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NVD / CVE Program· CNA Linux

CVE-2023-53535: net: bcmgenet: Add a check for oversized 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: 0.23% (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 124ca24e0de958d2e20e0aa1e2434af7b72f8887, 411317d2a4a7d6049d8efeef0d32ae43f8baefce, 5c0862c2c962052ed5055220a00ac1cefb92fbcd.

Low priority for now. Upgrade to Linux Linux 124ca24e0de958d2e20e0aa1e2434af7b72f8887, 411317d2a4a7d6049d8efeef0d32ae43f8baefce, 5c0862c2c962052ed5055220a00ac1cefb92fbcd 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: net: bcmgenet: Add a check for oversized packets Occasionnaly we may get oversized packets from the hardware which exceed the nomimal 2KiB buffer size we allocate SKBs with. Add an early check which drops the packet to avoid invoking skb_over_panic() and move on to processing the next packet.

MediumCVSS 5.5 · v3.1—No exploit Fix available
Published
Oct 4, 2025
Updated
Oct 15, 2026
EPSS
0.2% · 14th percentile
CWE
—

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
7.1
1.6 point gap

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/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-2023-53535

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 kernel3.15 and later · before 4.14.308
  • linux linux kernel4.15 and later · before 4.19.276
  • linux linux kernel4.20 and later · before 5.4.235
  • linux linux kernel5.5 and later · before 5.10.173
  • linux linux kernel5.11 and later · before 5.15.99
  • linux linux kernel5.16 and later · before 6.1.16
  • linux linux kernel6.2 and later · before 6.2.3

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

    • 3.15affected
    • 1c1008c793fa46703a2fee469f4235e1c7984333 and later · before 7cdb07e10c1258c08f31b24898930e4ece88d163affected · git
    • 1c1008c793fa46703a2fee469f4235e1c7984333 and later · before c34b1c0870323649d45c5074828d7f754dea2673affected · git
    • 1c1008c793fa46703a2fee469f4235e1c7984333 and later · before 87363d1ab55e497702a9506ff423c422639c8a25affected · git
    • 1c1008c793fa46703a2fee469f4235e1c7984333 and later · before 841881320562cbeac7046b537b91cd000480cea2affected · git
    • 1c1008c793fa46703a2fee469f4235e1c7984333 and later · before 124ca24e0de958d2e20e0aa1e2434af7b72f8887affected · git
    • 1c1008c793fa46703a2fee469f4235e1c7984333 and later · before 5f56767fb5f2df875b6553e08dbec6a45431c988affected · git
    • 1c1008c793fa46703a2fee469f4235e1c7984333 and later · before 411317d2a4a7d6049d8efeef0d32ae43f8baefceaffected · git
    • 1c1008c793fa46703a2fee469f4235e1c7984333 and later · before 5c0862c2c962052ed5055220a00ac1cefb92fbcdaffected · git
    • before 3.15not affected · semver

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.20-16.1.20-1

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-2022-50490Oct 4, 2025 · bpf: Propagate error from htab_lock_bucket() to userspace
    28Monitor
  • ← EarlierCVE-2022-50493Oct 4, 2025 · scsi: qla2xxx: Fix crash when I/O abort times out
    22Monitor
  • Later →CVE-2023-53538Oct 4, 2025 · btrfs: insert tree mod log move in push_node_left
    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 Linux124ca24e0de958d2e20e0aa1e2434af7b72f8887Vendor (CNA)
Linux Linux411317d2a4a7d6049d8efeef0d32ae43f8baefceVendor (CNA)
Linux Linux5c0862c2c962052ed5055220a00ac1cefb92fbcdVendor (CNA)
Linux Linux5f56767fb5f2df875b6553e08dbec6a45431c988Vendor (CNA)
Linux Linux7cdb07e10c1258c08f31b24898930e4ece88d163Vendor (CNA)
Linux Linux841881320562cbeac7046b537b91cd000480cea2Vendor (CNA)
Linux Linux87363d1ab55e497702a9506ff423c422639c8a25Vendor (CNA)
Linux Linuxc34b1c0870323649d45c5074828d7f754dea2673Vendor (CNA)
debian:linux6.1.20-1 · 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)

—

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 (7 more)

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

All records