Vulnerability-Lookup

GHSA-F94P-FCWW-CPFJ

Vulnerability from github – Published: 2026-03-25 12:30 – Updated: 2026-03-25 12:30

Details

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

can: mcp251x: fix deadlock in error path of mcp251x_open

The mcp251x_open() function call free_irq() in its error path with the mpc_lock mutex held. But if an interrupt already occurred the interrupt handler will be waiting for the mpc_lock and free_irq() will deadlock waiting for the handler to finish.

This issue is similar to the one fixed in commit 7dd9c26bd6cf ("can: mcp251x: fix deadlock if an interrupt occurs during mcp251x_open") but for the error path.

To solve this issue move the call to free_irq() after the lock is released. Setting priv->force_quit = 1 beforehand ensure that the IRQ handler will exit right away once it acquired the lock.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-23357"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-03-25T11:16:34Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ncan: mcp251x: fix deadlock in error path of mcp251x_open\n\nThe mcp251x_open() function call free_irq() in its error path with the\nmpc_lock mutex held. But if an interrupt already occurred the\ninterrupt handler will be waiting for the mpc_lock and free_irq() will\ndeadlock waiting for the handler to finish.\n\nThis issue is similar to the one fixed in commit 7dd9c26bd6cf (\"can:\nmcp251x: fix deadlock if an interrupt occurs during mcp251x_open\") but\nfor the error path.\n\nTo solve this issue move the call to free_irq() after the lock is\nreleased. Setting `priv-\u003eforce_quit = 1` beforehand ensure that the IRQ\nhandler will exit right away once it acquired the lock.",
  "id": "GHSA-f94p-fcww-cpfj",
  "modified": "2026-03-25T12:30:23Z",
  "published": "2026-03-25T12:30:23Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-23357"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/256f0cff6e946c570392bda1d01a65e789a7afd0"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/38063cc435b69d56e76f947c10d336fcb2953508"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ab3f894de216f4a62adc3b57e9191888cbf26885"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b73832292cd914e87a55e863ba4413a907e7db6b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d27f12c3f5e85efc479896af4a69eccb37f75e8e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e728f444c913a91d290d1824b4770780bbd6378e"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-23357 (GCVE-0-2026-23357)

Vulnerability from cvelistv5 – Published: 2026-03-25 10:27 – Updated: 2026-03-25 10:27

Title

can: mcp251x: fix deadlock in error path of mcp251x_open

Summary

In the Linux kernel, the following vulnerability has been resolved: can: mcp251x: fix deadlock in error path of mcp251x_open The mcp251x_open() function call free_irq() in its error path with the mpc_lock mutex held. But if an interrupt already occurred the interrupt handler will be waiting for the mpc_lock and free_irq() will deadlock waiting for the handler to finish. This issue is similar to the one fixed in commit 7dd9c26bd6cf ("can: mcp251x: fix deadlock if an interrupt occurs during mcp251x_open") but for the error path. To solve this issue move the call to free_irq() after the lock is released. Setting `priv->force_quit = 1` beforehand ensure that the IRQ handler will exit right away once it acquired the lock.

Severity ?

No CVSS data available.

Assigner

Linux

References

URL

Tags

	https://git.kernel.org/stable/c/256f0cff6e946c570…
	https://git.kernel.org/stable/c/b73832292cd914e87…
	https://git.kernel.org/stable/c/38063cc435b69d56e…
	https://git.kernel.org/stable/c/d27f12c3f5e85efc4…
	https://git.kernel.org/stable/c/e728f444c913a91d2…
	https://git.kernel.org/stable/c/ab3f894de216f4a62…

Impacted products

Vendor

Product

Version

Linux

Affected: bf66f3736a945dd4e92d86427276c6eeab0a6c1d , < 256f0cff6e946c570392bda1d01a65e789a7afd0 (git)
Affected: bf66f3736a945dd4e92d86427276c6eeab0a6c1d , < b73832292cd914e87a55e863ba4413a907e7db6b (git)
Affected: bf66f3736a945dd4e92d86427276c6eeab0a6c1d , < 38063cc435b69d56e76f947c10d336fcb2953508 (git)
Affected: bf66f3736a945dd4e92d86427276c6eeab0a6c1d , < d27f12c3f5e85efc479896af4a69eccb37f75e8e (git)
Affected: bf66f3736a945dd4e92d86427276c6eeab0a6c1d , < e728f444c913a91d290d1824b4770780bbd6378e (git)
Affected: bf66f3736a945dd4e92d86427276c6eeab0a6c1d , < ab3f894de216f4a62adc3b57e9191888cbf26885 (git)

Linux

Affected: 2.6.34
Unaffected: 0 , < 2.6.34 (semver)
Unaffected: 6.1.167 , ≤ 6.1.* (semver)
Unaffected: 6.6.130 , ≤ 6.6.* (semver)
Unaffected: 6.12.77 , ≤ 6.12.* (semver)
Unaffected: 6.18.17 , ≤ 6.18.* (semver)
Unaffected: 6.19.7 , ≤ 6.19.* (semver)
Unaffected: 7.0-rc3 , ≤ * (original_commit_for_fix)

Show details on NVD website

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{
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      "affected": [
        {
          "defaultStatus": "unaffected",
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          "programFiles": [
            "drivers/net/can/spi/mcp251x.c"
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              "status": "affected",
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              "versionType": "git"
            }
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          ],
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              "status": "affected",
              "version": "2.6.34"
            },
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              "lessThan": "2.6.34",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
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              "status": "unaffected",
              "version": "6.1.167",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.130",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.77",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.17",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.19.*",
              "status": "unaffected",
              "version": "6.19.7",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.0-rc3",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.167",
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                },
                {
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                {
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                {
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                {
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        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-03-25T10:27:41.299Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/256f0cff6e946c570392bda1d01a65e789a7afd0"
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        {
          "url": "https://git.kernel.org/stable/c/b73832292cd914e87a55e863ba4413a907e7db6b"
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          "url": "https://git.kernel.org/stable/c/d27f12c3f5e85efc479896af4a69eccb37f75e8e"
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        {
          "url": "https://git.kernel.org/stable/c/e728f444c913a91d290d1824b4770780bbd6378e"
        },
        {
          "url": "https://git.kernel.org/stable/c/ab3f894de216f4a62adc3b57e9191888cbf26885"
        }
      ],
      "title": "can: mcp251x: fix deadlock in error path of mcp251x_open",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
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  "cveMetadata": {
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-23357",
    "datePublished": "2026-03-25T10:27:41.299Z",
    "dateReserved": "2026-01-13T15:37:46.000Z",
    "dateUpdated": "2026-03-25T10:27:41.299Z",
    "state": "PUBLISHED"
  },
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}

Sightings

Author	Source	Type	Date

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.

Action not permitted

GHSA-F94P-FCWW-CPFJ

CVE-2026-23357 (GCVE-0-2026-23357)

Tags

Sightings

Nomenclature