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CVE Record

CVE-2024-26855: net: ice: Fix potential NULL pointer dereference in ice_bridge_setlink()

In the Linux kernel, the following vulnerability has been resolved: net: ice: Fix potential NULL pointer dereference in ice_bridge_setlink() The function ice_bridge_setlink() may encounter a NULL pointer dereference if nlmsg_find_attr() returns NULL and br_spec is dereferenced subsequently in nla_for_each_nested(). To address this issue, add a check to ensure that br_spec is not NULL before proceeding with the nested attribute iteration.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysisunknown

Security readout for executives and security teams

Plain-English summary

This is a Linux kernel flaw in the ice network driver. A missing NULL check can cause the kernel to dereference an absent netlink attribute. The public record does not provide CVSS, confirmed exploitability, or business impact beyond the potential for a kernel crash or denial of service.

Executive priority

Handle through normal kernel patch management unless your environment depends heavily on affected Linux kernels and ice-based networking. Escalate if vendor advisories identify exposed products, operationally critical hosts, or broader impact.

Technical view

ice_bridge_setlink() calls nlmsg_find_attr() and could pass a NULL br_spec into nested attribute iteration. The fix adds a NULL check before nla_for_each_nested(). Affected Linux kernel versions are listed in the CVE data, with multiple stable kernel commits referenced as fixes.

Likely exposure

Exposure is most likely on Linux systems running affected kernel versions where the ice network driver is present or used. Downstream exposure depends on distribution or vendor kernel packaging, including Debian LTS and Siemens products referenced by the CVE sources.

Exploitation context

The provided sources do not report active exploitation, and the CVE is not in KEV. They also do not establish remote exploitability, required privileges, or reliable impact. Treat it as a kernel stability issue until vendor advisories provide more detail.

Researcher notes

Key uncertainty remains around triggerability and privilege boundary. The source evidence supports a missing NULL guard in a kernel driver path, but not exploit maturity, attack vector, or impact beyond potential NULL pointer dereference.

Mitigation direction

  • Apply distribution or vendor kernel updates containing the referenced stable fixes.
  • Track Debian LTS and Siemens advisories if those environments are in scope.
  • Prioritize affected kernels where the ice driver is enabled or deployed.
  • If updates are unavailable, follow vendor guidance; no workaround is named in sources.

Validation and detection

  • Inventory Linux kernel versions against the CVE affected version list.
  • Check whether the ice network driver is present, loaded, or packaged.
  • Confirm installed kernel packages include the referenced stable fix commits.
  • Review kernel logs for crashes involving ice_bridge_setlink or the ice driver.
Prepared
Confidence
medium
Sources
11

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-2024-26855 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
3ADP providers
10Source 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
siemens-SADPADP container

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
LinuxLinuxb1edc14a3fbfe0154a2aecb8bb9775c3012cb6e2, b1edc14a3fbfe0154a2aecb8bb9775c3012cb6e2, b1edc14a3fbfe0154a2aecb8bb9775c3012cb6e2, b1edc14a3fbfe0154a2aecb8bb9775c3012cb6e2, b1edc14a3fbfe0154a2aecb8bb9775c3012cb6e2, b1edc14a3fbfe0154a2aecb8bb9775c3012cb6e2, b1edc14a3fbfe0154a2aecb8bb9775c3012cb6e2unaffected
LinuxLinux4.20, 0, 5.4.272, 5.10.213, 5.15.152, 6.1.82, 6.6.22, 6.7.10, 6.8affected
Weakness

CWE details

No CWE listed

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