LiveActive security incident?Get immediate response
CVE Record

CVE-2024-42151: bpf: mark bpf_dummy_struct_ops.test_1 parameter as nullable

In the Linux kernel, the following vulnerability has been resolved: bpf: mark bpf_dummy_struct_ops.test_1 parameter as nullable Test case dummy_st_ops/dummy_init_ret_value passes NULL as the first parameter of the test_1() function. Mark this parameter as nullable to make verifier aware of such possibility. Otherwise, NULL check in the test_1() code: SEC("struct_ops/test_1") int BPF_PROG(test_1, struct bpf_dummy_ops_state *state) { if (!state) return ...; ... access state ... } Might be removed by verifier, thus triggering NULL pointer dereference under certain conditions.

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

Security readout for executives and security teams

Plain-English summary

CVE-2024-42151 is a Linux kernel BPF verifier issue. A test hook can receive a NULL value, but the verifier may not recognize that and can remove a defensive NULL check. Under certain conditions this may lead to a kernel NULL pointer dereference. Business impact is unclear from the sources.

Executive priority

Treat this as a kernel hygiene item unless vendor guidance assigns higher severity. There is no cited evidence of active exploitation, but kernel NULL dereference issues can affect availability and should be remediated through normal kernel patch cycles.

Technical view

The Linux BPF change marks the first parameter of bpf_dummy_struct_ops.test_1 as nullable. Without that annotation, verifier optimization may eliminate a NULL check in a struct_ops BPF program, allowing later access to a NULL state pointer and triggering a NULL pointer dereference under certain conditions.

Likely exposure

Exposure appears limited to Linux kernels identified by the CVE record, including listed affected 6.8-era versions and fixes associated with 6.9.9 and 6.10. Distribution kernels may carry backports, so version strings alone may not prove exposure.

Exploitation context

The provided sources do not show active exploitation, public weaponization, KEV listing, CVSS scoring, or a complete attack scenario. The known condition is verifier handling of a nullable BPF struct_ops test parameter leading to possible NULL pointer dereference.

Researcher notes

Evidence is narrow: the CVE describes a verifier nullability annotation fix for bpf_dummy_struct_ops.test_1. It does not provide CVSS, CWE, exploitability requirements, privilege assumptions, or confirmed impact beyond possible NULL pointer dereference under certain conditions.

Mitigation direction

  • Check Linux vendor advisories for backported fixes affecting your deployed kernels.
  • Update to a kernel containing the referenced stable fixes where applicable.
  • Prioritize systems that allow local BPF program loading or kernel feature testing.
  • Track distribution-specific package names and fixed build numbers.

Validation and detection

  • Inventory Linux kernel versions across servers, containers hosts, and appliances.
  • Map deployed kernels to vendor advisories and referenced stable commits.
  • Confirm whether affected BPF struct_ops functionality is available or restricted.
  • Review kernel crash logs for unexplained NULL pointer dereference events.
Prepared
Confidence
medium
Sources
4

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-2024-42151 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
2ADP providers
3Source links

SSVC decision data

CISA-ADPCISA Coordinator
Timestamp
Version
2.0.3
Exploitation: noneAutomatable: noTechnical Impact: partial

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.

ADP provider summaries

CVECVE Program Container
CISA-ADPCISA ADP Vulnrichment
other:ssvc

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
LinuxLinux2cd3e3772e41377f32d6eea643e0590774e9187c, 2cd3e3772e41377f32d6eea643e0590774e9187cunaffected
LinuxLinux6.8, 0, 6.9.9, 6.10affected
Weakness

CWE details

No CWE listed

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