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NVD / CVE Program· CNA Linux

CVE-2026-72176: mm/damon/sysfs-schemes: put stats for scheme_add_dirs() internal error

Noroxi assessment

Priority: Monitor (action score 0/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.20% (FIRST EPSS).
  • Fixed version: Linux Linux 05ea83ee88ca70f8932906d9f2617ff996f45b50, 40a04601a3f66cabd6629c258a07af645a658865, 50a753171d255895e5dd41566986b48dcec06f31.

Low priority for now. Upgrade to Linux Linux 05ea83ee88ca70f8932906d9f2617ff996f45b50, 40a04601a3f66cabd6629c258a07af645a658865, 50a753171d255895e5dd41566986b48dcec06f31 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

In the Linux kernel, the following vulnerability has been resolved: mm/damon/sysfs-schemes: put stats for scheme_add_dirs() internal error damon_sysfs_scheme_add_dirs() setup the tried_regions directory after the stats directory setup is completed. When the tried_regions directory setup is failed, the setup function ensures the reference for the tried regions directory is released. Hence the error path should put references on setup succeeded directory objects, starting from the stats directory. However, the error path is putting the tried_regions directory instead of the stats directory. As a direct result, the stats directory object is leaked. Worse yet, if the tried_regions directory setup failed from the initial allocation, the scheme->tried_regions field remains uninitialized. The following kobject_put(&scheme->tried_regions->kobj) call in the error path will dereference the uninitialized memory. The setup failures should not be common. But once it happens, the consequence is quite bad. Fix this issue by correctly putting the stats directory instead of the tried_regions directory. The issue was discovered [1] by Sashiko.

—No exploit Fix available
Published
Aug 15, 2026
Updated
Aug 17, 2026
EPSS
0.2% · 11th percentile
CWE
—

Report tools

JSON

Action score

0

Monitor

Low priority for now.

CVSS
0 / 40 · —
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.2%

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

—

Versions reported by the vendor

Affected version ranges reported by the assigning authority (Linux). Independent of NVD's CPE analysis and usually ahead of it.

  • Linux Linux

    • 6.2affected
    • 5181b75f438d2e5b7f27bf48c6ea88a87c2882b7 and later · before 50a753171d255895e5dd41566986b48dcec06f31affected · git
    • 5181b75f438d2e5b7f27bf48c6ea88a87c2882b7 and later · before f63d6e5ba72aeacdee4fddc902bd7616cd62b919affected · git
    • 5181b75f438d2e5b7f27bf48c6ea88a87c2882b7 and later · before 40a04601a3f66cabd6629c258a07af645a658865affected · git
    • 5181b75f438d2e5b7f27bf48c6ea88a87c2882b7 and later · before 6b6b5d7c2c957136b92c00b77b7175259f13082baffected · git
    • 5181b75f438d2e5b7f27bf48c6ea88a87c2882b7 and later · before 05ea83ee88ca70f8932906d9f2617ff996f45b50affected · git
    • before 6.2not affected · semver
    • 6.6.145 and later · up to and including 6.6.*not affected · semver
    • 6.12.97 and later · up to and including 6.12.*not affected · semver
    • 6.18.40 and later · up to and including 6.18.*not affected · semver

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:13linuxbefore 6.12.100-16.12.100-1
Debian:14linuxbefore 7.1.5-17.1.5-1

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-74705udp: fix potential use-after-free in tunnel segmentation
    40Plan
  • CVE-2026-74612veth: fix skb length accounting after XDP frag adjustment
    40Plan
  • CVE-2026-74475vxlan: use neigh_ha_snapshot() in route_shortcircuit()
    40Plan

Published before and after this one in the same product

  • ← EarlierCVE-2026-72173Aug 15, 2026 · fs/proc/task_mmu: do not warn on seeing non-migration pmd entry
    0Monitor
  • ← EarlierCVE-2026-72174Aug 15, 2026 · fs/proc/task_mmu: fix hugetlb self-deadlock in pagemap_scan_pte_hole()
    0Monitor
  • Later →CVE-2026-72177Aug 15, 2026 · mm/damon/sysfs-schemes: fix dir put orders in access_pattern_add_dirs()
    0Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
Linux Linux05ea83ee88ca70f8932906d9f2617ff996f45b50Vendor (CNA)
Linux Linux40a04601a3f66cabd6629c258a07af645a658865Vendor (CNA)
Linux Linux50a753171d255895e5dd41566986b48dcec06f31Vendor (CNA)
Linux Linux6b6b5d7c2c957136b92c00b77b7175259f13082bVendor (CNA)
Linux Linuxf63d6e5ba72aeacdee4fddc902bd7616cd62b919Vendor (CNA)
debian:linux6.12.100-1 · Debian:13Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

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No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

No CVSS vector for this record, so attack conditions can't be derived.

Weakness class (CWE)

—

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log

  1. Fix✗ → ✓

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References

Show all references (4 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

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