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CVE Record

CVE-2022-48787: iwlwifi: fix use-after-free

In the Linux kernel, the following vulnerability has been resolved: iwlwifi: fix use-after-free If no firmware was present at all (or, presumably, all of the firmware files failed to parse), we end up unbinding by calling device_release_driver(), which calls remove(), which then in iwlwifi calls iwl_drv_stop(), freeing the 'drv' struct. However the new code I added will still erroneously access it after it was freed. Set 'failure=false' in this case to avoid the access, all data was already freed anyway.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysisunknown

Security readout for executives and security teams

Plain-English summary

CVE-2022-48787 is a Linux kernel iwlwifi driver use-after-free. In a specific failure path where firmware is absent or cannot be parsed, the driver can free internal state and then access it again. The bundle provides no CVSS score, no CWE, and no active exploitation evidence.

Executive priority

Treat as a targeted kernel maintenance item unless vendor scoring changes. Prioritize laptop or endpoint fleets that use iwlwifi, but do not escalate as actively exploited based on this bundle.

Technical view

The issue is in Linux kernel iwlwifi error handling. During unbind, device_release_driver() can call remove(), then iwl_drv_stop() frees the drv structure. Recently added code could still access drv afterward. The kernel fix sets failure=false in this no-firmware path because related data was already freed.

Likely exposure

Exposure appears limited to Linux systems using the iwlwifi driver and hitting the no-firmware or firmware-parse-failure path. The source bundle lists Linux kernel commit and stable-version references but no CPEs or distribution-specific package status.

Exploitation context

The CVE is not marked KEV, and the provided sources do not report exploitation. The described trigger depends on driver error handling when firmware is missing or fails to parse. No remote attack path is stated in the bundle.

Researcher notes

Evidence is sparse: no CVSS, CWE, CPE, exploit report, or distribution matrix is included. The key technical signal is a use-after-free in a firmware failure cleanup path fixed across multiple kernel stable commits.

Mitigation direction

  • Check your Linux distribution advisory for CVE-2022-48787 package status.
  • Apply kernel updates containing the referenced stable iwlwifi fixes.
  • Prioritize systems that load the iwlwifi driver.
  • Ensure required iwlwifi firmware files are present and vendor-supported.

Validation and detection

  • Inventory Linux kernel versions and distribution package revisions.
  • Identify systems where the iwlwifi driver is loaded or available.
  • Compare installed kernels against vendor advisories and referenced stable commits.
  • Review boot or kernel logs for iwlwifi firmware load or parse failures.
Prepared
Confidence
medium
Sources
9

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

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CVE-2022-48787 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
8Source 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
LinuxLinux8e10749fa1a454c1e7214f36cec83241f5a36ef1, 1d7cc54137a4f28506dc7beac235b240b08f4e59, 0446cafa843e6db4982731c167e11c80d42be7e2, febab6b60d61d13cd9f30a2991deea56df39567d, e23f075d77987de4215c8e0696f28bcc707506f7, 6b5ad4bd0d78fef6bbe0ecdf96e09237c9c52cc1, ab07506b0454bea606095951e19e72c282bfbb42unaffected
LinuxLinux4.14.263, 4.19.226, 5.4.174, 5.10.94, 5.15.17, 5.16.3unaffected
Weakness

CWE details

No CWE listed

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