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um: Add winch to winch_handlers before registering winch IRQ

Type: advisorySource: Official CVE List1 source record

In the Linux kernel, the following vulnerability has been resolved: um: Add winch to winch_handlers before registering winch IRQ Registering a winch IRQ is racy, an interrupt may occur before the winch is added to the winch_handlers list. If that happens, register_winch_irq() adds to that list a winch that is scheduled to be (or has already been) freed, causing a panic later in winch_cleanup(). Avoid the race by adding the winch to the winch_handlers list before registering the IRQ, and rolling back if um_request_irq() fails.

Announced Source revision 1
Original source ↗

CVE-2024-39292

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-2024-39292

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": "42a359e31a0e438b5b978a8f0fecdbd3c86bb033",
        "lessThan": "66ea9a7c6824821476914bed21a476cd20094f33",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "42a359e31a0e438b5b978a8f0fecdbd3c86bb033",
        "lessThan": "dc1ff95602ee908fcd7d8acee7a0dadb61b1a0c0",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "42a359e31a0e438b5b978a8f0fecdbd3c86bb033",
        "lessThan": "351d1a64544944b44732f6a64ed65573b00b9e14",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "42a359e31a0e438b5b978a8f0fecdbd3c86bb033",
        "lessThan": "31960d991e43c8d6dc07245f19fc13398e90ead2",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "42a359e31a0e438b5b978a8f0fecdbd3c86bb033",
        "lessThan": "0c02d425a2fbe52643a5859a779db0329e7dddd4",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "42a359e31a0e438b5b978a8f0fecdbd3c86bb033",
        "lessThan": "434a06c38ee1217a8baa0dd7c37cc85d50138fb0",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "42a359e31a0e438b5b978a8f0fecdbd3c86bb033",
        "lessThan": "73b8e21f76c7dda4905655d2e2c17dc5a73b87f1",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "42a359e31a0e438b5b978a8f0fecdbd3c86bb033",
        "lessThan": "a0fbbd36c156b9f7b2276871d499c9943dfe5101",
        "versionType": "git"
      }
    ],
    "programFiles": [
      "arch/um/drivers/line.c"
    ],
    "defaultStatus": "unaffected"
  },
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "2.6.23"
      },
      {
        "status": "unaffected",
        "version": "0",
        "lessThan": "2.6.23",
        "versionType": "semver"
      },
      {
        "status": "unaffected",
        "version": "4.19.316",
        "versionType": "semver",
        "lessThanOrEqual": "4.19.*"
      },
      {
        "status": "unaffected",
        "version": "5.4.278",
        "versionType": "semver",
        "lessThanOrEqual": "5.4.*"
      },
      {
        "status": "unaffected",
        "version": "5.10.219",
        "versionType": "semver",
        "lessThanOrEqual": "5.10.*"
      },
      {
        "status": "unaffected",
        "version": "5.15.161",
        "versionType": "semver",
        "lessThanOrEqual": "5.15.*"
      },
      {
        "status": "unaffected",
        "version": "6.1.93",
        "versionType": "semver",
        "lessThanOrEqual": "6.1.*"
      },
      {
        "status": "unaffected",
        "version": "6.6.33",
        "versionType": "semver",
        "lessThanOrEqual": "6.6.*"
      },
      {
        "status": "unaffected",
        "version": "6.9.4",
        "versionType": "semver",
        "lessThanOrEqual": "6.9.*"
      },
      {
        "status": "unaffected",
        "version": "6.10",
        "versionType": "original_commit_for_fix",
        "lessThanOrEqual": "*"
      }
    ],
    "programFiles": [
      "arch/um/drivers/line.c"
    ],
    "defaultStatus": "affected"
  }
]
Related CVEs
CVE-2024-39292

Source reference: /cveMetadata/cveId

Publisher severity

high

Source reference: /containers/cna/metrics

Event
#26626 · Revision 1
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Publisher date
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