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CVE Record

CVE-2024-53099: bpf: Check validity of link->type in bpf_link_show_fdinfo()

In the Linux kernel, the following vulnerability has been resolved: bpf: Check validity of link->type in bpf_link_show_fdinfo() If a newly-added link type doesn't invoke BPF_LINK_TYPE(), accessing bpf_link_type_strs[link->type] may result in an out-of-bounds access. To spot such missed invocations early in the future, checking the validity of link->type in bpf_link_show_fdinfo() and emitting a warning when such invocations are missed.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysisunknown

Security readout for executives and security teams

Plain-English summary

CVE-2024-53099 is a Linux kernel BPF bug where reporting information about a BPF link can index outside an internal type-name table. The sources do not provide CVSS scoring, impact detail, or evidence of active exploitation. Treat it as a kernel maintenance issue requiring affected-version checks and vendor kernel updates.

Executive priority

Handle through normal kernel patch governance unless vendor guidance raises severity. Prioritize internet-facing, multi-tenant, container-hosting, and security-sensitive Linux systems because kernel bugs can have broad operational impact even when exploitability is unclear.

Technical view

The flaw is in bpf_link_show_fdinfo(). If a newly added link type does not invoke BPF_LINK_TYPE(), bpf_link_type_strs[link->type] may be accessed out of bounds. The fix adds validity checking for link->type and warns when future link types miss the required registration path.

Likely exposure

Exposure is limited to Linux systems running affected kernel versions or distro kernels that include the vulnerable BPF code. The bundle lists Linux kernel versions including 5.7, 5.10.233, 5.15.176, 6.1.123, 6.6.62, 6.11.9, and 6.12; verify exact vendor backport status.

Exploitation context

The source bundle does not cite KEV listing, active exploitation, public exploit availability, or a practical attack path. The described trigger involves BPF link fdinfo handling, but the provided sources do not establish remote exploitability or privilege impact.

Researcher notes

Evidence is incomplete for severity, CWE, CVSS, and exploitability. The core issue is an out-of-bounds table access caused by missing BPF link type registration. Focus validation on kernel commit presence, distro backports, and whether BPF-heavy workloads increase reachability.

Mitigation direction

  • Update affected Linux kernels using vendor or distribution security guidance.
  • Review the referenced stable kernel commits for applicable fixed branches.
  • Apply Debian LTS kernel updates where those advisories match deployed systems.
  • Track vendor advisories for backported fixes and package-specific version mapping.

Validation and detection

  • Inventory kernel versions across servers, containers, and appliances.
  • Compare deployed kernels with vendor CVE advisories and stable branch fixes.
  • Confirm the running kernel includes the bpf_link_show_fdinfo() type validation fix.
  • Document exceptions where vendor status remains unclear or unsupported.
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

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CVE-2024-53099 mapping review

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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
1ADP 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.

ADP provider summaries

CVECVE Program Container

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
LinuxLinux70ed506c3bbcfa846d4636b23051ca79fa4781f7, 70ed506c3bbcfa846d4636b23051ca79fa4781f7, 70ed506c3bbcfa846d4636b23051ca79fa4781f7, 70ed506c3bbcfa846d4636b23051ca79fa4781f7, 70ed506c3bbcfa846d4636b23051ca79fa4781f7, 70ed506c3bbcfa846d4636b23051ca79fa4781f7unaffected
LinuxLinux5.7, 0, 5.10.233, 5.15.176, 6.1.123, 6.6.62, 6.11.9, 6.12affected
Weakness

CWE details

No CWE listed

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