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NVD / CVE Program· CNA Linux

CVE-2026-23144: mm/damon/sysfs: cleanup attrs subdirs on context dir setup failure

MediumCVSS 5.5 · v3.1—No exploit Fix available

Noroxi assessment

Priority: Monitor (action score 22/100)

  • 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: 0.14% (FIRST EPSS).
  • Someone with local access to the system can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: Linux Linux 43964644348f6b1add3055c4a6cae8f77d892a6e, 5651c0c391c0029541794f9c4c9597faecfd401f, 78b4eb99751ebd37ceade78810bf94de80f7fb3a.

Low priority for now. Upgrade to Linux Linux 43964644348f6b1add3055c4a6cae8f77d892a6e, 5651c0c391c0029541794f9c4c9597faecfd401f, 78b4eb99751ebd37ceade78810bf94de80f7fb3a 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: cleanup attrs subdirs on context dir setup failure When a context DAMON sysfs directory setup is failed after setup of attrs/ directory, subdirectories of attrs/ directory are not cleaned up. As a result, DAMON sysfs interface is nearly broken until the system reboots, and the memory for the unremoved directory is leaked. Cleanup the directories under such failures.

Published
Feb 14, 2026
Updated
Oct 19, 2026
EPSS
0.1% · 3th percentile

Report tools

JSON

Action score

22

Monitor

Low priority for now.

CVSS
22 / 40 · 5.5 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.1%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2026-23144

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  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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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.

VendorProduct
linuxlinux kernel

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

    • 5.18affected
    • c951cd3b89010c7a4751b9d4ea074007e44851e6 and later · before db7dfe78fc81bdd2b532d77f340fe453f2360426affected · git
    • c951cd3b89010c7a4751b9d4ea074007e44851e6 and later · before 43964644348f6b1add3055c4a6cae8f77d892a6eaffected · git
    • c951cd3b89010c7a4751b9d4ea074007e44851e6 and later · before 5651c0c391c0029541794f9c4c9597faecfd401faffected · git
    • c951cd3b89010c7a4751b9d4ea074007e44851e6 and later · before 78b4eb99751ebd37ceade78810bf94de80f7fb3aaffected · git
    • c951cd3b89010c7a4751b9d4ea074007e44851e6 and later · before 9814cc832b88bd040fc2a1817c2b5469d0f7e862affected · git
    • before 5.18not affected · semver
    • 6.1.162 and later · up to and including 6.1.*not affected · semver
    • 6.6.122 and later · up to and including 6.6.*not affected · semver
    • 6.12.67 and later · up to and including 6.12.*not affected · semver
Affected versions · NVD (5)

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • linux linux kernel5.18 and later · before 6.1.162
  • linux linux kernel6.2 and later · before 6.6.122
  • linux linux kernel6.7 and later · before 6.12.67
  • linux linux kernel6.13 and later · before 6.18.7
  • linux linux kernel6.19

Package-level exposure

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

EcosystemPackageAffected rangeFix
AlmaLinux:10kernel-abi-stablelistsbefore 6.12.0-124.49.1.el10_16.12.0-124.49.1.el10_1
AlmaLinux:10kernel-docbefore 6.12.0-124.49.1.el10_16.12.0-124.49.1.el10_1
AlmaLinux:9kernelbefore 5.14.0-611.45.1.el9_75.14.0-611.45.1.el9_7
AlmaLinux:9kernel-64kbefore 5.14.0-611.45.1.el9_75.14.0-611.45.1.el9_7
AlmaLinux:9kernel-64k-corebefore 5.14.0-611.45.1.el9_75.14.0-611.45.1.el9_7
AlmaLinux:9kernel-64k-debugbefore 5.14.0-611.45.1.el9_75.14.0-611.45.1.el9_7
AlmaLinux:9kernel-64k-debug-corebefore 5.14.0-611.45.1.el9_75.14.0-611.45.1.el9_7
AlmaLinux:9kernel-64k-debug-develbefore 5.14.0-611.45.1.el9_75.14.0-611.45.1.el9_7
AlmaLinux:9kernel-64k-debug-devel-matchedbefore 5.14.0-611.45.1.el9_75.14.0-611.45.1.el9_7
AlmaLinux:9kernel-64k-debug-modulesbefore 5.14.0-611.45.1.el9_75.14.0-611.45.1.el9_7
AlmaLinux:9kernel-64k-debug-modules-corebefore 5.14.0-611.45.1.el9_75.14.0-611.45.1.el9_7
AlmaLinux:9kernel-64k-debug-modules-extrabefore 5.14.0-611.45.1.el9_75.14.0-611.45.1.el9_7
AlmaLinux:9kernel-64k-develbefore 5.14.0-611.45.1.el9_75.14.0-611.45.1.el9_7
AlmaLinux:9kernel-64k-devel-matchedbefore 5.14.0-611.45.1.el9_75.14.0-611.45.1.el9_7
AlmaLinux:9kernel-64k-modulesbefore 5.14.0-611.45.1.el9_75.14.0-611.45.1.el9_7
AlmaLinux:9kernel-64k-modules-corebefore 5.14.0-611.45.1.el9_75.14.0-611.45.1.el9_7
AlmaLinux:9kernel-64k-modules-extrabefore 5.14.0-611.45.1.el9_75.14.0-611.45.1.el9_7
AlmaLinux:9kernel-abi-stablelistsbefore 5.14.0-611.45.1.el9_75.14.0-611.45.1.el9_7
AlmaLinux:9kernel-corebefore 5.14.0-611.45.1.el9_75.14.0-611.45.1.el9_7
AlmaLinux:9kernel-cross-headersbefore 5.14.0-611.45.1.el9_75.14.0-611.45.1.el9_7
AlmaLinux:9kernel-debugbefore 5.14.0-611.45.1.el9_75.14.0-611.45.1.el9_7
AlmaLinux:9kernel-debug-corebefore 5.14.0-611.45.1.el9_75.14.0-611.45.1.el9_7
AlmaLinux:9kernel-debug-develbefore 5.14.0-611.45.1.el9_75.14.0-611.45.1.el9_7
AlmaLinux:9kernel-debug-devel-matchedbefore 5.14.0-611.45.1.el9_75.14.0-611.45.1.el9_7

+96

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-31431crypto: algif_aead - Revert to operating out-of-placeKEV
    90Now
  • CVE-2022-0847A flaw was found in the way the "flags" member of the new pipe buffer structure was lacking proper initialization in copy_page_to_iter_pipe…KEV
    89Now
  • CVE-2021-22555Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACEKEV
    85Now

Published before and after this one in the same product

  • ← EarlierCVE-2026-23142Feb 14, 2026 · mm/damon/sysfs-scheme: cleanup access_pattern subdirs on scheme dir setup failure
    22Monitor
  • ← EarlierCVE-2026-23143Feb 14, 2026 · virtio_net: Fix misalignment bug in struct virtnet_info
    22Monitor
  • Later →CVE-2026-23145Feb 14, 2026 · ext4: fix iloc.bh leak in ext4_xattr_inode_update_ref
    22Monitor

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 Linux43964644348f6b1add3055c4a6cae8f77d892a6eVendor (CNA)
Linux Linux5651c0c391c0029541794f9c4c9597faecfd401fVendor (CNA)
Linux Linux78b4eb99751ebd37ceade78810bf94de80f7fb3aVendor (CNA)
Linux Linux9814cc832b88bd040fc2a1817c2b5469d0f7e862Vendor (CNA)
Linux Linuxdb7dfe78fc81bdd2b532d77f340fe453f2360426Vendor (CNA)
almalinux:kernel5.14.0-611.45.1.el9_7 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k5.14.0-611.45.1.el9_7 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-core5.14.0-611.45.1.el9_7 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug5.14.0-611.45.1.el9_7 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug-core5.14.0-611.45.1.el9_7 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug-devel5.14.0-611.45.1.el9_7 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug-devel-matched5.14.0-611.45.1.el9_7 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug-modules5.14.0-611.45.1.el9_7 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug-modules-core5.14.0-611.45.1.el9_7 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug-modules-extra5.14.0-611.45.1.el9_7 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-devel5.14.0-611.45.1.el9_7 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-devel-matched5.14.0-611.45.1.el9_7 · AlmaLinux:9Package registry (OSV)
debian:linux6.1.162-1 · Debian:12Package registry (OSV)
red hat:bpftool-debuginfo0:7.3.0-427.121.1.el9_4 · Red Hat:rhel_eus:9.4::appstreamPackage registry (OSV)
red hat:kernel-64k-debug-debuginfo0:5.14.0-427.121.1.el9_4 · Red Hat:rhel_eus:9.4::appstreamPackage registry (OSV)
red hat:kernel-64k-debug-devel0:5.14.0-427.121.1.el9_4 · Red Hat:rhel_eus:9.4::appstreamPackage registry (OSV)
red hat:kernel-64k-debug-devel-matched0:5.14.0-427.121.1.el9_4 · Red Hat:rhel_eus:9.4::appstreamPackage registry (OSV)
red hat:kernel-64k-debuginfo0:5.14.0-427.121.1.el9_4 · Red Hat:rhel_eus:9.4::appstreamPackage registry (OSV)
red hat:kernel-64k-devel0:5.14.0-427.121.1.el9_4 · Red Hat:rhel_eus:9.4::appstreamPackage registry (OSV)
red hat:kernel-64k-devel-matched0:5.14.0-427.121.1.el9_4 · Red Hat:rhel_eus:9.4::appstreamPackage registry (OSV)
red hat:kernel-debug-debuginfo0:5.14.0-427.121.1.el9_4 · Red Hat:rhel_eus:9.4::appstreamPackage registry (OSV)
red hat:kernel-debug-devel0:5.14.0-427.121.1.el9_4 · Red Hat:rhel_eus:9.4::appstreamPackage registry (OSV)
red hat:kernel-debug-devel-matched0:5.14.0-427.121.1.el9_4 · Red Hat:rhel_eus:9.4::appstreamPackage registry (OSV)
red hat:kernel-debuginfo0:5.14.0-427.121.1.el9_4 · Red Hat:rhel_eus:9.4::appstreamPackage registry (OSV)
red hat:kernel-debuginfo-common-aarch640:5.14.0-427.121.1.el9_4 · Red Hat:rhel_eus:9.4::appstreamPackage registry (OSV)

+1

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.

Not on record for this CVE: EPSS history · patch commit or PR link · researcher credit · variant or chain candidate · public bounty program.

Technical details

Attack conditions

  • Someone with local access to the system can trigger it.
  • A low-privileged account is enough.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
none
Integrity
none
Availability
high · the service can be disrupted
Attack vector
Local
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
None
Integrity impact
None
Availability impact
High

Weakness class (CWE)

CWE-401 · Missing Release of Memory after Effective Lifetime

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

nvd-primary

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.

References

Show all references (4 more)

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

All records