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NVD / CVE Program· CNA Linux

CVE-2023-53435: cassini: Fix a memory leak in the error handling path of cas_init_one()

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 11c0ed097a874156957b515d0ba7e356142eab87, 172146c26f0c1b86ab4e9ebffc7e06f04229fa17, 234e744d86bd95b381d24546df2dba72804e0219.

Low priority for now. Upgrade to Linux Linux 11c0ed097a874156957b515d0ba7e356142eab87, 172146c26f0c1b86ab4e9ebffc7e06f04229fa17, 234e744d86bd95b381d24546df2dba72804e0219 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: cassini: Fix a memory leak in the error handling path of cas_init_one() cas_saturn_firmware_init() allocates some memory using vmalloc(). This memory is freed in the .remove() function but not it the error handling path of the probe. Add the missing vfree() to avoid a memory leak, should an error occur.

MediumCVSS 5.5 · v3.1—No exploit Fix available
Published
Sep 18, 2025
Updated
Jun 17, 2026
EPSS
0.1% · 4th 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-2023-53435

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 kernel2.6.28 and later · before 4.14.316
  • linux linux kernel4.15 and later · before 4.19.284
  • linux linux kernel4.20 and later · before 5.4.244
  • linux linux kernel5.5 and later · before 5.10.181
  • linux linux kernel5.11 and later · before 5.15.113
  • linux linux kernel5.16 and later · before 6.1.30
  • linux linux kernel6.2 and later · before 6.3.4
  • linux linux kernel6.4

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

    • 2.6.28affected
    • fcaa40669cd798ca2ac0d15441e8a1d1145f2b16 and later · before 11c0ed097a874156957b515d0ba7e356142eab87affected · git
    • fcaa40669cd798ca2ac0d15441e8a1d1145f2b16 and later · before 60d8e8b88087d68e10c8991a0f6733fa2f963ff0affected · git
    • fcaa40669cd798ca2ac0d15441e8a1d1145f2b16 and later · before e20105d967ab5b53ff50a0e5991fe37324d2ba20affected · git
    • fcaa40669cd798ca2ac0d15441e8a1d1145f2b16 and later · before dc61f7582cc92d547d02e141cd66f5d1f4ed8012affected · git
    • fcaa40669cd798ca2ac0d15441e8a1d1145f2b16 and later · before 234e744d86bd95b381d24546df2dba72804e0219affected · git
    • fcaa40669cd798ca2ac0d15441e8a1d1145f2b16 and later · before 172146c26f0c1b86ab4e9ebffc7e06f04229fa17affected · git
    • fcaa40669cd798ca2ac0d15441e8a1d1145f2b16 and later · before b8b1a667744741fa7807b09a12797a27f14f3facaffected · git
    • fcaa40669cd798ca2ac0d15441e8a1d1145f2b16 and later · before 412cd77a2c24b191c65ea53025222418db09817caffected · git
    • before 2.6.28not affected · semver

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.37-16.1.37-1
Debian:13linuxbefore 6.3.7-16.3.7-1

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-2023-53433Sep 18, 2025 · net: add vlan_get_protocol_and_depth() helper
    22Monitor
  • ← EarlierCVE-2023-53434Sep 18, 2025 · remoteproc: imx_dsp_rproc: Add custom memory copy implementation for i.MX DSP Cores
    22Monitor
  • Later →CVE-2023-53436Sep 18, 2025 · scsi: snic: Fix possible memory leak if device_add() fails
    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 Linux11c0ed097a874156957b515d0ba7e356142eab87Vendor (CNA)
Linux Linux172146c26f0c1b86ab4e9ebffc7e06f04229fa17Vendor (CNA)
Linux Linux234e744d86bd95b381d24546df2dba72804e0219Vendor (CNA)
Linux Linux412cd77a2c24b191c65ea53025222418db09817cVendor (CNA)
Linux Linux60d8e8b88087d68e10c8991a0f6733fa2f963ff0Vendor (CNA)
Linux Linuxb8b1a667744741fa7807b09a12797a27f14f3facVendor (CNA)
Linux Linuxdc61f7582cc92d547d02e141cd66f5d1f4ed8012Vendor (CNA)
Linux Linuxe20105d967ab5b53ff50a0e5991fe37324d2ba20Vendor (CNA)
debian:linux6.1.37-1 · 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. Fix✗ → ✓

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

References

Show all references (7 more)

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

All records