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can: mcp251x: fix deadlock in error path of mcp251x_open

Type: advisorySource: Official CVE List1 source record

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.

Announced Source revision 1
Original source ↗

CVE-2026-23357

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: cve:CVE-2026-23357

Linux

Source reference: /containers/cna/affected/0/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Linux

Source reference: /containers/cna/affected/1/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "bf66f3736a945dd4e92d86427276c6eeab0a6c1d",
        "lessThan": "739454057572cb0948658d1142f3fa2c6966465c",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "bf66f3736a945dd4e92d86427276c6eeab0a6c1d",
        "lessThan": "416c18ecddafab0ed09be1e7b9d2f448f3d4db16",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "bf66f3736a945dd4e92d86427276c6eeab0a6c1d",
        "lessThan": "256f0cff6e946c570392bda1d01a65e789a7afd0",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "bf66f3736a945dd4e92d86427276c6eeab0a6c1d",
        "lessThan": "b73832292cd914e87a55e863ba4413a907e7db6b",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "bf66f3736a945dd4e92d86427276c6eeab0a6c1d",
        "lessThan": "38063cc435b69d56e76f947c10d336fcb2953508",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "bf66f3736a945dd4e92d86427276c6eeab0a6c1d",
        "lessThan": "d27f12c3f5e85efc479896af4a69eccb37f75e8e",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "bf66f3736a945dd4e92d86427276c6eeab0a6c1d",
        "lessThan": "e728f444c913a91d290d1824b4770780bbd6378e",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "bf66f3736a945dd4e92d86427276c6eeab0a6c1d",
        "lessThan": "ab3f894de216f4a62adc3b57e9191888cbf26885",
        "versionType": "git"
      }
    ],
    "programFiles": [
      "drivers/net/can/spi/mcp251x.c"
    ],
    "defaultStatus": "unaffected"
  },
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "2.6.34"
      },
      {
        "status": "unaffected",
        "version": "0",
        "lessThan": "2.6.34",
        "versionType": "semver"
      },
      {
        "status": "unaffected",
        "version": "5.10.253",
        "versionType": "semver",
        "lessThanOrEqual": "5.10.*"
      },
      {
        "status": "unaffected",
        "version": "5.15.203",
        "versionType": "semver",
        "lessThanOrEqual": "5.15.*"
      },
      {
        "status": "unaffected",
        "version": "6.1.167",
        "versionType": "semver",
        "lessThanOrEqual": "6.1.*"
      },
      {
        "status": "unaffected",
        "version": "6.6.130",
        "versionType": "semver",
        "lessThanOrEqual": "6.6.*"
      },
      {
        "status": "unaffected",
        "version": "6.12.77",
        "versionType": "semver",
        "lessThanOrEqual": "6.12.*"
      },
      {
        "status": "unaffected",
        "version": "6.18.17",
        "versionType": "semver",
        "lessThanOrEqual": "6.18.*"
      },
      {
        "status": "unaffected",
        "version": "6.19.7",
        "versionType": "semver",
        "lessThanOrEqual": "6.19.*"
      },
      {
        "status": "unaffected",
        "version": "7.0",
        "versionType": "original_commit_for_fix",
        "lessThanOrEqual": "*"
      }
    ],
    "programFiles": [
      "drivers/net/can/spi/mcp251x.c"
    ],
    "defaultStatus": "affected"
  }
]
Related CVEs
CVE-2026-23357

Source reference: /cveMetadata/cveId

Publisher severity

No explicit severity was provided.

Event
#27232 · Revision 1
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Publisher date
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