02 EUVD
CVE Published
Aug 28, 2026 - 06:48 cve.org
UNKNOWN (no severity yet)
CVE Published
Aug 28, 2026 - 06:48 cve.org
HIGH 8.8

DescriptionCVE.org

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

batman-adv: gw: acquire ethernet header only after skb realloc

The pskb_may_pull() called by batadv_get_vid() could reallocate the buffer behind the skb. Variables which were pointing to the old buffer need to be reassigned to avoid an use-after-free.

AnalysisAI

Use-after-free in the Linux kernel's batman-adv mesh networking gateway module exposes systems on batman-adv mesh segments to kernel memory corruption via crafted Ethernet frames. The flaw occurs because pskb_may_pull(), called within batadv_get_vid(), can reallocate the socket buffer backing store, leaving the ethernet header pointer stale; the code then dereferences this freed pointer before the fix reassigns it. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
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Delivery
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Exploit
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Execution
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Vulnerability AssessmentAI

Exploitation The batman-adv kernel module must be loaded and actively configured as a mesh networking overlay - it is not loaded by default in any mainstream Linux distribution and requires explicit installation, module loading, and interface configuration. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The NVD CVSS 3.1 vector AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H yields 8.8, but real-world risk is substantially lower than this headline score suggests. … 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 The primary remediation is upgrading to a patched kernel version for the applicable stable series: 5.10.261, 5.15.212, 6.1.178, 6.6.145, 6.12.97, 6.18.40, 7.1.5, or 7.2. … Detailed patch versions, workarounds, and compensating controls in full report.
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Recommended ActionAI

Within 24 hours, identify all systems running batman-adv mesh networking across your infrastructure and assess their criticality; no public exploit identified at time of analysis but the kernel-level nature of this vulnerability warrants urgent inventory. …

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Vendor StatusVendor

SUSE

Severity: Important
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 Affected

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CVE-2026-80601 vulnerability details – vuln.today
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