Vulnerability-Lookup

FKIE_CVE-2026-23357

Vulnerability from fkie_nvd - Published: 2026-03-25 11:16 - Updated: 2026-04-24 19:04

Severity ?

5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

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.

References

URL	Tags
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/256f0cff6e946c570392bda1d01a65e789a7afd0	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/38063cc435b69d56e76f947c10d336fcb2953508	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/416c18ecddafab0ed09be1e7b9d2f448f3d4db16	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/739454057572cb0948658d1142f3fa2c6966465c	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/ab3f894de216f4a62adc3b57e9191888cbf26885	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/b73832292cd914e87a55e863ba4413a907e7db6b	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/d27f12c3f5e85efc479896af4a69eccb37f75e8e	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/e728f444c913a91d290d1824b4770780bbd6378e	Patch

Impacted products

Vendor	Product	Version
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	2.6.34
linux	linux_kernel	7.0
linux	linux_kernel	7.0
linux	linux_kernel	7.0
linux	linux_kernel	7.0
linux	linux_kernel	7.0
linux	linux_kernel	7.0
linux	linux_kernel	7.0

JSON

To clipboard

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      "value": "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."
    },
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      "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\ncan: mcp251x: corregir interbloqueo en la ruta de error de mcp251x_open\n\nLa funci\u00f3n mcp251x_open() llama a free_irq() en su ruta de error con el mutex mpc_lock retenido. Pero si ya ocurri\u00f3 una interrupci\u00f3n, el gestor de interrupciones estar\u00e1 esperando por el mpc_lock y free_irq() se interbloquear\u00e1 esperando a que el gestor termine.\n\nEste problema es similar al resuelto en el commit 7dd9c26bd6cf (\u0027can: mcp251x: corregir interbloqueo si ocurre una interrupci\u00f3n durante mcp251x_open\u0027) pero para la ruta de error.\n\nPara resolver este problema, mueva la llamada a free_irq() despu\u00e9s de que se libere el bloqueo. Establecer `priv-\u0026gt;force_quit = 1` de antemano asegura que el gestor IRQ saldr\u00e1 de inmediato una vez que haya adquirido el bloqueo."
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          "confidentialityImpact": "NONE",
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CVE-2026-23357 (GCVE-0-2026-23357)

Vulnerability from cvelistv5 – Published: 2026-03-25 10:27 – Updated: 2026-05-11 22:05

Title

can: mcp251x: fix deadlock in error path of mcp251x_open

Summary

Severity ?

No CVSS data available.

Assigner

Linux

References

8 references

URL	Tags
https://git.kernel.org/stable/c/739454057572cb094…
https://git.kernel.org/stable/c/416c18ecddafab0ed…
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

2 products

Vendor	Product	Version
Linux	Linux	Affected: bf66f3736a945dd4e92d86427276c6eeab0a6c1d , < 739454057572cb0948658d1142f3fa2c6966465c (git) Affected: bf66f3736a945dd4e92d86427276c6eeab0a6c1d , < 416c18ecddafab0ed09be1e7b9d2f448f3d4db16 (git) 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	Linux	Affected: 2.6.34 Unaffected: 0 , < 2.6.34 (semver) Unaffected: 5.10.253 , ≤ 5.10.* (semver) Unaffected: 5.15.203 , ≤ 5.15.* (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 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

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        }
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        },
        {
          "url": "https://git.kernel.org/stable/c/416c18ecddafab0ed09be1e7b9d2f448f3d4db16"
        },
        {
          "url": "https://git.kernel.org/stable/c/256f0cff6e946c570392bda1d01a65e789a7afd0"
        },
        {
          "url": "https://git.kernel.org/stable/c/b73832292cd914e87a55e863ba4413a907e7db6b"
        },
        {
          "url": "https://git.kernel.org/stable/c/38063cc435b69d56e76f947c10d336fcb2953508"
        },
        {
          "url": "https://git.kernel.org/stable/c/d27f12c3f5e85efc479896af4a69eccb37f75e8e"
        },
        {
          "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"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-23357",
    "datePublished": "2026-03-25T10:27:41.299Z",
    "dateReserved": "2026-01-13T15:37:46.000Z",
    "dateUpdated": "2026-05-11T22:05:18.120Z",
    "state": "PUBLISHED"
  },
  "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.

Action not permitted

FKIE_CVE-2026-23357

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

Tags

Sightings

Nomenclature