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CVE Record

CVE-2024-27417: ipv6: fix potential "struct net" leak in inet6_rtm_getaddr()

In the Linux kernel, the following vulnerability has been resolved: ipv6: fix potential "struct net" leak in inet6_rtm_getaddr() It seems that if userspace provides a correct IFA_TARGET_NETNSID value but no IFA_ADDRESS and IFA_LOCAL attributes, inet6_rtm_getaddr() returns -EINVAL with an elevated "struct net" refcount.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysisunknown

Security readout for executives and security teams

Plain-English summary

CVE-2024-27417 is a Linux kernel IPv6 bug where a malformed address lookup request can leave a network namespace reference unreleased. The public record describes a resource leak, not code execution. Business urgency depends on kernel exposure and whether untrusted local workloads can interact with affected networking interfaces.

Executive priority

Treat as a routine kernel maintenance item unless affected systems run untrusted local code or shared workloads. There is no source-backed active exploitation signal, but resource leaks in kernel namespace handling merit timely patching through normal Linux update channels.

Technical view

The bug is in inet6_rtm_getaddr(). If userspace provides a valid IFA_TARGET_NETNSID but omits IFA_ADDRESS and IFA_LOCAL, the function returns -EINVAL while retaining an elevated struct net refcount. The CVE lists Linux kernel versions as affected and references multiple stable kernel commits resolving the issue.

Likely exposure

Exposure is limited to Linux systems running affected kernel builds. The source indicates userspace-triggered IPv6 netlink behavior; it does not establish remote network exploitation. Kernel version, distribution backports, and namespace usage determine practical exposure.

Exploitation context

CISA KEV is false in the provided bundle, and no cited source claims active exploitation. The available evidence describes the vulnerable condition and fixes, but not observed attacks, exploit maturity, or attacker prerequisites beyond userspace interaction.

Researcher notes

Focus analysis on IPv6 rtnetlink address lookup paths and struct net reference handling. The public bundle does not provide CVSS, CWE, exploit status, or detailed impact beyond a potential refcount leak, so severity should remain conservative.

Mitigation direction

  • Inventory Linux kernel versions across affected fleets.
  • Apply vendor or distribution kernel updates containing the referenced stable fixes.
  • Review Debian LTS advisory DLA-3823-1 where applicable.
  • Check vendor guidance for backported fixes before judging by version alone.
  • Prioritize multi-user systems running untrusted local workloads.

Validation and detection

  • Confirm the running kernel version and distribution package release.
  • Map installed kernels against vendor advisories and referenced stable commits.
  • Verify updated hosts booted into the remediated kernel.
  • Track exceptions where kernel updates require maintenance windows.
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-2024-27417 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
2ADP providers
9Source 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

CISA-ADPCISA ADP Vulnrichment
other:ssvc
CVECVE Program Container

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
LinuxLinux6ecf4c37eb3e89b0832c9616089a5cdca3747da7, 6ecf4c37eb3e89b0832c9616089a5cdca3747da7, 6ecf4c37eb3e89b0832c9616089a5cdca3747da7, 6ecf4c37eb3e89b0832c9616089a5cdca3747da7, 6ecf4c37eb3e89b0832c9616089a5cdca3747da7, 6ecf4c37eb3e89b0832c9616089a5cdca3747da7, 6ecf4c37eb3e89b0832c9616089a5cdca3747da7unaffected
LinuxLinux4.20, 0, 5.4.271, 5.10.212, 5.15.151, 6.1.81, 6.6.21, 6.7.9, 6.8affected
Weakness

CWE details

No CWE listed

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