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NVD / CVE Program· CNA Linux

CVE-2023-53518: PM / devfreq: Fix leak in devfreq_dev_release()

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: 0.16% (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 111bafa210ae546bee7644be730c42df9c35b66e, 1640e9c72173911ad0fddb05012c01eafe082c4e, 29811f4b8255d4238cf326f3bb7129784766beab.
  • Severity is disputed: the assigning authority (CNA) scores it 7.8, NVD 5.5.

Low priority for now. Upgrade to Linux Linux 111bafa210ae546bee7644be730c42df9c35b66e, 1640e9c72173911ad0fddb05012c01eafe082c4e, 29811f4b8255d4238cf326f3bb7129784766beab 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: PM / devfreq: Fix leak in devfreq_dev_release() srcu_init_notifier_head() allocates resources that need to be released with a srcu_cleanup_notifier_head() call. Reported by kmemleak.

MediumCVSS 5.5 · v3.1—No exploit Fix available
Published
Oct 1, 2025
Updated
Oct 15, 2026
EPSS
0.1% · 5th 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
total

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
5.5
CNA · Linux
7.8
2.3 point gap

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

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

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-2023-53518

When you'll hear from us

  • when it enters CISA KEV
  • 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

Affected versions

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

  • linux linux kernel4.7 and later · before 4.14.326
  • linux linux kernel4.15 and later · before 4.19.295
  • linux linux kernel4.20 and later · before 5.4.257
  • linux linux kernel5.5 and later · before 5.10.195
  • linux linux kernel5.11 and later · before 5.15.132
  • linux linux kernel5.16 and later · before 6.1.53
  • linux linux kernel6.2 and later · before 6.4.16
  • linux linux kernel6.5 and later · before 6.5.3

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

    • 4.7affected
    • 0fe3a66410a3ba96679be903f1e287d7a0a264a9 and later · before 7462483446cb9986568ad7adae746ce5f18d2968affected · git
    • 0fe3a66410a3ba96679be903f1e287d7a0a264a9 and later · before 64e6e0dc2d578c0a9e31cb4edd719f0a3ed98f6daffected · git
    • 0fe3a66410a3ba96679be903f1e287d7a0a264a9 and later · before 29811f4b8255d4238cf326f3bb7129784766beabaffected · git
    • 0fe3a66410a3ba96679be903f1e287d7a0a264a9 and later · before ab192e5e5d3b48415909a8408acfd007a607bcc0affected · git
    • 0fe3a66410a3ba96679be903f1e287d7a0a264a9 and later · before 111bafa210ae546bee7644be730c42df9c35b66eaffected · git
    • 0fe3a66410a3ba96679be903f1e287d7a0a264a9 and later · before 8918025feb2f5f7c73f2495c158f22997e25cb02affected · git
    • 0fe3a66410a3ba96679be903f1e287d7a0a264a9 and later · before 1640e9c72173911ad0fddb05012c01eafe082c4eaffected · git
    • 0fe3a66410a3ba96679be903f1e287d7a0a264a9 and later · before 3354c401c68d70567d1ef25d12f4e22a7813a3c6affected · git
    • 0fe3a66410a3ba96679be903f1e287d7a0a264a9 and later · before 5693d077595de721f9ddbf9d37f40e5409707dfeaffected · git

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.55-16.1.55-1
Debian:13linuxbefore 6.5.3-16.5.3-1

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-2023-53516Oct 1, 2025 · macvlan: add forgotten nla_policy for IFLA_MACVLAN_BC_CUTOFF
    31Monitor
  • ← EarlierCVE-2023-53517Oct 1, 2025 · tipc: do not update mtu if msg_max is too small in mtu negotiation
    22Monitor
  • Later →CVE-2023-53520Oct 1, 2025 · Bluetooth: Fix hci_suspend_sync crash
    18Monitor

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 Linux111bafa210ae546bee7644be730c42df9c35b66eVendor (CNA)
Linux Linux1640e9c72173911ad0fddb05012c01eafe082c4eVendor (CNA)
Linux Linux29811f4b8255d4238cf326f3bb7129784766beabVendor (CNA)
Linux Linux3354c401c68d70567d1ef25d12f4e22a7813a3c6Vendor (CNA)
Linux Linux5693d077595de721f9ddbf9d37f40e5409707dfeVendor (CNA)
Linux Linux64e6e0dc2d578c0a9e31cb4edd719f0a3ed98f6dVendor (CNA)
Linux Linux7462483446cb9986568ad7adae746ce5f18d2968Vendor (CNA)
Linux Linux8918025feb2f5f7c73f2495c158f22997e25cb02Vendor (CNA)
Linux Linuxab192e5e5d3b48415909a8408acfd007a607bcc0Vendor (CNA)
debian:linux6.1.55-1 · Debian:12Package 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.

No history yet (it accumulates with the daily EPSS job).

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

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

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

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.

Change log

  1. SSVC exploitation— → none
  2. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (8 more)

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

All records