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CVE Record

CVE-2024-36946: phonet: fix rtm_phonet_notify() skb allocation

In the Linux kernel, the following vulnerability has been resolved: phonet: fix rtm_phonet_notify() skb allocation fill_route() stores three components in the skb: - struct rtmsg - RTA_DST (u8) - RTA_OIF (u32) Therefore, rtm_phonet_notify() should use NLMSG_ALIGN(sizeof(struct rtmsg)) + nla_total_size(1) + nla_total_size(4)

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysisunknown

Security readout for executives and security teams

Plain-English summary

CVE-2024-36946 is a Linux kernel bug in the Phonet networking code. The public record says a route notification allocated too little buffer space for the data it stores. The available sources do not state impact, CVSS score, or active exploitation.

Executive priority

Treat as a patch-management item with uncertain severity. Prioritize vendor kernel updates, especially on internet-facing or multi-tenant Linux systems, but do not assume active exploitation from current sources.

Technical view

The fix changes rtm_phonet_notify() skb sizing to include aligned struct rtmsg plus netlink attributes RTA_DST and RTA_OIF. Sources list Linux kernel as affected and provide stable kernel commits. Impact and attacker requirements are not described in the provided record.

Likely exposure

Systems running affected Linux kernels with the Phonet code present are potentially exposed. Exposure is most relevant for Linux servers, appliances, and products that track upstream stable kernels. Confirm with distro or vendor advisories.

Exploitation context

No KEV listing is present, and the provided sources do not claim active exploitation. They also do not define whether exploitation is local, remote, or requires specific Phonet configuration.

Researcher notes

The record is sparse: no CWE, CVSS, exploitability statement, or impact class is provided. Analysis should focus on the referenced Phonet skb allocation fix and downstream vendor backports rather than assumptions about exploitability.

Mitigation direction

  • Apply kernel updates from your Linux distribution or appliance vendor.
  • For Debian LTS, review and apply the referenced June 2024 advisories.
  • For NetApp products, review the vendor advisory for product-specific status.
  • If self-maintaining kernels, include the relevant upstream stable fix.

Validation and detection

  • Inventory Linux kernel versions across servers, containers hosts, and appliances.
  • Compare versions against vendor advisories and upstream stable fixes.
  • Check kernel package changelogs for the CVE or referenced fix commits.
  • Prioritize systems where Phonet support is enabled or required.
Prepared
Confidence
medium
Sources
7

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-2024-36946 mapping review

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

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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
2ADP providers
12Source 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
LinuxLinuxf062f41d06575744b9eaf725eef8a5d3b5f5b7ca, f062f41d06575744b9eaf725eef8a5d3b5f5b7ca, f062f41d06575744b9eaf725eef8a5d3b5f5b7ca, f062f41d06575744b9eaf725eef8a5d3b5f5b7ca, f062f41d06575744b9eaf725eef8a5d3b5f5b7ca, f062f41d06575744b9eaf725eef8a5d3b5f5b7ca, f062f41d06575744b9eaf725eef8a5d3b5f5b7ca, f062f41d06575744b9eaf725eef8a5d3b5f5b7caunaffected
LinuxLinux2.6.33, 0, 4.19.314, 5.4.276, 5.10.217, 5.15.159, 6.1.91, 6.6.31, 6.8.10, 6.9affected
Weakness

CWE details

No CWE listed

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