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NVD / CVE Program· CNA Linux

CVE-2023-52937: HV: hv_balloon: fix memory leak with using debugfs_lookup()

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: 0.21% (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 0b570a059cf42ad6e2eb632f47c23813d58d8303, 6dfb0771429a63db8561d44147f2bb76f93e1c86.

Low priority for now. Upgrade to Linux Linux 0b570a059cf42ad6e2eb632f47c23813d58d8303, 6dfb0771429a63db8561d44147f2bb76f93e1c86 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: HV: hv_balloon: fix memory leak with using debugfs_lookup() When calling debugfs_lookup() the result must have dput() called on it, otherwise the memory will leak over time. To make things simpler, just call debugfs_lookup_and_remove() instead which handles all of the logic at once.

Published
Mar 27, 2025
Updated
Jun 17, 2026
EPSS
0.2% · 11th 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 · 0.2%

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-2023-52937

When you'll hear from us

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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

    • 6.0affected
    • d180e0a1be6cea2b7436fadbd1c96aecdf3c46c7 and later · before 0b570a059cf42ad6e2eb632f47c23813d58d8303affected · git
    • d180e0a1be6cea2b7436fadbd1c96aecdf3c46c7 and later · before 6dfb0771429a63db8561d44147f2bb76f93e1c86affected · git
    • before 6.0not affected · semver
    • 6.1.11 and later · up to and including 6.1.*not affected · semver
    • 6.2 and laternot affected · original_commit_for_fix

Affected versions

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

  • linux linux kernel6.0 and later · before 6.1.11
  • linux linux kernel6.2

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.11-16.1.11-1
SUSE:Linux Enterprise High Performance Computing 15 SP5-ESPOSkernel-64kbbefore 5.14.21-150500.55.103.15.14.21-150500.55.103.1
SUSE:Linux Enterprise High Performance Computing 15 SP5-ESPOSkernel-docsbefore 5.14.21-150500.55.103.15.14.21-150500.55.103.1
SUSE:Linux Enterprise High Performance Computing 15 SP5-ESPOSkernel-obs-buildbefore 5.14.21-150500.55.103.15.14.21-150500.55.103.1
SUSE:Linux Enterprise High Performance Computing 15 SP5-ESPOSkernel-symsbefore 5.14.21-150500.55.103.15.14.21-150500.55.103.1
SUSE:Linux Enterprise Live Patching 15 SP5kernel-livepatch-SLE15-SP5_Update_26before 1-150500.11.3.11-150500.11.3.1
SUSE:Linux Enterprise Micro 5.5kernel-defaultbefore 5.14.21-150500.55.103.15.14.21-150500.55.103.1
SUSE:Linux Enterprise Micro 5.5kernel-default-basebefore 5.14.21-150500.55.103.1.150500.6.49.15.14.21-150500.55.103.1.150500.6.49.1
SUSE:Linux Enterprise Micro 5.5kernel-rtbefore 5.14.21-150500.13.94.15.14.21-150500.13.94.1
SUSE:Linux Enterprise Micro 5.5kernel-sourcebefore 5.14.21-150500.55.103.15.14.21-150500.55.103.1
SUSE:Linux Enterprise Micro 5.5kernel-source-rtbefore 5.14.21-150500.13.94.15.14.21-150500.13.94.1
SUSE:Linux Enterprise Server 15 SP5-LTSSkernel-zfcpdumpbefore 5.14.21-150500.55.103.15.14.21-150500.55.103.1

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-2023-52935Mar 27, 2025 · mm/khugepaged: fix ->anon_vma race
    31Monitor
  • ← EarlierCVE-2023-52936Mar 27, 2025 · kernel/irq/irqdomain.c: fix memory leak with using debugfs_lookup()
    22Monitor
  • Later →CVE-2023-52938Mar 27, 2025 · usb: typec: ucsi: Don't attempt to resume the ports before they exist
    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 Linux0b570a059cf42ad6e2eb632f47c23813d58d8303Vendor (CNA)
Linux Linux6dfb0771429a63db8561d44147f2bb76f93e1c86Vendor (CNA)
debian:linux6.1.11-1 · Debian:12Package registry (OSV)
suse:kernel-64kb5.14.21-150500.55.103.1 · SUSE:Linux Enterprise High Performance Computing 15 SP5-ESPOSPackage registry (OSV)
suse:kernel-default5.14.21-150500.55.103.1 · SUSE:Linux Enterprise Micro 5.5Package registry (OSV)
suse:kernel-default-base5.14.21-150500.55.103.1.150500.6.49.1 · SUSE:Linux Enterprise Micro 5.5Package registry (OSV)
suse:kernel-docs5.14.21-150500.55.103.1 · SUSE:Linux Enterprise High Performance Computing 15 SP5-ESPOSPackage registry (OSV)
suse:kernel-livepatch-SLE15-SP5_Update_261-150500.11.3.1 · SUSE:Linux Enterprise Live Patching 15 SP5Package registry (OSV)
suse:kernel-obs-build5.14.21-150500.55.103.1 · SUSE:Linux Enterprise High Performance Computing 15 SP5-ESPOSPackage registry (OSV)
suse:kernel-rt5.14.21-150500.13.94.1 · SUSE:Linux Enterprise Micro 5.5Package registry (OSV)
suse:kernel-source5.14.21-150500.55.103.1 · SUSE:Linux Enterprise Micro 5.5Package registry (OSV)
suse:kernel-source-rt5.14.21-150500.13.94.1 · SUSE:Linux Enterprise Micro 5.5Package registry (OSV)
suse:kernel-syms5.14.21-150500.55.103.1 · SUSE:Linux Enterprise High Performance Computing 15 SP5-ESPOSPackage registry (OSV)
suse:kernel-zfcpdump5.14.21-150500.55.103.1 · SUSE:Linux Enterprise Server 15 SP5-LTSSPackage 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.

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 (1 more)

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

All records