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NVD / CVE Program· CNA Linux

CVE-2023-53226: wifi: mwifiex: Fix OOB and integer underflow when rx packets

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: 0.24% (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 11958528161731c58e105b501ed60b83a91ea941, 29eca8b7863d1d7de6c5b746b374e3487d14f154, 3975e21d4d01efaf0296ded40d11c06589c49245.
  • Severity is disputed: the assigning authority (CNA) scores it 8.8, NVD 5.5.

Low priority for now. Upgrade to Linux Linux 11958528161731c58e105b501ed60b83a91ea941, 29eca8b7863d1d7de6c5b746b374e3487d14f154, 3975e21d4d01efaf0296ded40d11c06589c49245 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: wifi: mwifiex: Fix OOB and integer underflow when rx packets Make sure mwifiex_process_mgmt_packet, mwifiex_process_sta_rx_packet and mwifiex_process_uap_rx_packet, mwifiex_uap_queue_bridged_pkt and mwifiex_process_rx_packet not out-of-bounds access the skb->data buffer.

MediumCVSS 5.5 · v3.1—No exploit Fix available
Published
Sep 15, 2025
Updated
Aug 5, 2026
EPSS
0.2% · 15th 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.

CNA vs NVD score

NVD
5.5
CNA · Linux
8.8
3.3 point gap

CVSS:3.1/AV:A/AC:L/PR:N/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-2023-53226

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 kernel3.7 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

    • 3.7affected
    • 2dbaf751b1dec3a603130a475f94cc4d3f404362 and later · before f517c97fc129995de77dd06aa5a74f909ebf568faffected · git
    • 2dbaf751b1dec3a603130a475f94cc4d3f404362 and later · before 8824aa4ab62c800f75d96f48e1883a5f56ec5869affected · git
    • 2dbaf751b1dec3a603130a475f94cc4d3f404362 and later · before 29eca8b7863d1d7de6c5b746b374e3487d14f154affected · git
    • 2dbaf751b1dec3a603130a475f94cc4d3f404362 and later · before 3fe3923d092e22d87d1ed03e2729db444b8c1331affected · git
    • 2dbaf751b1dec3a603130a475f94cc4d3f404362 and later · before 7c54b6fc39eb1aac51cf2945f8a25e2a47fdca02affected · git
    • 2dbaf751b1dec3a603130a475f94cc4d3f404362 and later · before 3975e21d4d01efaf0296ded40d11c06589c49245affected · git
    • 2dbaf751b1dec3a603130a475f94cc4d3f404362 and later · before a7300e3800e9fd5405e88ce67709c1a97783b9c8affected · git
    • 2dbaf751b1dec3a603130a475f94cc4d3f404362 and later · before 650d1bc02fba7b42f476d8b6643324abac5921edaffected · git
    • 2dbaf751b1dec3a603130a475f94cc4d3f404362 and later · before 11958528161731c58e105b501ed60b83a91ea941affected · git

Package-level exposure

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

EcosystemPackageAffected rangeFix
AlmaLinux:8bpftoolbefore 4.18.0-553.82.1.el8_104.18.0-553.82.1.el8_10
AlmaLinux:8kernelbefore 4.18.0-553.82.1.el8_104.18.0-553.82.1.el8_10
AlmaLinux:8kernel-abi-stablelistsbefore 4.18.0-553.82.1.el8_104.18.0-553.82.1.el8_10
AlmaLinux:8kernel-corebefore 4.18.0-553.82.1.el8_104.18.0-553.82.1.el8_10
AlmaLinux:8kernel-cross-headersbefore 4.18.0-553.82.1.el8_104.18.0-553.82.1.el8_10
AlmaLinux:8kernel-debugbefore 4.18.0-553.82.1.el8_104.18.0-553.82.1.el8_10
AlmaLinux:8kernel-debug-corebefore 4.18.0-553.82.1.el8_104.18.0-553.82.1.el8_10
AlmaLinux:8kernel-debug-develbefore 4.18.0-553.82.1.el8_104.18.0-553.82.1.el8_10
AlmaLinux:8kernel-debug-modulesbefore 4.18.0-553.82.1.el8_104.18.0-553.82.1.el8_10
AlmaLinux:8kernel-debug-modules-extrabefore 4.18.0-553.82.1.el8_104.18.0-553.82.1.el8_10
AlmaLinux:8kernel-develbefore 4.18.0-553.82.1.el8_104.18.0-553.82.1.el8_10
AlmaLinux:8kernel-docbefore 4.18.0-553.82.1.el8_104.18.0-553.82.1.el8_10
AlmaLinux:8kernel-headersbefore 4.18.0-553.82.1.el8_104.18.0-553.82.1.el8_10
AlmaLinux:8kernel-modulesbefore 4.18.0-553.82.1.el8_104.18.0-553.82.1.el8_10
AlmaLinux:8kernel-modules-extrabefore 4.18.0-553.82.1.el8_104.18.0-553.82.1.el8_10
AlmaLinux:8kernel-rtbefore 4.18.0-553.82.1.rt7.423.el8_104.18.0-553.82.1.rt7.423.el8_10
AlmaLinux:8kernel-rt-corebefore 4.18.0-553.82.1.rt7.423.el8_104.18.0-553.82.1.rt7.423.el8_10
AlmaLinux:8kernel-rt-debugbefore 4.18.0-553.82.1.rt7.423.el8_104.18.0-553.82.1.rt7.423.el8_10
AlmaLinux:8kernel-rt-debug-corebefore 4.18.0-553.82.1.rt7.423.el8_104.18.0-553.82.1.rt7.423.el8_10
AlmaLinux:8kernel-rt-debug-develbefore 4.18.0-553.82.1.rt7.423.el8_104.18.0-553.82.1.rt7.423.el8_10
AlmaLinux:8kernel-rt-debug-modulesbefore 4.18.0-553.82.1.rt7.423.el8_104.18.0-553.82.1.rt7.423.el8_10
AlmaLinux:8kernel-rt-debug-modules-extrabefore 4.18.0-553.82.1.rt7.423.el8_104.18.0-553.82.1.rt7.423.el8_10
AlmaLinux:8kernel-rt-develbefore 4.18.0-553.82.1.rt7.423.el8_104.18.0-553.82.1.rt7.423.el8_10
AlmaLinux:8kernel-rt-modulesbefore 4.18.0-553.82.1.rt7.423.el8_104.18.0-553.82.1.rt7.423.el8_10

+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-2023-53224Sep 15, 2025 · ext4: Fix function prototype mismatch for ext4_feat_ktype
    22Monitor
  • ← EarlierCVE-2023-53225Sep 15, 2025 · spi: imx: Don't skip cleanup in remove's error path
    22Monitor
  • Later →CVE-2023-53228Sep 15, 2025 · drm/amdgpu: drop redundant sched job cleanup when cs is aborted
    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 Linux11958528161731c58e105b501ed60b83a91ea941Vendor (CNA)
Linux Linux29eca8b7863d1d7de6c5b746b374e3487d14f154Vendor (CNA)
Linux Linux3975e21d4d01efaf0296ded40d11c06589c49245Vendor (CNA)
Linux Linux3fe3923d092e22d87d1ed03e2729db444b8c1331Vendor (CNA)
Linux Linux650d1bc02fba7b42f476d8b6643324abac5921edVendor (CNA)
Linux Linux7c54b6fc39eb1aac51cf2945f8a25e2a47fdca02Vendor (CNA)
Linux Linux8824aa4ab62c800f75d96f48e1883a5f56ec5869Vendor (CNA)
Linux Linuxa7300e3800e9fd5405e88ce67709c1a97783b9c8Vendor (CNA)
Linux Linuxf517c97fc129995de77dd06aa5a74f909ebf568fVendor (CNA)
almalinux:bpftool4.18.0-553.82.1.el8_10 · AlmaLinux:8Package registry (OSV)
almalinux:kernel4.18.0-553.82.1.el8_10 · AlmaLinux:8Package registry (OSV)
almalinux:kernel-rt4.18.0-553.82.1.rt7.423.el8_10 · AlmaLinux:8Package registry (OSV)
almalinux:kernel-rt-core4.18.0-553.82.1.rt7.423.el8_10 · AlmaLinux:8Package registry (OSV)
almalinux:kernel-rt-debug4.18.0-553.82.1.rt7.423.el8_10 · AlmaLinux:8Package registry (OSV)
almalinux:kernel-rt-debug-core4.18.0-553.82.1.rt7.423.el8_10 · AlmaLinux:8Package registry (OSV)
almalinux:kernel-rt-debug-devel4.18.0-553.82.1.rt7.423.el8_10 · AlmaLinux:8Package registry (OSV)
almalinux:kernel-rt-debug-modules4.18.0-553.82.1.rt7.423.el8_10 · AlmaLinux:8Package registry (OSV)
almalinux:kernel-rt-debug-modules-extra4.18.0-553.82.1.rt7.423.el8_10 · AlmaLinux:8Package registry (OSV)
almalinux:kernel-rt-devel4.18.0-553.82.1.rt7.423.el8_10 · AlmaLinux:8Package registry (OSV)
almalinux:kernel-rt-modules4.18.0-553.82.1.rt7.423.el8_10 · AlmaLinux:8Package registry (OSV)
almalinux:kernel-rt-modules-extra4.18.0-553.82.1.rt7.423.el8_10 · AlmaLinux:8Package registry (OSV)
debian:linux6.1.55-1 · Debian:12Package registry (OSV)
red hat:kernel-rt0:4.18.0-553.82.1.rt7.423.el8_10 · Red Hat:enterprise_linux:8::nfvPackage registry (OSV)
red hat:kernel-rt-core0:4.18.0-553.82.1.rt7.423.el8_10 · Red Hat:enterprise_linux:8::nfvPackage registry (OSV)
red hat:kernel-rt-debug0:4.18.0-553.82.1.rt7.423.el8_10 · Red Hat:enterprise_linux:8::nfvPackage registry (OSV)
red hat:kernel-rt-debug-core0:4.18.0-553.82.1.rt7.423.el8_10 · Red Hat:enterprise_linux:8::nfvPackage registry (OSV)
red hat:kernel-rt-debug-debuginfo0:4.18.0-553.82.1.rt7.423.el8_10 · Red Hat:enterprise_linux:8::nfvPackage registry (OSV)
red hat:kernel-rt-debug-devel0:4.18.0-553.82.1.rt7.423.el8_10 · Red Hat:enterprise_linux:8::nfvPackage registry (OSV)
red hat:kernel-rt-debug-kvm0:4.18.0-553.82.1.rt7.423.el8_10 · Red Hat:enterprise_linux:8::nfvPackage registry (OSV)
red hat:kernel-rt-debug-modules0:4.18.0-553.82.1.rt7.423.el8_10 · Red Hat:enterprise_linux:8::nfvPackage registry (OSV)

+4

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.

  • CVE-2026-53176283 days apartIB/isert: Reject login PDUs shorter than ISER_HEADERS_LEN
    39Monitor
  • CVE-2026-63940307 days apartKVM: SEV: Ignore Port I/O requests of length '0'
    37Monitor
  • CVE-2024-26828516 days apartcifs: fix underflow in parse_server_interfaces()
    37Monitor
  • CVE-2026-43187233 days apartxfs: delete attr leaf freemap entries when empty
    35Monitor
  • CVE-2026-53178283 days apartstaging: rtl8723bs: rtw_mlme: add bounds checks before ie_length subtraction
    32Monitor
  • CVE-2026-31656221 days apartdrm/i915/gt: fix refcount underflow in intel_engine_park_heartbeat
    31Monitor

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-191 · Integer Underflow (Wrap or Wraparound)

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 (8 more)

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

All records