CVE-2026-80592
In the Linux kernel, the following vulnerability has been resolved: samples/damon/mtier: fail early if address range parameters are invalid The comment on top of `struct damon_region` clearly say…
Overview
CVE-2026-80592 is a known-severity vulnerability. It was published on August 28, 2026.
Technical description
In the Linux kernel, the following vulnerability has been resolved:
samples/damon/mtier: fail early if address range parameters are invalid
The comment on top of `struct damon_region` clearly says that
For any use case, @ar should be non-zero positive size.
which is now verified in damon_verify_new_region() if the kernel is built
with DAMON_DEBUG_SANITY.
The WARN_ONCE() can be triggered if the mtier sample module is enabled
before node{0,1}_{start,end}_addr have been properly initialized, which is
obviously not good.
------------[ cut here ]------------
start 0 >= end 0
WARNING: mm/damon/core.c:217 at damon_new_region+0xf4/0x118, CPU#59: bash/341468
Call trace:
damon_new_region+0xf4/0x118 (P)
damon_set_regions+0xfc/0x3c0
damon_sample_mtier_build_ctx+0xe8/0x3a8
damon_sample_mtier_start+0x1c/0x90
damon_sample_mtier_enable_store+0x98/0xb0
param_attr_store+0xb4/0x128
module_attr_store+0x2c/0x50
sysfs_kf_write+0x58/0x90
kernfs_fop_write_iter+0x16c/0x238
vfs
Remediation
Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
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Frequently asked questions
What is CVE-2026-80592?
CVE-2026-80592 is a known-severity vulnerability. It was published on August 28, 2026.
How severe is CVE-2026-80592?
CVSS score information is not yet available for this vulnerability. Check back as the CVE record is updated by NVD analysts.
How do I fix or remediate CVE-2026-80592?
Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2026-80592?
CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-80592 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.