CVE-2026-98218 (GCVE-0-2026-98218)

Vulnerability from cvelistv5 – Published: 2026-10-06 08:44 – Updated: 2026-10-06 08:44
VLAI
Title
i2c: atr: fix dangling adapter pointer on add failure
Summary
In the Linux kernel, the following vulnerability has been resolved: i2c: atr: fix dangling adapter pointer on add failure i2c_atr_add_adapter() stores atr->adapter[chan_id] before i2c_add_adapter() so that the I2C bus notifier can match child clients during registration. On failure the channel is freed but the slot was left pointing at freed memory, which can lead to use-after-free in i2c_atr_del_adapter() / cleanup and also block reuse with -EEXIST. Clear the slot on the i2c_add_adapter() error path before freeing chan.
Severity
No CVSS data available.
Assigner
Linux CNA under the mitre root
CNA scorecard D 54/100 over 6633 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: a076a860acae77bbdcbd316541e5552e81fb1772 , < 2f5e42edbd232bf705dc5d3a91e06344237e63bb (git)
Affected: a076a860acae77bbdcbd316541e5552e81fb1772 , < 1093835f6aef58a831298d93e0d93f244fa07b84 (git)
Affected: a076a860acae77bbdcbd316541e5552e81fb1772 , < eabf7a3d33cd9fad106d267d00cc842434de8e02 (git)
Affected: a076a860acae77bbdcbd316541e5552e81fb1772 , < a57d9592714506556e30188af72dd3bdb9f647b5 (git)
Affected: a076a860acae77bbdcbd316541e5552e81fb1772 , < ad34235808b63a70ca4989b7a2852923193d06ef (git)
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Linux Linux Affected: 6.6
Unaffected: 0 , < 6.6 (semver)
Unaffected: 6.6.158 , ≤ 6.6.* (semver)
Unaffected: 6.12.112 , ≤ 6.12.* (semver)
Unaffected: 6.18.54 , ≤ 6.18.* (semver)
Unaffected: 7.2.8 , ≤ 7.2.* (semver)
Unaffected: 7.3-rc4 , ≤ * (original_commit_for_fix)
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{
  "containers": {
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          "product": "Linux",
          "programFiles": [
            "drivers/i2c/i2c-atr.c"
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    "dateReserved": "2026-09-25T10:25:14.326Z",
    "dateUpdated": "2026-10-06T08:44:54.034Z",
    "state": "PUBLISHED"
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      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-98218.json",
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    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.