LiveActive security incident?Get immediate response
CVE Record

CVE-2023-53535: net: bcmgenet: Add a check for oversized packets

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.

UnknownCVSS not scoredNot KEV-listedUpdated
Discuss exposureBack to CVEs
Glexia's TakeAutomated analysisunknown

Security readout for executives and security teams

Plain-English summary

This Linux kernel issue can cause systems with the Broadcom GENET network driver to mishandle oversized packets from hardware and hit a kernel panic path. The likely business impact is availability loss, not confirmed data theft. Public sources do not provide CVSS, CWE, or confirmed exploitation.

Executive priority

Treat as a targeted availability risk for Linux-based devices using Broadcom GENET Ethernet. Prioritize patching where those devices support critical network services, but do not assume broad enterprise exposure without driver and hardware confirmation.

Technical view

The bcmgenet receive path could receive packets larger than the nominal 2 KiB SKB allocation. The fix adds an early oversized-packet check and drops those packets before skb_over_panic() can be triggered. Affected exposure depends on running affected Linux kernel versions with the bcmgenet driver and matching hardware.

Likely exposure

Exposure is likely limited to Linux systems that use the bcmgenet Broadcom GENET Ethernet driver on affected kernel versions. General Linux systems without this driver or hardware are unlikely to be exposed based on the provided sources.

Exploitation context

The source bundle does not show CISA KEV listing, active exploitation, public exploit details, or a CVSS score. The described failure mode suggests potential denial of service through kernel panic, but exploitability conditions are not fully documented.

Researcher notes

Evidence is strongest for the code defect and fix intent, not for attacker prerequisites. The CVE record lists Linux kernel affected versions and multiple stable commit references, but provides no CVSS, CWE, exploit status, or detailed attack scenario.

Mitigation direction

  • Apply a kernel or distribution update containing the referenced stable bcmgenet fixes.
  • Check your Linux vendor advisory for supported fixed package versions.
  • Prioritize devices that load the bcmgenet driver or depend on Broadcom GENET Ethernet.
  • If patching is delayed, monitor affected devices for kernel panic or network receive errors.

Validation and detection

  • Inventory kernels and identify systems using the bcmgenet driver.
  • Compare deployed kernel builds against vendor-fixed versions or referenced stable commits.
  • Review kernel logs for skb_over_panic or bcmgenet receive-path crash evidence.
  • Confirm updates through normal reboot and kernel version verification processes.
Prepared
Confidence
medium
Sources
10

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

ATT&CK lookup starting points

Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.

cve · low confidence lookup

CVE-2023-53535 mapping review

Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.

Open ATT&CK lookup
Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors
3Timeline events
0ADP providers
9Source links

Vulnerability timeline

Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.

  1. CVE reservedCVE Program

    The CVE ID was reserved by the assigning CNA.

  2. CVE publishedCVE Program

    The CVE record was published.

  3. CVE updatedCVE Program

    The CVE record metadata indicates this as the latest update time.

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
LinuxLinux1c1008c793fa46703a2fee469f4235e1c7984333, 1c1008c793fa46703a2fee469f4235e1c7984333, 1c1008c793fa46703a2fee469f4235e1c7984333, 1c1008c793fa46703a2fee469f4235e1c7984333, 1c1008c793fa46703a2fee469f4235e1c7984333, 1c1008c793fa46703a2fee469f4235e1c7984333, 1c1008c793fa46703a2fee469f4235e1c7984333, 1c1008c793fa46703a2fee469f4235e1c7984333unaffected
LinuxLinux3.15, 0, 4.14.308, 4.19.276, 5.4.235, 5.10.173, 5.15.99, 6.1.16, 6.2.3, 6.3affected
Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.