Vulnerability-Lookup

GHSA-9HPV-5PC5-WF9W

Vulnerability from github – Published: 2026-08-15 15:30 – Updated: 2026-08-19 18:32

Details

In the Linux kernel, the following vulnerability has been resolved:

i2c: imx: Cancel hrtimer before clearing slave pointer

In i2c_imx_unreg_slave(), the slave pointer is set to NULL after disabling interrupts. However, a pending interrupt might already have started the hrtimer (i2c_imx_slave_timeout) before the pointer was cleared. If the hrtimer fires after i2c_imx->slave is set to NULL, the timer callback i2c_imx_slave_finish_op() will call i2c_imx_slave_event() with a NULL slave pointer, which results in a use-after-free / NULL pointer dereference.

Fix by canceling the hrtimer and waiting for it to complete after disabling interrupts, before clearing the slave pointer.

Severity

8.4 (High)


                  
                    CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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{
  "affected": [],
  "aliases": [
    "CVE-2026-74461"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-08-15T13:17:50Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ni2c: imx: Cancel hrtimer before clearing slave pointer\n\nIn i2c_imx_unreg_slave(), the slave pointer is set to NULL after\ndisabling interrupts.  However, a pending interrupt might already\nhave started the hrtimer (i2c_imx_slave_timeout) before the pointer\nwas cleared.  If the hrtimer fires after i2c_imx-\u003eslave is set to\nNULL, the timer callback i2c_imx_slave_finish_op() will call\ni2c_imx_slave_event() with a NULL slave pointer, which results in a\nuse-after-free / NULL pointer dereference.\n\nFix by canceling the hrtimer and waiting for it to complete after\ndisabling interrupts, before clearing the slave pointer.",
  "id": "GHSA-9hpv-5pc5-wf9w",
  "modified": "2026-08-19T18:32:28Z",
  "published": "2026-08-15T15:30:33Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-74461"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/470fe15fb3bb2eba6629be301ca7e991ee3cfb7e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6ac7702b6cc2b94aaed9ef2d95bfbefcdc90061f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/753060f2b77ff2f386addbd3ecadb95b9f90cddd"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a8a1f9ac3d763e721586f15479ef9140b216ddf3"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/affd62f5719a78135b7441aa49c8cab3c3b5e838"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/dab4762ee7f3fd0a01980d5407ba48d0261d3bff"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e3da77bdb4015051656bb472c295656bbea03b6f"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2026-74461 (GCVE-0-2026-74461)

Vulnerability from cvelistv5 – Published: 2026-08-15 12:27 – Updated: 2026-08-19 16:37

Title

i2c: imx: Cancel hrtimer before clearing slave pointer

Summary

In the Linux kernel, the following vulnerability has been resolved: i2c: imx: Cancel hrtimer before clearing slave pointer In i2c_imx_unreg_slave(), the slave pointer is set to NULL after disabling interrupts. However, a pending interrupt might already have started the hrtimer (i2c_imx_slave_timeout) before the pointer was cleared. If the hrtimer fires after i2c_imx->slave is set to NULL, the timer callback i2c_imx_slave_finish_op() will call i2c_imx_slave_event() with a NULL slave pointer, which results in a use-after-free / NULL pointer dereference. Fix by canceling the hrtimer and waiting for it to complete after disabling interrupts, before clearing the slave pointer.

Severity

8.4 (High)


                        
                          CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Assigner

Linux mitre root

References

7 references

URL	Tags
https://git.kernel.org/stable/c/e3da77bdb40150516…
https://git.kernel.org/stable/c/470fe15fb3bb2eba6…
https://git.kernel.org/stable/c/a8a1f9ac3d763e721…
https://git.kernel.org/stable/c/753060f2b77ff2f38…
https://git.kernel.org/stable/c/affd62f5719a78135…
https://git.kernel.org/stable/c/dab4762ee7f3fd0a0…
https://git.kernel.org/stable/c/6ac7702b6cc2b94aa…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: f7414cd6923fd7f78e57086fc964ba2dc25db5c1 , < e3da77bdb4015051656bb472c295656bbea03b6f (git) Affected: f7414cd6923fd7f78e57086fc964ba2dc25db5c1 , < 470fe15fb3bb2eba6629be301ca7e991ee3cfb7e (git) Affected: f7414cd6923fd7f78e57086fc964ba2dc25db5c1 , < a8a1f9ac3d763e721586f15479ef9140b216ddf3 (git) Affected: f7414cd6923fd7f78e57086fc964ba2dc25db5c1 , < 753060f2b77ff2f386addbd3ecadb95b9f90cddd (git) Affected: f7414cd6923fd7f78e57086fc964ba2dc25db5c1 , < affd62f5719a78135b7441aa49c8cab3c3b5e838 (git) Affected: f7414cd6923fd7f78e57086fc964ba2dc25db5c1 , < dab4762ee7f3fd0a01980d5407ba48d0261d3bff (git) Affected: f7414cd6923fd7f78e57086fc964ba2dc25db5c1 , < 6ac7702b6cc2b94aaed9ef2d95bfbefcdc90061f (git)
Linux	Linux	Affected: 5.11 Unaffected: 0 , < 5.11 (semver) Unaffected: 5.15.216 , ≤ 5.15.* (semver) Unaffected: 6.1.183 , ≤ 6.1.* (semver) Unaffected: 6.6.151 , ≤ 6.6.* (semver) Unaffected: 6.12.103 , ≤ 6.12.* (semver) Unaffected: 6.18.44 , ≤ 6.18.* (semver) Unaffected: 7.1.8 , ≤ 7.1.* (semver) Unaffected: 7.2 , ≤ * (original_commit_for_fix)

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{
  "containers": {
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      "affected": [
        {
          "defaultStatus": "unaffected",
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          "programFiles": [
            "drivers/i2c/busses/i2c-imx.c"
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              "versionType": "semver"
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ni2c: imx: Cancel hrtimer before clearing slave pointer\n\nIn i2c_imx_unreg_slave(), the slave pointer is set to NULL after\ndisabling interrupts.  However, a pending interrupt might already\nhave started the hrtimer (i2c_imx_slave_timeout) before the pointer\nwas cleared.  If the hrtimer fires after i2c_imx-\u003eslave is set to\nNULL, the timer callback i2c_imx_slave_finish_op() will call\ni2c_imx_slave_event() with a NULL slave pointer, which results in a\nuse-after-free / NULL pointer dereference.\n\nFix by canceling the hrtimer and waiting for it to complete after\ndisabling interrupts, before clearing the slave pointer."
        }
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        },
        {
          "url": "https://git.kernel.org/stable/c/6ac7702b6cc2b94aaed9ef2d95bfbefcdc90061f"
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      "title": "i2c: imx: Cancel hrtimer before clearing slave pointer",
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-74461",
    "datePublished": "2026-08-15T12:27:01.924Z",
    "dateReserved": "2026-08-15T05:44:03.901Z",
    "dateUpdated": "2026-08-19T16:37:00.344Z",
    "state": "PUBLISHED"
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  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

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.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.

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GHSA-9HPV-5PC5-WF9W

CVE-2026-74461 (GCVE-0-2026-74461)

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Sightings

Nomenclature